AVForums South Africa

Audio/Video Hardware => Computers & Networking => Topic started by: xrapidx on November 09, 2016, 08:24:24 AM

Title: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on November 09, 2016, 08:24:24 AM
Thought this could be a Q&A thread relating to the use and installation of these boards:
(http://img.photobucket.com/albums/v287/tangmonster/IMG_20161031_212613.jpg)

Ref:
Sale thread: http://www.avforums.co.za/index.php/topic,58271.0.html
&
Initial thread: http://www.avforums.co.za/index.php/topic,44460.0.html
&
Sale: http://tangtechnologies.spaza.co/
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: Heinrich on November 09, 2016, 09:02:15 AM
1st round of questions:

would i be able to add level limit switches and only have the system come on when the water level is enough without having to connect it to the rain sensor input?


is it possible to adjust the time each zone will be on measures against water level?

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 09, 2016, 09:07:06 AM
Thanks , yes this makes sense

Hi All


The basics of powering show very good in the below picture:

NO 5v is needed for PI. IN fact i didn't put in protection so don't plug in usb power and AC power, something will blow up.

ONLY 24V AC.

The onboard circuit regulates the 24Vac to 5V dc to power the pi Directly from the Header.
The Pi then has in onboard 3.3V regulator.

This regulator is used to power other circuits like the DS1307 RTC etc.

You cannot power the board with DC, At least the pi should work but the TRIACS can only switch AC which 99% of all solenoids use. You do get DC latching solenoids but that is a very speciality item that needs a whole different circuit.

(http://img.photobucket.com/albums/v287/tangmonster/connections.jpg)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 09, 2016, 09:45:53 AM
1st round of questions:

would i be able to add level limit switches and only have the system come on when the water level is enough without having to connect it to the rain sensor input?

is it possible to adjust the time each zone will be on measures against water level?


At this stage I don't know of any way to do that on a zone specific way.

The Weatherunderground input that uses temp , humidity and wind etc to decide on watering percentage is the best they have.




Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on November 09, 2016, 09:55:54 AM
Looks like I've already been saved from blowing things up...

My 4th Valve has started randomly tripping the power - so this has become a priority... you can see how the valves are wired behind the relay  :facepalm:
(http://i67.tinypic.com/2itfmgj.jpg)

Some general questions from my side
1.) Where would I be able to get a 24v transformer? I don't want to take the one from the Hunter unit if it requires disassembling (I'd prefer to sell it). I currently have a "bare" power cable coming in from the house, so it should be easy enough to connect something to it.

2.) Where can I get the single cable with multiple strands for the valves? (not sure what the cable is called)

I need to try and make sure I have everything upfront - my garden dies in a day or two without water, once I start, I don't want to get stuck.







Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 09, 2016, 10:35:06 AM


I;'d like to make small updates to this picture for in case someone wants to run Lights or pool pump of channels. You MUST use A AC relay for this.

The latest firmware has provision so you can set up a button conencted to the RAIN input, if this button is pressed for 2 seconds , program 1 will run.
Good for in case you have a gardner you only want to give water from the tap 1 hour at a time or run only your master pump for a specific time or simple program.

(http://img.photobucket.com/albums/v287/tangmonster/connections_1.jpg)


Sources for parts ( there are MANY places but these are the parts i used):

24V ac transformer ( 20VA normally , 30VA advised for pi3):

ACDC R219 according to their website:
T-20VA 230/24
http://www.acdc.co.za/getPage.php?page=77

Yebo: R265
http://www.fort777.co.za/index.php?main_page=product_info&cPath=269_456_676_678_1150&products_id=3752


RS: R236 (short out two middel terminalks for 24Vac
http://za.rs-online.com/web/p/chassis-mounting-transformers/0504280/



For Cabling I used Cat 5 , cheap and easy. Running underground inside black pipe.



Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 09, 2016, 10:41:35 AM
another transformer option

communica:

http://www.communica.co.za/Catalog/Details/P0403570658

cheapest best option i could find so far:

R150

http://www.communica.co.za/Catalog/Details/P1220414792
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on November 09, 2016, 10:42:41 AM
didn't think of network cable...  :Ooooooh: I have 100m of CAT6 lying around.

Can you recommend a product for "joining" cables neatly? As you can see, who-ever did my current installation did crude cable joins, most without insultation.

I'd like to do this all as neat as possible.

If I understand everything correctly - it'll work as follows:
1.) 220v into 24v transformer into opensprinkler board.
2.) Opensprinkler board connected to pi.
3.) Valves connected to Opensprinkler board.

In my case.
4.) 220v into Relay
5.) Relay into pump
6.) Opensprinkler board into Relay (I'll figure/ask when I get this far)

*side note - I need to do a basic electric course (for dummies)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: johanhp on November 09, 2016, 10:49:42 AM
I bought the same transformer that Yebo sells for R170 at FG Electronics in Pretoria.

another transformer option

communica:

http://www.communica.co.za/Catalog/Details/P0403570658

cheapest best option i could find so far:

R150

http://www.communica.co.za/Catalog/Details/P1220414792
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on November 09, 2016, 02:18:48 PM
Another question from me :)

What is the board that everything is mounted on called in this picture?
(http://images.tapatalk-cdn.com/15/09/01/a0a491799d28f4edbc775c3db529ad65.jpg)

I'd like to use something similiar.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 09, 2016, 02:23:03 PM
Another question from me :)

What is the board that everything is mounted on called in this picture?
(http://images.tapatalk-cdn.com/15/09/01/a0a491799d28f4edbc775c3db529ad65.jpg)

I'd like to use something similiar.

People call it different things , but I call it a back plate.

If you current box is too small electromechanica in koeberg Weg has a CRAZY amount of options.

obviously ACDC also.

Here is electromechanica's catalogue

http://www.em.co.za/Ebook/index.html



Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 09, 2016, 02:28:19 PM

If I understand everything correctly - it'll work as follows:
1.) 220v into 24v transformer into opensprinkler board.
2.) Opensprinkler board connected to pi.
3.) Valves connected to Opensprinkler board.

In my case.
4.) 220v into Relay
5.) Relay into pump
6.) Opensprinkler board into Relay (I'll figure/ask when I get this far)

*side note - I need to do a basic electric course (for dummies)

You got it.

For my pump for example i use Channel 1 connected to the relay.

I set Channel 1 in the Options as my "MASTER" channel.

So for all other channels I will set if it needs master also running or not.

Like me you will too since you need to run channel 1 with all other channels.

Except where a channel is used for pool pump or light or whatever.

A channel can also be set up as Sequential or not.

All solenoid  irrigation channels will be set to default Sequential since you dont' want to open 2 at teh same time.

Other channels connected to other ligths etc will NOT be set to sequencial since they must be able to work at any time with any other channel.


Fyi

Once you have your condif done you can export your confog to an XML file on your local pc. this is VERY important so you don't have to redo things.
And sometimes I have found when i give the command to do the firmware update directly from the android app i lost my settings.
Luckily it is a quick load of the xml file and all is good again.



Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on November 09, 2016, 02:31:39 PM
Thanks - I appreciate the feedback (and patience).

I'll probably only be running the sprinklers for now, I'll hopefully add outdoor lighting once I get round to install it.

It would be great to have the pool pump and light on the same system, but they're on the other side of the property, and not possible to run a cable (concrete pathways).
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 09, 2016, 03:12:01 PM
Thanks - I appreciate the feedback (and patience).

I'll probably only be running the sprinklers for now, I'll hopefully add outdoor lighting once I get round to install it.

It would be great to have the pool pump and light on the same system, but they're on the other side of the property, and not possible to run a cable (concrete pathways).

on the top of the board there is a header with 12V supply designed so that you can connect a RF transmitter.
You can also assign a transmitter Code to a channel so that you can technically can have remote relays triggered from RF.

Electromechanica

http://www.em.co.za/Ebook/index.html

page 180

686.207  190 x 140 x 70  R115
is a nice box

654.0787 chassis plate is a steel plate so you'll have to drill holes is R56.

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on November 09, 2016, 03:24:45 PM
Awesome, going to make this my project for next week Friday, so I'll build up a shopping list of the necessaries.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: johanhp on November 09, 2016, 10:48:55 PM
My RPi B ver 1.0 is working fine. Did not have to many issues to get it up and running.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on November 21, 2016, 11:14:20 AM
Which Pi is required for this? I see the one(s) I have doesn't fit...
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 21, 2016, 11:40:44 AM
Which Pi is required for this? I see the one(s) I have doesn't fit...

Which one do you have?

All raspberry pi's should work as confirmed by johanp

the one with NO mounting holes will work but very hard to mount seeing as it doesn't have any mounting holes. Best way will be to use ribbon cable and put it in second enclosure.

then there is the rev B:

This will also work , but i did not make provision on the pcb for the moutning hole. You should be able to drill a hole in the pcb and use a standoff in the middle. Just double check if there arent any track underneath the board before drilling but it should be just fine. You will only be able to use 1 hole. In the below picture it is the one closest to the HDMI connector.

(http://www.vesalia.de/pic/raspberrypirev2.jpg)

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on November 21, 2016, 11:46:32 AM
That's the one I have, as pictured.

I don't mind ordering another one, but just want to make sure I order the right one for easiest "plug and play".
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 21, 2016, 11:50:21 AM
One hole drilled in the board you should be able to use your rev B.

Personally I use a A+ with usb wifi plugin:

https://www.pishop.co.za/store/raspberry-pi-boards/raspberry-pi-model-a

Raspberry pi's however have  2.9mm mounting holes.

It is hard to screw in the m3 screws.

Personally I used a 3mm drill bit and reamed the mounting holes in the raspberry pi by hand.Might be easy enough to screw m3 screw without reaming.

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on November 21, 2016, 11:53:03 AM
Thanks, the pin layout in the B also looks different... (less) - haven't spent too much time with it, just noticed yesterday.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on November 21, 2016, 12:09:28 PM
Thanks, the pin layout in the B also looks different... (less) - haven't spent too much time with it, just noticed yesterday.


yes, but only use a few of the first lot of pins. no issues with pcb

i even opted to only populate a 2 x 10 way connector instead of full length.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 13, 2017, 08:53:13 AM
24V ac transformer ( 20VA normally , 30VA advised for pi3):

ACDC R219 according to their website:
T-20VA 230/24
http://www.acdc.co.za/getPage.php?page=77

Yebo: R265
http://www.fort777.co.za/index.php?main_page=product_info&cPath=269_456_676_678_1150&products_id=3752


RS: R236 (short out two middel terminalks for 24Vac
http://za.rs-online.com/web/p/chassis-mounting-transformers/0504280/



For Cabling I used Cat 5 , cheap and easy. Running underground inside black pipe.

About to go shopping - I'm using a Pi3 - so 30Vac? (just want to make sure I don't blow the board somehow)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on January 13, 2017, 08:58:23 AM
no use 24Vac , don't go higher voltage

The suggested transformer itself must be 30VA , but that depends on how many relays and solinoids you are going to power at the same time.

The Yebo one at 24VA will probably be ok.


the VA and V ac might be getting a bit confusing.

You want to make sure to get a transformer that supplies 24Volt AC. At around 1 amp or more fro the transformer to last.



Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 13, 2017, 09:00:52 AM
no use 24Vac , don't go higher voltage

The suggested transformer itself must be 30VA , but that depends on how many relays and solinoids you are going to power at the same time.

The Yebo one at 24VA will probably be ok.

Good thing I asked then.

Probably won't be more than three at a time. (e.g. pump, single garden zone, and maybe lights if its at night)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 13, 2017, 09:02:48 AM
Just checked the Zest one - is the output current of 1A enough ?
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on January 13, 2017, 09:05:18 AM
Good thing I asked then.

Probably won't be more than three at a time. (e.g. pump, single garden zone, and maybe lights if its at night)

it looks like yebo has no stock.

Give ACDC a ring in paarden eiland for their 30VA.

I would spend the extra R50 and get their 30VA:

T-30VA 230/24   1 PH TRANSFORMER 230:24V      R277.00


They have 9 in stock according to their website in cape town.

Crude calculations with headroom:

1 amp 24V rating should be just fine. the sprinkler solinoids draw around 200mA each.

a single Ac relay  will be less than 100mA , but lets make it 100mA for headroom/

So with 2 relays ( light / wellpoint pump)  and a solinoid you have 400mA = 9.6W ( crude 0.4 x 24V)

raspberry pi 3 is rounded up with headroom wifi enabled  500mA on 5V so that is 2.5W. (enough headroom to take into account for the regulator effeciency)

2.5W +   9.6W = 12.1 Watt.

you will most probably be fine with 20VA... But you are driving around and getting parts so go for the 30VA at acdc




Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 13, 2017, 09:06:56 AM
Thanks - heading to Paarden Eiland today anyway for various odds and ends.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on January 24, 2017, 10:52:38 AM
Did you come right with the transformer? Any pics of install?
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 24, 2017, 11:06:29 AM
Did you come right with the transformer? Any pics of install?

Yes - thanks - I think I have everything now, hoping to attempt to install this coming Friday.  (I only get Fridays and weekends for this sort of thing - and I was away this past weekend).

I realized the actual install might be pretty easy as most of the wiring is already done for the existing Hunter system - it should just be a case of removing the hunter system, and replacing with this, as I believe the configuration is the same.

The Hunter system has all the wiring in a conduit for 220v - then the relay and valves. Meaning I wouldn't have to change anything, or run new wiring.

Title: manual override channel
Post by: tangmonster on January 30, 2017, 07:58:37 AM
Hi All

I am running a wellpoint pump on my channel one of my board. My wife wants a local simple override so she can fill buckets of water with it to water some pot plants.

For those with gardners or people who don't want to use a smart phone connected to your network you can simply put a local manual override switch for channels.

note the purple wires running from channel 1 and the TOP input pin to the toggle switch at the bottom of the enclosure. Take note the bottom pin on the input is the common input so do not use that pin.

I have also drawn the wiring in red for reference.

Obviously this can be used for Any number of channels.

(http://img.photobucket.com/albums/v287/tangmonster/opensprinkler%20overide%20channel.jpg)

(http://img.photobucket.com/albums/v287/tangmonster/IMG_20170129_193830%20Small.jpg)

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 02, 2017, 06:06:52 PM
Tomorrow is finally d-day for me.  :rubhands:

Here is my current Hunter wiring (C is the common wire for the valves) P is for the Master value (or I'm assuming the pump relay)

If my understanding is correct -
1.) 1, 2,3 4 go into 1,2,3,4 on the OpenSprinkler board.
2.) The common wire goes into the 24VacCom (anyone of the four?)
3.) Where does the P go for the master valve, from previous diagrams it looks like it goes to the 16? (or is it configurable in the software)

Then - can I setup the software beforehand with only the power connected (and HDMI)?

(http://i65.tinypic.com/29zbx9h.jpg)

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on February 02, 2017, 06:32:45 PM
Set the board up first in your house to make sure all is working.

Like wifi password etc.

Then move outside.

Any channel can be set up as a master. That is up to you.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 03, 2017, 10:03:01 AM
What OS are you running on the Pi?
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on February 03, 2017, 10:06:34 AM
I run the standard raspbian.

you can possibly use the jessie lite version , since you won't need any gui or anything fancy.

install it

set up wifi
I prefer setting up a static IP

from then on you an simply ssh into it and install the opensprinkler app

test and set up the real time clock

etc etc

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 03, 2017, 01:11:54 PM
Getting there.

(https://uploads.tapatalk-cdn.com/20170203/88f9dc9254cd6b79f47bf04d8de0fed3.jpg)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 03, 2017, 04:37:52 PM
All done

(http://i66.tinypic.com/nwknyr.jpg)

(http://i64.tinypic.com/359y3cn.jpg)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 03, 2017, 04:47:15 PM
I wanted to enable VNC and forgot :( Is there a way to do it using SSH?
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 03, 2017, 05:43:49 PM
Nevermind - found it :p
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: MR.C on February 03, 2017, 06:10:48 PM
Am I the only reading the title   as oorspronklikke at first glance ?

Sent from my SM-N910C using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on February 05, 2017, 07:54:43 AM
I'm curious , what do you need vnc for?
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 05, 2017, 10:59:45 AM
I wanted to multipurpose the Pi - but I found a spare in the drawer, so no longer needed.

Considering the simplicity of this - I'm keen to getting the pool pump and pool light working on this system, only problem is it'll have to be wireless.

Then garden lights. I haven't found anyone who knows anything about installing the damn things.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on February 07, 2017, 08:36:13 AM
If you look at teh top of the board there is 3 pins

Data ,12V , GND

you can ad one of these modules to that header:

(https://cdn.instructables.com/FU4/UJYA/HM8DG3Q3/FU4UJYAHM8DG3Q3.MEDIUM.jpg)

If you are on the web ui for a channel you can select RF and ad a code there.

You get lots of cheap mains switches that are RF receivers but then you will have to learn the rf code.

Better option would be to get something like this:

https://www.robotics.org.za/rboard-arduino-core-4-relays.html?search=relay

and write a  program for  it to switch on relays as per your Rf string.

You might want to keep the string longish to make sure some random neighbor doesn't trigger it.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 10, 2017, 12:08:37 PM
Thanks.

Just got this up and running with Google Assistant - so I don't even have to take my phone out of my pocket...voice activated garden  :giggle:
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: boelem_b on February 15, 2017, 01:17:59 PM
Where do you source the TX module?
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on February 15, 2017, 01:29:00 PM

I have found a better way of doing this. I have still to test it.

Source one of these transmitters:

any of these 315mhz transmitters should work they are available at may online sites.

http://www.netram.co.za/1148-315mhz-rf-link-kit.html?search_query=315mhz&results=2

Source one or multiple of these codec adaptive relays:

http://www.netram.co.za/1869-codec-adaptive-wireless-relay-315mhz.html?search_query=codec&results=1






solder the transmitter to the board. ( i added pinouts on the board)

Then in the opensprinkler software on a specific channel < you can add extra channels so you don't use one of the 16 hardware available ones. Select RF
and set a string of numbers.


Then put the relay in "learn mode" and run the channel with the number your programmed.
 

Use different number for each relay , so you can have a whole bunch of relays running lights etc.
For running motors etc with high turn on current I would suggest using the small relay to power a bigger relay.

Here is a youtube clip on using the software with a power plug. I nthe video he first detects the code used by die power plug. You don't need to do this and simply choose your own code , it should be long and unique so your neighbours car remote don't trigger it.

https://www.youtube.com/watch?v=Z7qUXEw24E4

(I was experimenting with A simpel code "123" once and had spurious triggers at home for my front gate)


 



Title: Re: Opensprinkler boards Round 2 Q & A
Post by: Mars67 on March 06, 2017, 11:28:09 AM
I ordered and received one of these OpenSprinkler boards from Tangmonster and received it yesterday. It is of great quality. I also checked and can confirm that a Raspberry Pi Zero works perfectly with this board. I am very chuffed with this solution. Now to dig the trenches and install the pipes and pump!!! :headbanger:
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on March 17, 2017, 08:25:27 AM
Hi All

for those wondering about the 3 pins (data , 12V , GND) at the top of the board.

This connection is to add a RF transmitter.

Why would one want to add a Rf transmitter?

If you want to wireless control things.

For example a wireless relay to control lights or basically anything that can run off a relay.

i took some photos of a test i did last night to show you how:

First purchase a transmitter and some wireless relays. They are normally either 315mhz or 433mhz.

example (localy hobbyshops also has them):

https://www.itead.cc/315mhz-rf-link-kit.html

https://www.itead.cc/315mhz-codec-adaptive-wireless-relay.html

You can obviously have multiple relays and only use a single transmitter ( the transmitter comes with receiver that you won't use)

Connect the RF transmitter to your board. On the later models i added a connector. On earlier boards you will need to solder it.
remember to add a wire for antenna to board. The length of wire is important depending on frequency , google it. :)

(https://s24.postimg.org/tx6w6omyt/IMG_20170316_175048_Small.jpg)

Now select a channel in the app.

I would suggest you set the board to have 24 channels so that you use channel 17 to 24 , rather than one of the 1 to 16 place holders.
Turn off "sequential" ,so that this channel can run even with other channels running.

(https://s21.postimg.org/c7p5uubaf/IMG_20170317_073357_Small.jpg)

Give it a RF code (8 hex bytes) so 16 characters. this has to be the correct type of code else the receiver won't learn it.

(https://s24.postimg.org/hlibmpuid/IMG_20170317_073339_Small.jpg)

Then connect power to your wireless relay. push the "learn" button and run the channel on your app.

(https://s14.postimg.org/ylm3rrghd/IMG_20170316_175141_Small.jpg)


Make sure you select the jump to the correct position , so relay will run and disable at end.

The board is supplying the maximum 12V to the transmitter.

Mine worked through 4 walls and 30m on some wuick tests i did yesterday.

I have not walked to see how far. For a standard yard with a few walls you should be just fine.

With direct line of site , who knows but i would guess 100m +-?








Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on January 23, 2018, 01:48:36 PM
Bumping to see if there is any interest in another run of boards...

Not sure what the minimum quantity is to make it worthwhile for tangmonster, but will go with 10 units until he can chip in.

If you would like a board add your name to the list. Location might help if we want to combine shipping

1. rodga (Centurion) x1
2.
3.
4.
5.
6.
7.
8.
9.
10.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on January 23, 2018, 01:53:03 PM
To stick to same cost would have to be run of 10.

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 23, 2018, 05:20:03 PM
Post reminded me of a question - you can't run the Master channel on its own - would there be any issue with the hardware if you run a channel not connected to anything to get it to kick off the Master?

I want to connect a tap to my irrigation system that I can run manually.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on January 23, 2018, 05:41:13 PM
I also needed that. I fitted a toggle switch between master channel com input to manually switch on pump for filling buckets. Circuit will not be damaged by doing that.

note the crude purple wire between the top AC input and channel 1. connected to toggle switch mounted at the bottom. No need to open up enclosure , just flick toggle switch


(https://image.ibb.co/bZtWpG/IMG_20180123_174313_Medium.jpg)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: lanties on January 23, 2018, 09:02:32 PM
I know I paid for one from the first round that I never collected. 100% my fault. I am still keen on one but would prefer one from the latest design. Happy to top up or pay in full again so please add me to the list.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 24, 2018, 07:28:29 AM
I also needed that. I fitted a toggle switch between master channel com input to manually switch on pump for filling buckets. Circuit will not be damaged by doing that.

note the crude purple wire between the top AC input and channel 1. connected to toggle switch mounted at the bottom. No need to open up enclosure , just flick toggle switch


(https://image.ibb.co/bZtWpG/IMG_20180123_174313_Medium.jpg)

Thanks - what I want to do is setup a empty channel, e.g. Channel 6 - so when I put a timer on it, it kicks off the pump for x amounts of seconds.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on January 24, 2018, 07:48:54 AM
1. rodga (Centurion) x1
2. lanties x1
3.
4.
5.
6.
7.
8.
9.
10.

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on January 24, 2018, 08:31:11 AM
Thanks - what I want to do is setup a empty channel, e.g. Channel 6 - so when I put a timer on it, it kicks off the pump for x amounts of seconds.

oh ,yes , there is no issues with that.

all channels has TVS diode protection to cope with open circuit / inductive connections like solenoids.


The only protection that is not provided is short circuit protection. Technically the fuse will fail , but if the current is under the fuse at some stage the Triac will burn out.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 24, 2018, 08:39:03 AM
Thanks - plan on putting in a tank soon - and will try wireless setup with a level sensor to fill up when empty.. should be fun :)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 31, 2018, 11:40:40 AM
Out of the blue my missing Zero W arrived - will the existing Pi3 power supply work without blowing it?

Then - any idea if a straight swap of the Micro-SD card will work?
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on January 31, 2018, 11:55:30 AM
Out of the blue my missing Zero W arrived - will the existing Pi3 power supply work without blowing it?

Then - any idea if a straight swap of the Micro-SD card will work?

The switch mode regulator on the pcb  has a much higher current rating than is needed even for the pi3. populating a pi zero will simply see less current draw :)

All pi's work on 5V input so no harm can be done.

You simply have a 500VA supply powering a 25W amplifier  :goofy:

as for the micro sd card, tricky question ,but I think it might work , you will have to try. it really depends on what changes you have made from the standard OS install and opensprinkler software install.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 31, 2018, 12:34:30 PM
SD move didn't work :( And now it won't boot in the Pi3 either  :giggle:

Going to setup from scratch - going to be fun as it'll be headless onto the Pi Z
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on January 31, 2018, 01:29:11 PM
www.max2play.com


max2play has WPS built in , which works a treat. Just access the web ui to disable all the unneeded functions.




Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on January 31, 2018, 03:36:56 PM
Thanks - will look into it - back up and running on the PiZero :) Now I have a Pi 3 for other projects
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: Mars67 on February 01, 2018, 09:10:44 AM
SD move didn't work :( And now it won't boot in the Pi3 either  :giggle:

Going to setup from scratch - going to be fun as it'll be headless onto the Pi Z
I must say that is strange as I did a straight swap between a Pi2B and PiZ but not the PiZw though so I don't know if that would have influenced it. It also even stranger that the Pi3 will not boot now (if the only thing you did was to try and boot up the Zero which must be the case as you say it didn't work.) The boot process does not change the image. Maybe your MicroSD card is a bit wonky.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 01, 2018, 09:55:05 AM
I must say that is strange as I did a straight swap between a Pi2B and PiZ but not the PiZw though so I don't know if that would have influenced it. It also even stranger that the Pi3 will not boot now (if the only thing you did was to try and boot up the Zero which must be the case as you say it didn't work.) The boot process does not change the image. Maybe your MicroSD card is a bit wonky.

I think it might have had something to do with the wifi connection - you could see the activity LED on the Zero working - and on the Pi3 afterwards - but it didn't register on the network (static IP).  I also read somewhere that with older versions of rasbian the swop might not, just didn't realise I wouldn't be able to swap back.

Not a hassle though - got to brush up my linux skills again doing a headless install without a network connection initially.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on February 02, 2018, 10:22:51 AM
Bumping to see if there is any interest in another run of boards...

Not sure what the minimum quantity is to make it worthwhile for tangmonster, but will go with 10 units until he can chip in.

If you would like a board add your name to the list. Location might help if we want to combine shipping

1. rodga (Centurion) x1
2. lanties x1
3.
4.
5.
6.
7.
8.
9.
10.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: Mars67 on February 02, 2018, 12:02:44 PM
This is an absolutely brilliant solution if you want to install an irrigation computer. Very well made and worth every penny!!
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: xrapidx on February 02, 2018, 01:40:22 PM
Maybe try on mybb - see if you can get interest over there.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on February 04, 2018, 11:36:51 AM
good idea

I have made a post on the mybroadband forums under :

https://mybroadband.co.za/vb/showthread.php/540513-Your-Raspberry-Pi-Projects

to see if we can get more interest.

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mbayshark on February 04, 2018, 11:54:59 AM
good idea

I have made a post on the mybroadband forums under :

https://mybroadband.co.za/vb/showthread.php/540513-Your-Raspberry-Pi-Projects

to see if we can get more interest.
Hi, will price be the same for new batch as well?

Sent from my Redmi Note 3 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on February 04, 2018, 11:58:21 AM
That is the plan. Apart Rand dollar going south when doing component purchases I don't see a price increase being needed.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mbayshark on February 04, 2018, 12:14:51 PM
That is the plan. Apart Rand dollar going south when doing component purchases I don't see a price increase being needed.
Good stuff. Name added to list.

1. rodga (Centurion) x1
2. lanties x1
3. mbayshark x1
4.
5.
6.
7.
8.
9.
10.

Sent from my Redmi Note 3 using Tapatalk
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on February 04, 2018, 05:10:31 PM
Great idea xrapidx
I see tangmonster beat me to it

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on February 08, 2018, 11:09:50 AM
1. rodga (Centurion) x1
2. lanties x1
3. mbayshark x1
4. Mythor x1
5.
6.
7.
8.
9.
10.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on February 13, 2018, 02:44:00 PM
1. rodga (Centurion) x1
2. lanties x1
3. mbayshark x1
4. Mythor x1
5. hsmnel  (MYBB)
6.
7.
8.
9.
10.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on February 14, 2018, 09:24:04 AM
1. rodga (Centurion) x1
2. lanties x1
3. mbayshark x1
4. Mythor x1
5. hsmnel  (MYBB)
6. YingYang (MYBB)
7.
8.
9.
10.

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on February 15, 2018, 08:12:52 AM
I just did an order for pcb's , with chinese new year I only expect to get them around the 2nd of March though.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on February 28, 2018, 08:57:13 PM
I have received the pcb's

busy ordering components
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on March 02, 2018, 12:31:42 PM
I have received the pcb's

busy ordering components

great stuff

busy sourcing a pi

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on March 13, 2018, 07:38:52 AM
I should have all the parts by next monday , so boards should go in for pcb assembly early next week.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mbayshark on March 13, 2018, 09:08:11 AM
I should have all the parts by next monday , so boards should go in for pcb assembly early next week.
Good stuff, thanks

Sent from my Redmi Note 3 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on March 26, 2018, 09:00:22 AM
Just wanted to update that the pcb's are in for assembly

I have all the rest of the parts except for the 4 way connector which whould be available next week.

Sadly pcb assembly place is VERY busy this week and next week. I'm hoping to get it end of next week but probably not realistic.

will keep you up to date.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on March 26, 2018, 09:48:34 AM
Just wanted to update that the pcb's are in for assembly

I have all the rest of the parts except for the 4 way connector which whould be available next week.

Sadly pcb assembly place is VERY busy this week and next week. I'm hoping to get it end of next week but probably not realistic.

will keep you up to date.
thanks
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on April 09, 2018, 07:41:54 AM
Frustratingly enough Mantech has dropped me on the 4 pin right angle male connectors for these boards ( the phoenix looking degson one)

they should have received stock on the 31st , and now it has shifted to the 11th or 12th. otherwise they are completed.

So close...

(https://image.ibb.co/nRiwbc/boards11_Medium.jpg)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on April 12, 2018, 08:37:43 PM
they are done

ready for shipment.

loaded 11 units as per stock onto the website for purchasing.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on April 16, 2018, 12:10:33 PM
they are done

ready for shipment.

loaded 11 units as per stock onto the website for purchasing.
Great

What payment options do you have on the website?
I will place my order closer to payday  :cool:
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on April 16, 2018, 12:17:44 PM
Only eft

I ship as soon as funds clear.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on April 30, 2018, 08:12:09 AM
I have ordered one off your www site, but the interface does not ask for payment ... You mention here (and not on the www site) to do EFT which I can only do if I get your banking detail. Please let me know how to pay you. :thinking:
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on April 30, 2018, 02:42:19 PM
I have ordered one off your www site, but the interface does not ask for payment ... You mention here (and not on the www site) to do EFT which I can only do if I get your banking detail. Please let me know how to pay you. :thinking:

sent PM. Have not received order from "Herman" on website.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on April 30, 2018, 03:33:51 PM
Thanks for the reply. I have emailed you directly.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on April 30, 2018, 04:02:23 PM
OK, third time lucky! Ordered  :thumbs:
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 03, 2018, 03:45:43 PM
Excellent service! Got the board just now  :rubhands:

Quality of the PCB is very good. Just some advice. Put the instruction sheet with the PCB in a zipped plastic bag as I accidentally noticed the sheet when I threw the envelope in the recycle bin.  :roll:
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mbayshark on May 03, 2018, 05:21:06 PM
they are done

ready for shipment.

loaded 11 units as per stock onto the website for purchasing.
Thanks tangmonster, my board was delivered this morning. Can't wait to start playing with it.

Sent from my Redmi Note 3 using Tapatalk
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 04, 2018, 08:27:43 AM
Put the instruction sheet with the PCB in a zipped plastic bag
Make that an anti static shield zip bag. Then you address two problems in one go!
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on May 04, 2018, 08:54:43 AM
The antistatic bag is not a bad idea. I normally put carton around for extra protection even though envelope has bubble wrap.

antistatic bag however is normally a bit stronger physically ,and can provide that little bit of extra protection. :)

Thanks
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 04, 2018, 12:18:41 PM
hmmm, just ran into a problem ... nowhere does it state that the PCB can only fit a Pi3 ... so I now have to buy one.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on May 04, 2018, 12:22:57 PM
hmmm, just ran into a problem ... nowhere does it state that the PCB can only fit a Pi3 ... so I now have to buy one.

it can work with any pi

a , B ,zero ,2 and 3

any pi will work.

which pi are you trying to use?

The only ones that are a pain is the VERY old ones with no mounting holes or the 2 mounting holes that are diagonal. Those are a pain to use with any pcb , best option there is to use a ribbon cable or get creative in some other way. (glue gun?) But electrically they will work.

For the cheapest option a pi zero wireless is the simplest/cheapest option:

https://www.pishop.co.za/store/raspberry-pi-zero/raspberry-pi-zero-wireless-wh-pre-soldered-header




Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 04, 2018, 12:57:55 PM
Model B Rev 2 with 2 mounting holes that are diagonal. Simply does not fit any way.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 04, 2018, 01:03:49 PM

For the cheapest option a pi zero wireless is the simplest/cheapest option:

https://www.pishop.co.za/store/raspberry-pi-zero/raspberry-pi-zero-wireless-wh-pre-soldered-header

Will look into this thanks
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on May 04, 2018, 01:08:35 PM
I have a pi prior to that one essentially the same apart from not even having the 2 diagonal mounting holes:



(https://image.ibb.co/cZkEtn/IMG_20180504_130319_Medium.jpg)

fits just fine.

sturdy even without standoffs ,not fouling anywhere. obviously don't fit any of the supplied stand offs to pcb with these old pi's.

piece of plastic with some gluegun should make it even more sturdy but this one felt good.


most of the pins even on the 20 way connector i fitted isn't even used. so don't worry about pins. , just make sure to fit with pin 1 ( square pin) on both PI and PCB alligned. having those out of alignment (offset pins to the left or right or top or bottom) will possibly create smoke.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 04, 2018, 01:21:51 PM
best option there is to use a ribbon cable

Which pins on the header must be connected between the two boards? I am trying to determine the correct ribbon cable header pin numbers (ie width of the header).
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on May 04, 2018, 01:38:53 PM
Which pins on the header must be connected between the two boards? I am trying to determine the correct ribbon cable header pin numbers (ie width of the header).


In my previous post with photo. I couldn't remember how well it fit and have tested it just now with older pi.
It is much easier and less hassle to just fit it and gluing in a standoff. The chance of plugging in the ribbon cable wrong way round is high. and something extra to purchase. and that leaves you with a loose dangling item to mount.

First 9 pins on row with pin 1
first 5 pins on row with pin 2

simply put , 9 pins on both rows:

(https://image.ibb.co/mC92eS/pins2.jpg)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 04, 2018, 02:58:22 PM
OK, I soldered two rows of 13 header pins into the empty P5 connector holes on the PCB. Using a parallel port 13 pin ribbon cable. Will figure the reversal prevention out later. Maybe block some holes. Will see.

Will post pics later.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 04, 2018, 03:03:13 PM
To solve the too short standoff connectors just include 4 off 3.2mm ID fibre washers in the kit. Will prevent bending of the RPi PCB and over tightening of the screws.

Refer https://za.rs-online.com/web/p/sealing-washers/0526350/
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 04, 2018, 03:17:35 PM
I desoldered the unused header pins 12 and 14 on the PCB and blanked that corresponding holes off in the header socket. Now the cable cannot be reversed.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on May 15, 2018, 12:49:46 PM
Hi All

The website where i was hosting the boards for sale is down and has been down since end of last week.

the people hosting it is not responding to any of my emails and phone calls go unanswered.

long story short:

I will have to do orders on PM so please contact me , I have about 6 boards left if you want a board.

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on May 15, 2018, 08:48:54 PM
Thanks, my board arrived today. Now to get the rest of the items to convert my manual system to an automated one.

Can setup the board and Pi without actually connecting any of the channels?

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on May 16, 2018, 08:25:17 AM
Thanks, my board arrived today. Now to get the rest of the items to convert my manual system to an automated one.

Can setup the board and Pi without actually connecting any of the channels?

Sent from my Redmi Note 4 using Tapatalk

No reason why you can't have it running on your desk. will work just fine like that.

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on May 16, 2018, 08:27:04 AM
No reason why you can't have it running on your desk. will work just fine like that.
Cool I'll be playing around with it then lol

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on May 16, 2018, 10:54:03 AM
Hi ALL

I have decided to work with smartkit regarding the sales and stocking of these boards.

So any stock availability questions and sales questions should be directed to them.

I will try my best to answer technical questions and by all means keep posting them and your photos and your installs in this thread.

My own board has been running for more than 3 years 24/7.

Through smartkit there will also be made available extra options , including IP rated enclosures etc.

Obviously this WILL include extra costs including VAT etc.

The cost at which I was providing these with the small production runs was never going to be a sustainable model time wise for me especially , taking into account packaging etc etc.

I will not be able to supply these at a cheaper cost than Smartkit ,please don't ask. :)

Link to new place to order:

http://www.smartkit.co.za/product/smartkit-openirrigation/
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on May 18, 2018, 02:51:17 PM
Found this power lying around, will it work?

(https://uploads.tapatalk-cdn.com/20180518/6fad9e67ebdea373272a75c938c12df8.jpg)

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on May 18, 2018, 03:27:41 PM
Nope, the amps are too low, you need at least 2A @24VAC min. Buy the correct transformer at any irrigation house.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on May 18, 2018, 03:30:05 PM
OK cool
Will probably get one from smartkit guys

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on May 18, 2018, 04:24:48 PM
Depending on which pi you use you need around 0.5 to 1.5 amps for the pi. Remember the pi runs on 5v. You could easily for testing purposes run the board with just the pi on 16v AC. (Not DC). Solenoids all run on 24vac so you should get 24vac transformer for the final product. You could easily run a system including 1 solinoid at a time with a 1 amp. 24vac transformer.

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on May 18, 2018, 04:32:29 PM
 If that transformer is AC you could bench test it with it. It just has too low voltage for irrigation taps.

Never power the pi from micro usb while plugged into the board. Board supplies pi with 5v from AC input
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on July 24, 2018, 05:00:02 PM
Guys is this correct power supply?
https://www.acdc.co.za/pages/product-individual?25VAP-12-T

If not please link to one I can check out online please.

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on July 24, 2018, 05:22:10 PM
That one is only 12v you need 24v AC.
25VAP-24-T. Would be the one
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on July 24, 2018, 05:47:22 PM
That one is only 12v you need 24v AC.
25VAP-24-T. Would be the one
Ah yes, I linked to the wrong one. That's the one I have.

I'm assuming the wiring from the terminal block is like lamp wiring? Ie. Live/neutral or pos/neg?

(https://uploads.tapatalk-cdn.com/20180724/26c2408babbb228436d02bad610effc4.jpg)

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on July 24, 2018, 06:00:02 PM
It is isolated AC. So technically no neutral or live. Polarity doesn't matter.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on July 24, 2018, 06:06:50 PM
Thanks tangmonster

Sent from my Redmi Note 4 using Tapatalk

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: Prince on July 26, 2018, 10:36:25 AM
Depending on which pi you use you need around 0.5 to 1.5 amps for the pi. Remember the pi runs on 5v. You could easily for testing purposes run the board with just the pi on 16v AC. (Not DC). Solenoids all run on 24vac so you should get 24vac transformer for the final product. You could easily run a system including 1 solinoid at a time with a 1 amp. 24vac transformer.



On the RPi power supplies.

-The RPi A/B/B+ all use the 5V /2A power supply units. Obviously, if you have extra boards attached to the RPi, like a HAT, you would need more current supplied. I'm currently using my RPi B with a hifi-berry dac running off the 5V/3A power supply.
-From the RPi 3B/B+ you require the 5.1V/2A power supply units. -Here I would recommend buying the original RPi power supply, because of the voltage difference. I bought a 5V/3A power supply unit for my RPi and works, but gives the low voltage square when you run the RPi 3. Not a problem, as per say, just irritating.

-Hope this helps.

 :cool:

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: tangmonster on July 26, 2018, 11:10:09 AM
Please remember that the raspberry pi board is powered from the AC with a switch mode supply that regulates the 5.1V for the raspberry pi.

Do NOT power the raspberry pi with 5V also. only 24V ac is needed.

Even a pi 3 under normal use with wifi should stay under 1 amps 99% of the time.

Remember the 25VA transformer can roughly supply 1 amps at 24Vac.

This gets regulated to 5V with an onboard switch mode regulator.

So you can get much more than 1 amp of the 5V.

Switch mode regulators are not as inefficient as linear regulator.

So if you are drawing 5V and 1 amps ( 5W) from the output of the regulator , and the regulator is roughly 80% efficient you will be drawing little bit over 200mA from the 24Vac transformer for the pi. Leaving further 800ma headroom for your solenoids and relays etc.

But a pi in idle like we are using it with wifi enabled really should average around 300-500mA  (thumbsuck)


Here is some text on current draw:

https://raspi.tv/2016/how-much-power-does-raspberry-pi3b-use-how-fast-is-it-compared-to-pi2b

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: RVZ on November 26, 2018, 11:40:18 AM
I pm'd Tangmonster to get some info, but maybe someone else can also assist. 

I bought one of the OpenIrrigation boards from Smartkit last week.  Apparantly you can control a water pump through this as well?  Anyone know what I will need to do this?

I bought this for the transformer:  https://www.acdc.co.za/pages/product-individual?25VAP-24-T

I have one of these water pumps:  https://www.brights.co.za/product/dab-jet-102-wellpoint-pump/

Xrapidx on MYBB did this with a relay, but I'm not quite sure about the details of what I need, and don't want to blow up the board / pump / Pi...  ;-)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on November 26, 2018, 03:21:29 PM
You will need a non-latching relay to start the pump. The relay to be switched by one of the output channels.

Your pump will draw in the order of 1kW at 220VAC which is approx 5A. Make that 10A that the relay will have to handle for safety and durability.

The coil of the relay will have to handle 24VAC as this is the voltage of your output channel.

I would use one such as this https://za.rs-online.com/web/p/non-latching-relays/0353843/ that plugs into a base such as this https://za.rs-online.com/web/p/relay-sockets/0353944/ mounted on a standard piece of DIN rail.

Read howto - https://rayshobby.net/wordpress/using-24v-ac-relays-with-opensprinkler/
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: RVZ on November 26, 2018, 03:28:09 PM
Thanks for the info, especially the howto, I'm still a bit unsure of how it will all connect.  It will probably make more sense once I get the parts and start putting it all together.

Tangmonster suggested these, which I ordered today.

relay: http://www.mantech.co.za/ProductInfo.aspx?Item=14M2219
socket: http://www.mantech.co.za/productinfo.aspx?item=14MA203

Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on November 27, 2018, 10:18:09 AM
The wiring itself is a simple exercise if you know what to do. You will need a 2 pole 10A circuit breaker to protect the relay and cable to the pump as well. This will clip into the same DIN rail as the relay base.

Use something like this - https://za.rs-online.com/web/p/mcbs/8473125/

You may argue you do not need to isolate the Neutral line to the pump, but I prefer doing that as you might want to work on the pump and a local complete isolation is much more secure IMHO.

The wiring diagram is fairly simple. I will see if I can rustle something up.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: RVZ on November 29, 2018, 01:54:07 PM
The wiring diagram is fairly simple. I will see if I can rustle something up.

Thank you, will really appreciate it.  :)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on December 01, 2018, 09:25:55 AM
Thank you, will really appreciate it.  :)

Here you go. All equipment to be mounted in a IP65 rated enclosure. The isolator, two circuit breakers and the relay to be mounted on a DIN rail. Supply cable to be 2,5mm2, connecting wires to be 2,5mm2.


(https://i.imgur.com/7MdFQqz.jpg)
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on December 04, 2018, 10:05:22 AM
So I think this load shedding must have got the better of my opensprinkler setup.
I cant seem to detect the opensprinkler when opening the app and then the pi itself is also not connected when looking at the device list.

When powering on the pi green led will flash twice, then once more and nothing after that.
Can anyone confirm what the green led on the pi is supposed to do? Is on, off or flashing in normal operation?
Hopefully im lucky and only my sdcard has gone or something?
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on December 04, 2018, 11:19:43 AM
Two greens flashing means it is alive and will look at the SD card. Third flash AFAIK means it is reading the SD Card.

So your SD card is shot is my first instinct. Of course you have made a DD image of the SD card and stored this offline so that you can simply rewrite a new SD card ...  :whistler:
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: rodga on December 04, 2018, 12:04:04 PM
Two greens flashing means it is alive and will look at the SD card. Third flash AFAIK means it is reading the SD Card.

So your SD card is shot is my first instinct. Of course you have made a DD image of the SD card and stored this offline so that you can simply rewrite a new SD card ...  :whistler:
yeah ofcourse I have  :whistler:
Will check it out this evening when I get home
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: Mars67 on March 25, 2019, 09:27:33 AM
It has taken some time since I bought the board  to get my borehole equipped, tanks installed and the pressure pump system running. All the time the board was lying in my store room patiently waiting. Overt time I was collecting the required items such as a 24v AC transformer, Raspberry Pi Zero W and nice enclosure. I have now got everything up and running and assembled and installed the system. Now the work of digging trenches and installing the irrigation water circuits has started in earnest. It is quite a job getting adequate trenches into 4000 squares of lawn and flower beds!!! :be: At least the first line is in and running. Lots and lots of digging to follow in the coming weeks-months. I thought I would post some pics. of the final result.

(https://i.imgur.com/NJCdGO0.jpg)

(https://i.imgur.com/6Z1UJ84.jpg)

(https://i.imgur.com/mN7d8SL.jpg)

(https://i.imgur.com/DVML4fB.jpg)

It works amazingly well. I just found that it works better for me when it has a static ip. It is faster to connect to the computer.
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: mygoggie on March 25, 2019, 11:05:44 AM
Great, looks good. I need to connect mine as well ...
Title: Re: Opensprinkler boards Round 2 Q & A
Post by: Mars67 on March 25, 2019, 01:57:43 PM
Thanks for the compliment. It is actually ridiculously easy to assemble and install.