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Computers & Networking
Opensprinkler boards Round 2 Q & A
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<blockquote data-quote="tangmonster" data-source="post: 733376" data-attributes="member: 1581"><p>Thanks , yes this makes sense</p><p></p><p>Hi All</p><p></p><p></p><p>The basics of powering show very good in the below picture:</p><p></p><p>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.</p><p></p><p>ONLY 24V AC.</p><p></p><p>The onboard circuit regulates the 24Vac to 5V dc to power the pi Directly from the Header.</p><p>The Pi then has in onboard 3.3V regulator.</p><p></p><p>This regulator is used to power other circuits like the DS1307 RTC etc.</p><p></p><p>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.</p><p></p><p><img src="http://img.photobucket.com/albums/v287/tangmonster/connections.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="tangmonster, post: 733376, member: 1581"] 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. [IMG]http://img.photobucket.com/albums/v287/tangmonster/connections.jpg[/IMG] [/QUOTE]
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Audio and Video Talk
Computers & Networking
Opensprinkler boards Round 2 Q & A
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