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Audio and Video Talk
Reel-to-Reel & Cassette Tapes
Revox B77 REAL time digital counter conversion - part 1 - the mechanicals..
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<blockquote data-quote="marcochezzi" data-source="post: 1022631" data-attributes="member: 21001"><p>Pascal I used 2 optocouplers 90 degree out of phase as the timing signal source and direction logic switch, basically the same as a rotary encoder. I did not use microprocessors, I used dedicated cmos logic chips and designed the counter around that, including the pulse divider to 1hz.</p><p></p><p>I have subsequently changed the chips to a much simpler dedicated counter chip after I was informed of them in this forum, but if you are good with microprocessors I am sure you will find a simpler solution, I am useless at microprocessor level.</p><p></p><p>I am not home today, so I will send you the new chip details when I get home tomorrow if you want to go the old school route..</p><p></p><p>Best regards- Marco</p></blockquote><p></p>
[QUOTE="marcochezzi, post: 1022631, member: 21001"] Pascal I used 2 optocouplers 90 degree out of phase as the timing signal source and direction logic switch, basically the same as a rotary encoder. I did not use microprocessors, I used dedicated cmos logic chips and designed the counter around that, including the pulse divider to 1hz. I have subsequently changed the chips to a much simpler dedicated counter chip after I was informed of them in this forum, but if you are good with microprocessors I am sure you will find a simpler solution, I am useless at microprocessor level. I am not home today, so I will send you the new chip details when I get home tomorrow if you want to go the old school route.. Best regards- Marco [/QUOTE]
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Audio and Video Talk
Reel-to-Reel & Cassette Tapes
Revox B77 REAL time digital counter conversion - part 1 - the mechanicals..
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