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Author Topic: 9vac to 4n35 to ardunio  (Read 3745 times)
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Atlanta, GA
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I misspoke - I've got it connected to collector - and not the base.

I'll try see if I have a different ac wall wart in my junk pile

again thanks for your help
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If you disconnect the opto, and just put a simple push button in its place to pin 4, and open/close that bunch of times, do you still get the same lock up behavior?
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

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that works fine.

I can remove a 10vac leg and it works correctly
I can switch the 110 side of the transformer off via a strip surge protector and that works correctly
I can unplug/plug in/unplug etc the surge protector from the 110 source and that works correctly

It's only when I unplug/plug in/unplug the transformer from the 110 source that the arduino locks up

anyways - I found a 18vac doorbell transformer - and that doesn't lock up the arduino - so it's just has to be that other transformer - odd

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Yes, very odd indeed.
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

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thanks for your help
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Is it just me, or have all the files attached to posts disappeared?

It is a side-effect of being promoted to Moderator (congratulations, I think  smiley-wink).  The suspicion is that the forum software has a bug or that an Administrator needs to make a configuration change.
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Thanks Coding smiley-cool

I have asked Massimo about the attachments disappearing.
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

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