4604
« on: July 18, 2013, 03:46:31 PM »
Ok I am not familiar with the BOB and pic isnt big enough for me to see however what I am asking, if you put a voltmeter between the 5v beside an input and the Gnd do you get 5v? If yes then that means they are basically from the same supply.
Ok so if that is the case then I wonder if the pull down resistor is too strong for the input? I am not an electronics guy so cant really say even if that could be an issue but I think it could be.
If you take the Output wire from opto out of your BOBs input and connect your voltmeter between it and the Gnd you should be able to block/unblock the opto and you should see the voltage on your meter.
Hood