Quote:
Originally Posted by Hoover
If none of this works on the roboRio, how do we test if we are getting output to the digital pins? Can that be done with a volt meter?
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Yes.
If you have a cheap analog voltmeter use that instead of digital.
Just set the voltmeter for the 12 volt scale and measure the voltage between the A channel and ground. Turn the encoder shaft
very slowly and you should see the needle go from zero to some positive value. Repeat for B channel.
PS it goes without saying (I hope) that the encoder must be powered.