2 things:
- What is the top jumper set for (5V or 3V)?
- To test the decoder itself (no harnesses), hook up only 5V and GND to the decoder, plug in a game controller, and grab a voltmeter. Put the voltmeter between GND and UP and watch the voltage change when you hit UP on your controller. Now go through every terminal the same way for each direction and button signal on your controller.
-ud
- What is the top jumper set for (5V or 3V)?
- To test the decoder itself (no harnesses), hook up only 5V and GND to the decoder, plug in a game controller, and grab a voltmeter. Put the voltmeter between GND and UP and watch the voltage change when you hit UP on your controller. Now go through every terminal the same way for each direction and button signal on your controller.
-ud