2/3 failed. One was shorted somewhere in the circuit between VCC and ground. One had a marker that popped out. The third worked. If you are using an RPi you will need to use an NPN transistor for grounding. It doesn't respond to the 3.3V that the RPi outputs in its GPIO, high or low. You need to use the middle pin in NPN and then use ground as the signal. But that assumes yours works. Maybe I just lost the lottery, but 2/3 is a terrible work rate.
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