I have purchased 10 rotary encoders on ebay.
20 steps per rotation. with detents. Includes tact switch function.
Three pins on one side, for the rotary encoder and Two pins on the other side, for the switch.
Lets focus on the three pins.
I assume the central pin has to be connected to GND.
And the other two pins are outputs A and B, right?
Okay, doing a continuity test with a multimeter, when I test continuity between A and middle(GND), I get no continuity (no beep), no matter how many times I rotate the knob. I only get a transient beep on each click.
Same goes between output B and GND.
I have tested several encoders of the pack, and it seems all are the same.
Are these faulty, or maybe I didn’t understand the theory of these devices?
The seller has no clue.