Hello, I recently bought the Ringo 2G through Elektor’s shop, soldererd everything, did the first test everything went fine and I went through the calibration and test procedure.
Next day wanted to play a bit with it and the joystick acted weird. Since I did not charge the battery fully, I thought that it must be just that.
I charged the battery full, retested and the phone registered input with the joystick in neutral. I lost directions UP, LEFT and UP-LEFT. DOWN-RIGHT seems to register very often.
I took a look on the schematics, took some measurement with my voltmeter and found that with joystick in neutral, the X pin is at a voltage varying around 0.3 0.5v and Y pin is at a fixed 2.9v.
I have 3.3v on X+ pin and Y+ pin. X- and Y- properly grounded. No solder bridge. The ADC gets proper 3.3v ( I assume so, I did not take the oscilloscope )
I think the joystick is broken.
I recorded everything in a video, it was to provide content for my youtube chanel, that’s still a 3h long video so it will take me some time if you want some footage.
I can take oscilloscope measurement if needed too.
I can buy the part if it’s not in the scope of the support, I just need the part references.