Noisy rotary encoders

[elbosmo]

I've made a simple button box with 3 axis and works very nicely and was easy to do with FreeJoy and the nice config tool.

The only issue I have is with a rotary encoder. I have tried two different models and multiple of the same model. I have tried the 1.7.1b0 and 1.7.0b3 firmware as well. Also I have tried to use different ports on the STM as inputs (C13/14 and B11/B10), in all cases directly connected with "Button Gnd" configuration. I have tried the 1x, 2x and 4x encoder settings. Also tried stronger pull-ups and capacitors etc, but made no difference.

In all cases the encoder does not work without occasional false presses. When rotating one direction, it randomly also has a button press for the other direction, same for rotating the other way. This happens say each full rotation at least once. Rotating slow or fast does not make a difference. It may also have multiple presses while physically only moving it a single notch. It may generate a button press but rarely, when just wiggling knob without passing a notch

I have tested the same encoder with https://github.com/mathertel/RotaryEncoder with an arduino nano. I tested the simple SimplePollRotator example using the "FOUR3" latchmode and it worked without any problems, no false or double readings at all.

[beastieboy]

I tested FreeJoy encoder code in separate project. It works but pin configuration had to be changed to PullDown. Most of encoders use different polarity than assumed here.

[leandrol360]

@beastieboy, how can i change the pin to pulldown?

[Merlyn42]

I am having a similar issue although I haven't tested as thoroughly as @leandrol360.

[leandrol360]

I'm still having the problem, does anyone have any tips?