MicroPython Forum (Archive)

I think the problem you're hitting here is the interrupt latency of the ESP8266 which is frankly appalling.

Does this still apply to the ESP32?

[quote="pythoncoder"]Given the observed rates of contact bounce events and the simplicity of the ISR this strikes me as improbable and I didn't observe it in testing.[/quote] I believe this is happening to me. I looked at one of the encoder channels on my scope and saw that my pulses are about 600μs...

mattyt wrote:Not sure if you're using the timers to interface to a Rotary Encoder but, if so, I've found Spotlight Kid's Encoder library works great...

Callback function here takes also close to 800μs and I'm seeing similar results.

If you've no objection I'll update the original to reflect these changes which should provide portability to any MicroPython platform. That's fine. I've also discovered an issue. It seems the callback routine is around 800μs, which is a bit too slow for my application and is causing me to lose coun...

I modified the code as pythoncoder said and tested successfully with a quadrature encoder. You can find the code here https://github.com/Evidlo/periscope/blob/master/spooling/code/encoder.py Use it like so: from machine import Pin from encoder import Encoder pin_x = Pin(4, Pin.IN) pin_y = Pin(5, Pin...