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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@hungryforcodes
I tried it out and it worked (rotation with no crashing). However after, I started adding some intervals for other stuff and the quality of the readings degraded significantly -- it couldn't really figure out when a rotation was happening or not. I would spin it, and the value wouldn't change, but sometimes it would -- kind of unreliable. I guess this is because its using software interrupts? For my build the encoder is important, so I'll probably dedicate a small mcu like an ATTINY85 or an ESP-01 with Arduino on it, just to read the rotation. Then feed that into my ESP32.