Arduino automatic dust collection system 10:39 am October 20, 2022 By Julian Horsey ...

The system consists of a hall effect sensor at the pedals to measure cadence, an Arduino controller, and a servo mechanism to replace the manual shifter. Everything is mounted in a small enclosure ...

It's a bit of a complicated set up, but FreedomToCreate's guide has everything you'll need, as well as the code to put on the Arduino. You'll need to tinker a bit to get it to work with your own ...