This device will help encourage you to spend less time with social media or tech devices. It will turn the brightness of your device down as long as you aren't cranking the rotary encoder arm. You must continue cranking in order to raise and keep the brightness level up.

This is a good project to show how you can use CircuitPython and HID to interact with mobile devices without having to write an app!


Video of a woman turning the rotary  on Rotary Trinkey. The LED changes rainbow colors.
It's half USB Key, half Adafruit Trinket, half rotary's Rotary Trinkey, the circuit board with a Trinket M0 heart, a NeoPixel glow, and a...
Rotary Encoder with rubbery knob
This rotary encoder is the best of the best, it's a high-quality 24-pulse encoder, with detents and a nice feel. It is panel mountable for placement in a box, or you can plug it...


USB OTG Host Cable with Micro B OTG male to A female in black
This cable looks like a USB micro cable but it isn't! Instead of a USB A Plug, it has a USB A Socket on the end. This cable is designed for use with OTG (On the Go) host devices...

This guide was first published on Jun 30, 2021. It was last updated on Jun 20, 2024.

This page (Overview) was last updated on Mar 08, 2024.

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