This project started because of a random conversation in our company Slack. Someone mentioned building a custom keyboard for trading with our Cryptowatch Desktop product, similar to those Bloomberg trading terminal keypads. I thought it would be a fun side project to work on.

The Concept: 4k20 Keypad

I wanted to build a small companion keypad with 4 rows and 5 columns of keys (20 keys total), plus 4 rotary encoders for extra control. The plan was to use a Teensy LC as the brains, with the keypad working as a shield that would connect to it.