A possibly over-engineered and disturbingly affordable system for operating two independent latching buttons in a guitar pedal based around the STM32F030F4Px and Embassy.
Need help implementing this in your own designs? Want something custom? Let's chat.
We want two switches, each with:
- "Hold for momentary" operation
- Persistent state between power cycles
...and we want it on a budget (ideally under $1 total), with parts readily available for pick and place in small quantities.
Here's an schematic depicting usage of the firmware in this state.
