tuning-knob-pcboard

https://github.com/bmo/tuning-knob-pcboard

This is a KiCAD PC Board design for a tuning knob that works with PowerSDR and SmartSDR and Remote Ham Radio (RHR). Uses STM32 hardware. Find the software that works with this here: https://github.com/bmo/hwcontrol

Features:

24ppr encoder

multiple ways to build it

uses mostly-available STM32F103 "Blue Pill" PC boards, may also work with newer, more powerful, more available, and cheaper (!?) "Black Pill" PCBs using STM32F4xx CPUs (with code changes)

through-hole parts

20-30 minute assembly

traces already supplied for future expansion for footswitch inputs, flash memory, SPI-based displays

works with RHR, PowerSDR, SmartSDR when used in conjunction with https://github.com/bmo/hwcontrol

Version 1:

Build it two ways:

snap-action tactile switches and 3mm LEDs

small tactile switches with built-in LEDs

isolated pin 40 to not prohibit "Black Pill" from being plugged in