While I started to design a KNXduino 1.0 board with a new hacker-friendly STM32G0 MCU, I waited for STM32 Arduino Core support. Now, the STM32G0 line is supported since version 1.6.0.

Why we love STM32G0:

• LQFP32 package - manually solderable
• Fair amount of Flash and RAM while promising more in year 2020
• Single power rail - ie. only two power pins, single decoupling capacitor needed (+1 for Reset pin), thus simpler PCB, fewer components and more IOs available
• Accurate internal RC oscillator - no Xtal needed for many applications, thus simpler PCB, fewer components and more IOs available
• In short - True replacement for 8-bit MCUs