Supermini RP2040 Zero

Supermini RP2040 Zero is a variant of the RP2040 Zero microcontroller. It has the same small footprint and castellated holes arrangement, and exposes the same pins.

Unlike the standard Zero, all components are on one side of the PCB, which make it easier to PCB mount it. In addition, it has just the one on board button (to enter the bootloader).