2 layers90 × 71 mm

Power extender
StarGate01/power-extender
Hardware and software for a power and IO extension PCB with current monitoring and I2C interface.
78 parts5MIT
KiCad boards from 2 GitHub repositories tagged “current-measurement”, the most starred first; open any of them in PCBKit.

StarGate01/power-extender
Hardware and software for a power and IO extension PCB with current monitoring and I2C interface.

Guiimartinho/open-power-profiler
Open-source PPK2-class power profiler built on the Raspberry Pi Pico 2: 100 kSPS, 100 nA to 1 A auto-ranging, source meter and ampere meter modes, USB stream.