Simple USB Power Tester based on ATtiny25/45/85 and INA219. The device measures voltage, current, power, energy, capacity and displays the values on an OLED screen. You can switch between different ...

The cable tester is a beautiful black circular PCB, with USB ports of nearly every type on the edges. It works partially through passive detection with LEDs and otherwise through active detection ...

This only works on USB hubs that have the hardware necessary to allow software controlled power switching. Most hubs DO NOT include the hardware. You can control the power on a port using the ...