The USB interface is being increasingly used as a power supply and charging port for ... resistive divider that has a range of up to 6V. An Arduino sketch reads voltage and current data on the ...

USB chargers are everywhere ... over the D+ and D- lines, set by Arduino and voltage dividers. The code provides function calls to simplify the control of the power supply. The video below shows ...

The Arduino Nano and Raspberry Pi Pico support different input voltages, so they also use different power sources. However, they can both be powered with a 5V supply via their onboard USB ports.