ARDUINO MEASURES REMAINING BATTERY POWER WITH ZERO COMPONENTS, NO I/O PIN
[Trent M. Wyatt]’s CPUVolt library provides a fast way to measure voltage using no external components, and no I/O pin. It only applies to certain microcontrollers, but he provides example Arduino code showing how handy this can be for battery-powered projects. The classical way to measure a system’s voltage is to connect one of your MCU’s […]
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