How to read voltage and use the power at the same for (EX. Servo)

Other Hardware General Electronics
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Oi! make your own voltage divider, cool!

Voltage Divider Calculator (ohmslawcalculator.com)

I use 10K for R2. If using a 5V MCU use 5V for Vout, if using a 3.3V MCU use 3.3V for Vout.