I'm planning to power my ESP32 board directly from a battery. How can I measure the state of the battery to alert a user on low battery?
May I apply VCC directly to an analog input to measure the battery voltage?
A battery measurement
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Re: A battery measurement
That depends on the battery, but generally, no. You need a voltage divider to bring the voltage in range of the ADC.
Re: A battery measurement
It will be 1.8v?ESP_Sprite wrote: ↑Fri Aug 14, 2020 7:51 amThat depends on the battery, but generally, no. You need a voltage divider to bring the voltage in range of the ADC.
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