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    ADC - What is the maximum voltage value possible to measure?

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    • D Offline
      dabal221
      last edited by

      My question is:
      (1) What is the maximum voltage value that can be measured by the ADC?
      https://learn.adafruit.com/micropython-hardware-analog-i-o/analog-to-digital-converter
      It is said here that 1.4V, but I connected the battery voltage of 1V and the value from the converter was already maximum, i.e. 4095.
      Does anyone have any suggestions?

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      • O Offline
        oligauc @dabal221
        last edited by

        @dabal221 Please read here

        The maximum is 3.3v at an attenuation of 11db. Please calibrate the ADC before usage.

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