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Tutorial: Accurate Arduino ADC readings

Posted on Wednesday, June 13th, 2012 in Arduino, measurement, tutorials by the machinegeek

The Hardware Hacking guys have posted this brief tutorial with tips on improving the accuracy of ADC reading with the Arduino. They endeavor to do this by measuring the internal 1.1V reference voltage (it is available for ATMega 168 and ATMega 328 only) and, then, by normalizing the ADC.

Via the Arduino Blog.

This entry was posted on Wednesday, June 13th, 2012 at 3:00 pm and is filed under Arduino, measurement, tutorials. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

One Response to “Tutorial: Accurate Arduino ADC readings”

  1. Jope says:

    They make the common error of dividing by 1023 instead of the correct 1024 to calculate the voltage.
    You won’t get anything accurate when you do it like this.

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