![]() To read an analogue voltage from pin A4 you use the following code and function: There are six pins on the Arduino Uno (shown below A0 ~ A5) thatĬan be selected for an ADC measurement A multiplexor feeds one of the six So you can get a lot of detail when measuring You can measure a voltage between 0V and 5V with a resolution of 4.9mV Voltage and converts it into a digital value. The ADC or Analogue to Digital Converter takes an input Find out what the Arduino voltage reference voltage is for.Exactly how does a successive approximation ADC work?.Find out the sample rate for the Arduino. ![]() Find out why your calculated value is wrong (divide by 1023 or 1024). ![]() The sample rate and how to use the reference. ![]() How does the ArduinoĪDC work? Should you use 1023 or 1024 in your calculation? Find out Arduino Adc Arduino ADC:Everything you Must. ![]()
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