30 Jul '17, 3am

Learn how to use the #Arduino's #analog I/O!

Learn how to use the #Arduino's #analog I/O!

An analog signal is one that can take on any number of values, unlike a digital signal which has only two values: HIGH and LOW. To measure the value of analog signals, the Arduino has a built-in analog-to-digital converter (ADC). The ADC turns the analog voltage into a digital value. The function that you use to obtain the value of an analog signal is analogRead(pin). This function converts the value of the voltage on an analog input pin and returns a digital value from 0 to 1023, relative to the reference value. The reference is 5V on most Arduinos, 7V on the Arduino Mini and Nano, and 15V on Arduino Mega. It has one parameter which is the pin number.

Full article: https://www.allaboutcircuits.com/projects/using-the-ardui...

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