Current signals at 4...20 mA are frequently used to send process signals to controllers in industrial applications. Compared to an analog voltage signal or digital communication, the current loop ...

Conversely, the comparator output and the connection to the Arduino’s analog converter (A0) are labeled nodes from the “Output and Labels” menu. The names are significant, including the spaces.

4-20 mA Current Output for the Arduino Uno 4-20 mA Current Output for the Arduino Uno Current signals of 4-20 mA are commonly used in industrial applications to transmit process signals to controllers ...