In Experimento | 10+, the pH value of beverages experiment, for example, is suitable for acquiring measured values digitally using the Arduino board. A pH sensor can be connected to the Arduino UNO, and a conventional pH electrode can be attached to the sensor. Once the sensor is calibrated, a corresponding program code is loaded onto the Arduino board. In the process, it becomes clear that the pH value itself is not being recorded during a pH value measurement; rather, the pH electrode provides voltage values to the Arduino board, which then must convert the voltage values to pH values in the program.

You can download the student and teacher instructions for measuring pH values using the Arduino board.