Raspberry Pi Potentiometer Wiring Diagram. In summary we basically use r1 and the potentiometer to charge the circuit together and r2 to discharge the circuit which is then read by the python code to give us the values for the step response change with time. Servo motors have three wires ground signal and power.
Hook up wire httpsadafruitam5 a raspberry pi httpsadafruitdbf compatible with all 26pin and 40pin pi. Replace the button in your circuit with a potentiometer. In summary we basically use r1 and the potentiometer to charge the circuit together and r2 to discharge the circuit which is then read by the python code to give us the values for the step response change with time.
Next wire up the contrast potentiometer as shown above with the middle pin.
The charge voltage voltage is supplied by the raspberry pi gpio 18 this is limited to reading variable resistance values from a pot photo resistor or thermister etc. Potentiometer connected using an led into the pico. A pi cobbler breakout. If you are using multiple buttons then it is often best to use a common groundto avoid connecting too many jumper leads to gndpins.