Sensor S8X3A receiver (1) and S8X3B transmitter (2) should be inline and in the center of diabolo. Make sure that on both transmitter and receiver 1mm slits are mounted. Set sensor to “Dark”
Put this potentiometer in Dark on ''D''
The second potentiometer is responsible for adjusting the sensor's sensitivity. Ensure that when something passes between the emitter and receiver, the green light stays on at all times, and only the orange light flashes intermittently for each object passing through the laser beam. Use a small screwdriver to make this adjustment until you achieve the correct result.
The potentiometer does not have a specific position. Manually place the rim inside the machine and rotate it by hand to check if the potentiometer adjustment is achieving its purpose, ensuring the green light stays on at all times and the orange light only flashes when the spokes pass in front of the sensor