Circuit Schematic Arduino Light Sensor and Piezo Buzzer Experiment

Arduino. - Here is Circuit Schematic Arduino Light Sensor and Piezo Buzzer Experiment. In this experiment we are going to work with a sensor which is a resistor that depends on light. In a dark environment, the resistor will have a very high resistance. As photons (light) land on the detector, the resistance will decrease. The more light is we will have a lower resistance. By reading different values from the sensor, we can detect if is it light , dark or a value between them. Another element that we are going to use on this experiment is Piezo Buzzer.

Circuit Schematic Arduino Light Sensor and Piezo Buzzer Experiment
(Source:www.electroschematics.com)

Our schematic consists on 3 elements which are: Photoresistor (LDR), Piezo Buzzer, 1 – 10 kΩ. The LDR can be connected any way you want because doesn’t have polarity. For resistance you can use from 1-10 KΩ because different LDR have different settings. Try different values of resistor to fit the best settings with your LDR.

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