This approach uses (at least) 3 LDR's between the rails and all are used for detection purposes. The ambient light they see does not need to be constant but should affect them all more or less ...
This approach uses (at least) 3 LDR's between the rails and all are used for detection purposes. The ambient light they see does not need to be constant but should affect them all more or less ...
Light sensors are widely used in electronic applications. The most common one used is a photoresistor or light-dependent resistor. Despite a long response time, this sensor is inexpensive and useful ...
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