The photoresistor sensor module includes a LDR (light-dependant resistor) in series with a 10K resistor. The AO pin is connected between the LDR and the 10K resistor. The voltage on the AO pin depends ...

A model of a utopian traffic system was designed using Arduino as the microcontroller, LDR, LM393 sound detection sensor module and HW-201 1R sensor. - ej1m/Autonomous-infrared-based-traffic-manage ...