In this circuit, we are making a Light Sensor using LDR with Arduino to control a bulb/CFL as per light condition ... material is popular and it is cadmium sulfide (CdS). These LDRs or PHOTO RESISTORS ...

The circuit of Arduino-based shadow alarm is shown in Fig ... in case the mains power supply system is tampered with by intruders. Shadow sensor is nothing but a photo resistor, commonly called ...

Circuits are being implemented with the help of Arduino IDE and being simulated by TInkercad from ... It utilizes an ultrasonic sensor to measure distance and triggers an alarm when an object or ...

If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor/water pump controller that lights an LED to alert the user when it is time to water a potted ...

I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...