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Light sensor Dark sensor. Light and dark detection using an LDR. For this project, let’s stick to the LDR sensor module so we can select the light or dark detection by placing jumpers. We’ll be using ...

Code Explanation: Complete Arduino Code and Demonstration Video is given at the end of this project. Here, we are defining the Pins for Relay, LED and LDR. #define relay 10 int LED = 9; int LDR = A0; ...

Learn to create a simple light-following robot using Arduino, LDR sensors, ... Arduino UNO R3 x1. LDR Sensor Module x2. 2WD- Two Wheel Drive Robot Car kit ... This logic ensures that the robot ...

The circuit of Arduino-based shadow alarm is shown in Fig. 1. It consists of an Arduino board, power supply, light-dependent resistor (LDR) sensor, buzzer, relay driver and a few other components.

The massive quantity of electricity gets used in lights through roadways in India. Still, roadways remain empty for nearly all of the day after at night, with a handful of cars passing during the ...