Learn — Light sensor Module

In this article, we will guide you on making a robot car that can follow a line. We will be using the parts that we carry in our shop.  We will be using CAROBOT Motor Driver and Servo Shield to make connected Motors to Arduino UNO. The shield separate the Uno's PWM digital pins (3,5,6,9,10,11) and the non-PWM digital pins (2,4,7,8,12,13) for easy identification. Furthermore, it provides a 5V and GND rail for easy connections. The Motor and Shield shield is equipped with an L298N H-Bridge Motor Driver. This allows the shield to drive two DC motors.  We will also be using...

The light sensor is a photoresist, which is also known as a light-dependent resistor or photocell. It is used not only to detect light but also to measure the brightness or illuminance level of the ambient light. It has a wide range of applications, such as measuring the brightness of ambient light and controlling the lights turning on and off. How it works The more light the photoresist’s face is exposed to, the smaller its resistance is. Therefore, we know how bright the ambient light is by measuring the photoresistor’s resistance.  In this article, we'll talk about the setup and wiring...

The Photodiode Module can be used for measuring brightness and ambient light intensity and is often used in robotics application. Compared to a photo-resistor, photodiode is better in directionality. Therefore, photodiode is better suited when searching for a light source whereas photoresistor is better for generic light intensity measurement. Wiring  The photodiode module operates at 3.3V to 5V, and the digital output pin gives out a HIGH or LOW signal depending on the light intensity level. When ambient light intensity does not reach the threshold value, the "D0" port outputs a high lever; When the ambient light intensity exceeds a set threshold, the "D0" outputs a...