SunFounder Phototransistor Light Follower Module

The module uses three 3DU5C phototransistors that change their conductivity based on the amount of light they receive. This change is converted into a voltage signal, which your microcontroller's analog-to-digital converter can then read to interpret luminance levels.

Yes, the board includes an onboard potentiometer that allows you to manually tune the sensitivity. This is helpful for calibrating the module to work reliably in different lighting environments, from dim rooms to bright areas.

The LEDs provide immediate visual feedback by illuminating based on the light intensity detected by the sensors. They act as a quick diagnostic tool to confirm the module is working and to help you visualize how the sensors are responding to your environment.

Yes, the module is designed to operate on a 5V power supply. It is compatible with most standard microcontrollers, such as Arduino, that support 5V logic and analog input pins.

This module is specifically designed for light-following robotics and sensing applications. Its three-channel configuration allows a robot to detect the direction of a light source, making it ideal for building light-tracking vehicles or automated solar-tracking systems.