Photosensitive Sensor

Principle

The Photosensitive Sensor is a device that converts light signals into electrical signals using a photosensitive element. In this sensor, there is an inverse relationship between the light intensity and the returned value: the stronger the light, the smaller the returned value; the weaker the light, the larger the returned value.

Specifications

Item	Description
Name	Photosensitive Sensor
Code	B0020013
Dimension	28×24×12 mm
Voltage	5V - DC
Ports	Grove
Data Type	Analog Signal
Data Range	0~1023 (Bright ~ Dark)

Usage

Side View	Front View	Side View
Photosensitive Sensor Connection Diagram

The photosensitive sensor can be connected to the P0, P1, and P2 interfaces of the micro:bit smart hub. In the coding environment, users can read the analog values from the sensor. Its characteristic is that the stronger the light, the higher the value output by the sensor; conversely, in a darker environment, the sensor’s output value decreases.

Modular Coding

In the MakeCode coding software, the sensor signal value from the P0 port can be read using the micro:bit extension. The data can then be visualized on the micro:bit’s LED matrix.