Laser Module

Introduction

The core component of the laser module is a laser diode, which is a semiconductor device capable of directly converting electrical energy into laser light energy.
Compared to traditional light sources, laser characteristics come from its unique emission and generation process: When current flows through the laser diode, electrons undergo transitions under specific conditions to release photons. These photons reflect within the medium, exciting more electron transitions, producing a light amplification effect, and forming a highly concentrated laser.

Specifications

Item	Description
Name	Laser Module
Code	B0020004
Dimension	28×24×20 mm
Voltage	5V－DC
Control Signal	Digital Signal / Analog Signal
Light Source Wavelength	650 nｍ
Ports	Grove

Usage

Side View	Front View	Side View
Laser Module Connection Diagram

The laser module can be connected to the micro:bit smart hub’s interfaces: P0, P1, P2, P8, P12, and P16.

When controlling the laser module with a digital signal, a high input voltage turns the laser module on, while a low input voltage turns it off.
When controlling the laser module with an analog signal, the greater the input signal, the brighter the laser module; the smaller the input signal, the dimmer the LED light.

Note: Do not aim the laser at the eyes during use, as it may cause permanent eye damage!

Modular Coding

In the MakeCode coding software, by adding the micro:bit extension, you can program the laser module to blink, and use the “+” block to adjust the laser’s power.