ElecFreaks
1 Channel Relay 3V Relay Module for Micro:bit
A single-channel 3 V relay module from the ElecFreaks OCTOPUS series, designed for use with the BBC micro:bit. It uses a high-quality HUIKE relay capable of ...
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A single-channel 3 V relay module from the ElecFreaks OCTOPUS series, designed for use with the BBC micro:bit. It uses a high-quality HUIKE relay capable of switching loads up to 30 A, making it suitable for controlling home appliances and other high-current devices.
The module runs on 3 V power, which the micro:bit can supply directly. It connects via a standard OCTOPUS electric brick connector and includes both normally open (NO) and normally closed (NC) contacts.
Key Features
- Channels – 1
- Operating Voltage – 3 V (micro:bit compatible)
- Max Switching Current – 30 A
- Contact Type – Normally open (NO) and normally closed (NC)
- Connector – OCTOPUS electric brick connector
- Series – ElecFreaks OCTOPUS
Getting Started
- Connect the relay module to P1 on an octopus:bit breakout board using a jumper cable
- Insert the micro:bit into the edge slot of the octopus:bit
- Set P1 to high to close the normally open contact (and open the normally closed contact)
Ideal For
- BBC micro:bit projects requiring relay switching
- Controlling lights, motors, and other high-current loads
- Educational electronics and home automation experiments
Package Contents
- 1× Single-channel 3 V relay module
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- Relay module
- A relay module uses an electrically controlled switch to let a low-power microcontroller control a separate circuit. It matters when switching devices that need different voltages or more current than a microcontroller pin can safely handle.
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