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4-Digit Display
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A simple 4-digit LED display module with a 2-wire serial interface (CLK and DIO), making it easy to add numeric readouts to micro:bit, Arduino, and other mic...
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A simple 4-digit LED display module with a 2-wire serial interface (CLK and DIO), making it easy to add numeric readouts to micro:bit, Arduino, and other microcontroller projects. The module operates at 3.3V or 5V and requires just four connections: CLK, DIO, VCC, and GND.
Key Features
- 4-Digit LED Display – Clear numeric readout for counters, timers, and sensor values
- 2-Wire Serial Interface – CLK and DIO pins for simple communication
- 3.3V / 5V Compatible – Works with micro:bit, Arduino, and other common boards
- Easy Wiring – Only 4 pins: CLK, DIO, VCC, and GND
Pinout
- CLK – Clock input
- DIO – Serial data input/output
- VCC – 3.3V or 5V power supply
- GND – Ground
Ideal For
- micro:bit projects and classroom activities
- Counters, timers, and scoreboards
- Temperature and sensor readouts
- Arduino and general microcontroller projects
Package Contents
- 1× 4-Digit LED Display Module
Jargon buster
Plain-language definitions for the technical terms used above.
- CLK
- CLK is the clock signal that times when SPI data bits are sent and read. A display needs this pin connected correctly so the controller and screen stay in step while data is transferred.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
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Project Guides
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Related Tutorials
Free guides on learn.littlebird.com.au
