Adafruit
Quad Alphanumeric Display - 0.54 Digits w/ I2C Backpack - Blue
A four-digit 0.54-inch blue alphanumeric LED display with an I2C backpack. Each digit has 14 segments, allowing it to display letters, numbers, and basic sym...
A four-digit 0.54-inch blue alphanumeric LED display with an I2C backpack. Each digit has 14 segments, allowing it to display letters, numbers, and basic symbols. The bright blue LEDs on a black surface are readable from up to 7 metres (23 feet) away.
The I2C backpack simplifies wiring to just two data pins. Multiple backpacks can be daisy-chained on the same I2C bus — solder the address jumpers on the back to set up to 8 unique addresses. A small amount of soldering is required to attach the displays to the backpack (about 5 minutes).
Key Features
- 14-Segment Alphanumeric – Displays full alphabet, numbers, and basic symbols
- Bright Blue LEDs – Readable up to 7 metres away
- I2C Interface – Only two data pins required
- Stackable – Chain up to 8 backpacks on a shared I2C bus
- 0.54" Digit Height – Compact yet legible
Package Contents
- 2× Blue alphanumeric displays (0.54" digit height, 2 digits each)
- 1× Adafruit 14-segment LED alphanumeric backpack
- 1× 5-pin header
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Address jumpers
- Address jumpers are small solder pads or links used to change a device’s bus address. They matter when you want to connect multiple identical displays to the same controller without their addresses conflicting.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- 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.
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Displays & Screens
Related Tutorials
Free guides on learn.littlebird.com.au
