Adafruit
Quad Alphanumeric Display - Pure Green 0.54 Digits w/ Backpack
Display, elegantly, 012345678 or 9! Gaze, hypnotized, at ABCDEFGHIJKLM - well it can display the whole alphabet. You get the point. This is a nice, bright...
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Display, elegantly, 012345678 or 9! Gaze, hypnotized, at ABCDEFGHIJKLM - well it can display the whole alphabet. You get the point. This is a nice, bright alphanumeric display that shows letters and numbers in a beautiful pure green hue. It's super bright and designed for viewing from distances up to 23 feet (7 meters) away. Digits have seven green segments on a black surface and we give you a set of two alphanumeric displays as well as a driver board so you can make a clock or a four letter word.
Like our other LED backpacks, these are end-to-end stackable and by soldering the address jumpers on the back you can have up to 8 backpacks all sharing the same two I2C wires!
This product comes with:
- 2 x Ultra-Bright Pure Green Alphanumeric Display - 0.54" Digit Height for 4 digits total
- 1 x Adafruit 14-segment LED Alphanumeric Backpack
- 1 x 5-pin header
A bit of soldering is required to attach the matrix onto the backpack but its very easy to do and only takes about 5 minutes. Of course, in classic Adafruit fashion, we also have a detailed tutorial showing you how to solder, wire and control the display. If you've been eying alphanumeric displays but hesitated because of the complexity, this is the solution you've been looking for!
Click here for the version that's just the alphanumeric displays! (no backpack)
Jargon buster
Plain-language definitions for the technical terms used above.
- Address jumpers
- Address jumpers are small solder pads, links or switches used to change a device's address on a shared bus such as I2C. They matter when you want to connect several identical devices to the same controller, since each one needs a unique address to avoid conflicts.
- 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 (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
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adafruit led backpack
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