We spy with our little eyes, our 1.2″ 8×8 matrix in blue!
Below is some information on how to get an 8×8 led matrix working on your Raspberry Pi using C.
I have also included the code needed to get text scrolling.
The matrix I am using is this one from Adafruit. This matrix uses a HT16K33 controller chip and communicates with the Pi via the i2c bus.
- Scan the i2c bus for your device.
- Download the code needed.
Featured Adafruit Product!
Adafruit Small 1.2″ 8×8 LED Matrix w/I2C Backpack – Blue: What’s better than a single LED? Lots of LEDs! A fun way to make a small display is to use an 8×8 matrix or a 4-digit 7-segment display. Matrices like these are ‘multiplexed’ – so to control 64 LEDs you need 16 pins. That’s a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you but there’s a lot of wiring to set up and they take up a ton of space. Here at Adafruit we feel your pain! After all, wouldn’t it be awesome if you could control a matrix without tons of wiring? That’s where these lovely LED matrix backpacks come in. We have them in three flavors – a mini 0.7″ 8×8, a small 1.2″ 8×8 and a 4-digit 0.56″ 7-segment. They work perfectly with the matrices we stock in the Adafruit shop and make adding a bright little display trivial. (read more)
Each Friday is PiDay here at Adafruit, be sure to check out our posts, tutorials and new Raspberry Pi related products. Have you tried the new “Adafruit Raspberry Pi Educational Linux Distro” ? It’s our tweaked distribution for teaching electronics using the Raspberry Pi. But wait, there’s more! Try our new Raspberry Pi WebIDE! The easiest way to learn programming on a Raspberry Pi.
We now have Raspberry Pi Model B with 512MB RAM in stock and shipping now!
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Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Toys R Us will have Raspberry Pi ?
Wearables — Foam to leather
Electronics — Proceed with caution
Biohacking — Machine Learning and Ketosis
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