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Led Matrix with Raspberry Pi Interface @RaspberryPi #piday #raspberrypi

Led matrix graphical user interface on the RaspberryPi from Frédérick Blais:

Yesterday, I plugged into my Raspberry Pi a little i2c LED Matrix. I wrote Python class to interact with it but I thought it would be really interesting to toggle the matrix’s LED with a graphical user interface on the Pi itself. This is exactly what I done and you can take a look at the result in the following Youtube video.

To connections between the matrix and the Pi are really simple, you just need to connect 4 signals directly together : GND, 3V3, DATA and CLK. There is no need for pull-up resistor on the i2c clock and data lines, I presume the Pi already have them. The display is designed for 5V but it works really well at 3.3V.

Check out Frédérick’s blog for source code and more!


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1 Comment

  1. Thanks for sharing my blog 🙂 I’m glad you like it! If someone is interested, I added 8×8 fonts to the driver and you can display text messages. Scrolling coming soon!

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