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Frowney

8x8 LED matrix + Arduino Pro Micro

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This is a toy that I made to learn to use those LED matrices. I had one 8x8 matrix lying around, and one day I noticed that its pins match perfectly the pins of a Pro Micro Arduino board... So I just had to put the two together. I still had two pins left (TX and RX), so I added
two buttons to them, so that you can change the images being displayed.

The pins are exactly the right pitch and locations, but you also need to put resistors on half of them, so I cut those pins a little shorter and added SMD resistors, which happen to be exactly as long as the pins.

I also had to unsolder all the LEDs from the board itself.

Even though I removed the LED from pin 15, the corresponding column is still a little bit dimmer than the others, I wonder if there is something I can do about it. (Turns out it was a bad soldering joint.)

  • 1 × 8x8 green LED matrix
  • 1 × Arduino Pro Micro
  • 2 × Pushbuttons
  • 1 × Power Switch
  • 1 × LiPo Battery

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  • Snaaaakeeee

    deʃhipu07/30/2015 at 11:34 0 comments

    After a quick poll about which game to implement, I decided to make Snake. It's a good old classic from the Nokia phones, where you control snake that grows with every dot it eats. Perfect for a low-resolution monochrome screen and two buttons.

    After a bit of coding, I came up with a more or less functional game:

    Read more »

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