A blue-cased 32x8 matrix showing HELLO in blue LEDs above the teal box printed 32X8 MAX7219 DOT MATRIX LED DISPLAY, with a red and a green module standing beside it showing the same word, and the loose pin headers below.

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32x8 LED Matrix MAX7219, 3-Pack

Four 8x8 squares in one strip, 256 LEDs, three signal wires. What the pads are called, why the sketch has to say four, and what to do about a 3.3 V board on a chip that wants 3.5 V.

In the box: 3boards
Pixels: 32 × 8per board
Signal wires: 3DIN CLK CS
Supply: 5V

Start here · 01 Four squares in a row The reference

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The whole handbook10 articles · 45 min DatasheetPDF · cdn-shop.adafruit.com Pinout and specsThe pin table, and the questions people ask first

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32x8 LED Matrix MAX7219, 3-Pack

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32x8 LED Matrix MAX7219, 3-Pack

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Take it with you

Point a phone camera at the code and this page opens there. It is the same address as the one printed on your box, so it is also what to show someone you are passing the board to.