Seems like every great monster film sets off a chain of sequels. Bride of…, Son of…, Revenge of…, Teen Wolf Too (hey, they can’t all be winners).

Our electronic eyeball projects have spawned their own little franchise, with Pi Eyes, HalloWing, Monster M4SK and more. The arrival of the Matrix Portal M4 board made another sequel inevitable — this time a retro-style return to form of our first project of the series, but punching it up with bright colors, full-screen themes, and coded all in CircuitPython now.

This makes a nifty Halloween window or tabletop display. And it’s a not-too-daunting introduction to CircuitPython and graphics. When the Halloween season’s over…if you don’t keep the decorations up year ’round like some of us…everything can be repurposed into your own projects, or try out some others like a Moon phase clock.

This project requires:

  • Adafruit Matrix Portal M4 board
  • Any of our 64x32 pixel “HUB75” (not NeoPixel) RGB LED matrices
  • USB C cable
  • USB power supply with output of 2 Amps or more

This guide will get the software running on the bare Matrix Portal hardware. Mounting or supporting the clock in an enclosure or frame is left as an exercise to the reader.

Parts

Video of a person rotating an LED matrix panel with animation resembling falling colored sand.
Folks love our wide selection of RGB matrices and accessories, for making custom colorful LED displays... and our RGB Matrix Shields...
Out of Stock

You can use a USB C power supply or a USB micro B with a micro B to C adapter

USB Type A to Type C Cable - approx 1 meter / 3 ft long
As technology changes and adapts, so does Adafruit. This  USB Type A to Type C cable will help you with the transition to USB C, even if you're still...
$4.95
In Stock
Angled shot of Official Raspberry Pi Power Supply 5.1V 3A with USB C with Power plug facing down.
The official Raspberry Pi USB-C power supply is here! And of course, we have 'em in classic Adafruit black! Superfast with just the right amount of cable length to get your Pi 4...
$7.95
In Stock
5V 2.5A Switching Power Supply with 20AWG MicroUSB Cable
Our all-in-one 5V 2.5 Amp + MicroUSB cable power adapter is the perfect choice for powering single-board computers like Raspberry Pi, BeagleBone, or anything else that's...
$8.25
In Stock
Angled shot of Micro B USB to USB C Adapter.
As technology changes and adapts, so does Adafruit, and speaking of adapting, this adapter has a Micro B USB jack and a USB C...
$1.25
In Stock

If you'd like your LEDs diffused (and if your LED matrix is 4mm pitch or smaller), some acrylic may help:

LED RGB matrix 12" x 12" with "Adafruit Industries LED Matrix" text showing, and LED acrylic slowly covering to make it nicely diffused
A nice whoppin' slab of some lovely black acrylic to add some extra diffusion to your LED Matrix project. This material is 2.6mm (0.1") thick and is made of special cast...
$9.95
In Stock

Adafruit carries a number of 64x32 RGB LED Matrices, varying between the space between LEDs (pitch) and whether rigid or flexible. Choose your favorite - larger pitch means the display is larger, width and height-wise but with the same number of pixels, and larger may be easier to read further away. Smaller for near your desk, for example.

Two white hands hold out an assembled and powered on 64x32 RGB LED Matrix Panel - 3mm pitch. The matrix displays "Adafruit Industries LED MATRIX! 32x64 *RGB*"
Bring a little bit of Times Square into your home with this sweet 64 x 32 square RGB LED matrix panel. These panels are normally used to make video walls, here in New York we see them...
$44.95
In Stock
Vide of assembled and powered on 64x32 RGB LED Matrix Panel - 4mm pitch. The matrix displays "Black Lives Matter" alongside the Raised Fist.
Bring a little bit of Times Square into your home with this sweet 64 x 32 square RGB LED matrix panel. These panels are normally used to make video walls, here in New York we see them...
$39.95
In Stock
Two white hands hold out an assembled and powered on 64x32 RGB LED Matrix Panel - 5mm pitch. The matrix displays "Adafruit Industries LED MATRIX! 32x64 *RGB*"
Bring a little bit of Times Square into your home with this sweet 64x32 square RGB LED matrix panel. These panels are normally used to make video walls, here in New York we see them on...
$49.95
In Stock
Two white hands hold out an assembled and powered on 64x32 RGB LED Matrix Panel - 6mm pitch. The matrix displays "Adafruit Industries LED MATRIX! 32x64 *RGB*"
Bring a little bit of Times Square into your home with this sweet 64x32 square RGB LED matrix panel. These panels are normally used to make video walls, here in New York we see them on...
Out of Stock
Video of woman in a white sleeveless t-shirt holding and slightly bending a black flexible 64x32 RGB LED Matrix. The LED matrix is lit up with rainbow LEDs with the text: Adafruit Industries LED Matrix 32x64 *RGB*.
If you've played with multiplexed RGB matrices, you may have wondered "hey, could we possibly manufacture these on a thin enough PCB, so it's flexible?" and the...
$44.95
In Stock
Two hands flexing a powered on 64x32 Flexible RGB LED Matrix - 5mm Pitch.
If you've played with multiplexed RGB matrices, you may have wondered "hey, could we possibly manufacture these on a thin enough PCB so it's flexible?" and the answer...
$79.95
In Stock

This guide was first published on Sep 26, 2020. It was last updated on Sep 26, 2020.

This page (Overview) was last updated on Aug 07, 2022.

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