It’s hard work being a werewolf, and I don’t just mean cleaning blood stains out of the carpet or dealing with fleas in the house.

It’s this messy business of the full Moon. Most wall calendars and news sources, if they even mention Moon phases, there’s about a 50/50 chance that they’re off by a full day (explained on the “Moon Facts” page). You might be out at a fancy event wearing a rental tuxedo when things turn weird. There goes your deposit. So awkward.

The only way to get a correct Moon phase for your time and location is with math and science. Our Matrix Portal Moon phase clock lets you know where things stand right here and now, portraying the Moon’s phase more accurately than a printed calendar, and whether it’s currently in the sky or has set.

So now you can prepare. No tux! Stay home and put on a comfortable flannel shirt like werewolves do.

This project requires:

  • Adafruit Matrix Portal M4 board
  • Any of our 64x32 pixel “HUB75” (not NeoPixel) RGB LED matrices (other sizes are not supported by this code)
  • USB C cable
  • USB power supply with output of 2 Amps or more
  • WiFi internet access
  • An insatiable hunger for human flesh

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.

Next we’ll connect the Matrix Portal board and LED matrix. Do not over-tighten the screws on the power terminals or they can shear off. This is best done in human form.

Parts

Adafruit Matrix Portal - CircuitPython Powered Internet Display

PRODUCT ID: 4745
Folks love our wide selection of RGB matrices and accessories, for making custom colorful LED displays... and our RGB Matrix Shields...

USB Type A to Type C Cable - approx 1 meter / 3 ft long

PRODUCT ID: 4474
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...

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

Official Raspberry Pi Power Supply 5.1V 3A with USB C

PRODUCT ID: 4298
The official Raspberry Pi USB-C power supply is here! And of course, we have 'em in classic Adafruit black! Super fast with just the right amount of cable length to get your Pi 4...

5V 2.5A Switching Power Supply with 20AWG MicroUSB Cable

PRODUCT ID: 1995
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 power...

Micro B USB to USB C Adapter

PRODUCT ID: 4299
As technology changes and adapts, so does Adafruit, and speaking of adapting, this adapter has a Micro B USB jack and a USB C...

If you'd like your LEDs diffused, some acrylic may help

Black LED Diffusion Acrylic Panel 12" x 12" - 0.1" / 2.6mm thick

PRODUCT ID: 4594
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...

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.

64x32 RGB LED Matrix - 3mm pitch

PRODUCT ID: 2279
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...

64x32 RGB LED Matrix - 4mm pitch

PRODUCT ID: 2278
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...

64x32 RGB LED Matrix - 5mm pitch

PRODUCT ID: 2277
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...

64x32 RGB LED Matrix - 6mm pitch

PRODUCT ID: 2276
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...

64x32 Flexible RGB LED Matrix - 4mm Pitch

PRODUCT ID: 3826
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...

64x32 Flexible RGB LED Matrix - 5mm Pitch

PRODUCT ID: 3803
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...
This guide was first published on Sep 23, 2020. It was last updated on Sep 23, 2020.
This page (Overview) was last updated on Oct 31, 2020.