Overview

Build a protest/demonstration sign that can be seen at night. This project makes it simple to use your own graphics on the sign -- it's as easy as dragging and dropping .bmp image files into a folder.

CircuitPython running on the Feather M4 with the RGB Matrix FeatherWing drives any of our RGB LED matrix panels.

You can use the large 6mm pitch version and 3D print the provided brackets to hold LED diffusing plastic. Screw a yardstick or other thin strip of wood to the panel and you can go out and march.

Parts

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...
$84.95
IN STOCK

Adafruit Feather M4 Express - Featuring ATSAMD51

PRODUCT ID: 3857
It's what you've been waiting for, the Feather M4 Express featuring ATSAMD51. This Feather is fast like a swift, smart like an owl, strong like a ox-bird (it's half ox,...
$22.95
IN STOCK

Adafruit RGB Matrix Featherwing Kit - For M0 and M4 Feathers

PRODUCT ID: 3036
Ahoy! It's time to create a dazzling light up project with our new RGB Matrix FeatherWing. Now you can quickly and easily create...
$7.50
IN STOCK

8 x AA battery holder with 5.5mm/2.1mm Plug and On/Off Switch

PRODUCT ID: 875
Make a portable power brick with plenty of juice! Use Alkaline AA's for a 12V 3000-4000mAh power supply, or rechargeable NiMH for 2000mAh 9.6V supply. Either one is good for running...
$5.95
IN STOCK

UBEC DC/DC Step-Down (Buck) Converter - 5V @ 3A output

PRODUCT ID: 1385
Your power supply problems just got SOLVED! This little circuit board may look tiny but inside is a high efficiency DC/DC step-down converter which can output up to 3 Amp at 5V without...
$9.95
IN STOCK

Panel Mount 2.1mm DC barrel jack

PRODUCT ID: 610
This power jack is designed to easily attach to a panel up to 8mm thick (0.315" or 5/16") and fit 2.1mm power plugs snugly and securely. Perfect for adding a power connector...
$2.95
IN STOCK

5.5 / 2.1mm Barrel Connector - DC Power Plug

PRODUCT ID: 3310
DIY? How about D-I-Wire! This barrel jack plug is great for adding a common power connector to the end of your wires. The jack is compatible with 5.5mm barrel jacks that have a...
$0.95
IN STOCK

Heat Shrink Pack

PRODUCT ID: 344
Heat shrink is the duct tape of electronics, it keeps your stuff all safe and kept together. Especially when wiring and soldering, use heat shrink to add mechanical strength to cables....
$4.95
IN STOCK

Black Nylon Screw and Stand-off Set – M2.5 Thread

PRODUCT ID: 3299
Totaling 380 pieces, this M2.5 Screw Set is a must-have for your workstation. You'll have enough screws, nuts, and hex standoffs to fuel your maker...
$16.95
IN STOCK

Additional Materials

In addition to the parts above, you'll need:

  • 8 ea. AA NiMH rechargeable batteries
  • A length of 2" x 1/4" wood for a handle, such as a yard stick
  • 6 ea. M3 x 8mm screws for securing the brackets (these can be the typical Phillips head, but I really like hex drive screws)
  • 2 ea. M3 x 12mm screws for attaching the handle
  • Sheet of diffusing acrylic 385mm x 190mm x 3mm such as Chemcast Black LED Acrylic
  • Velcro or double stick foam tape to secure the battery holder
  • Zip ties

3D Printing

For the brackets and Feather cover, you'll need access to a 3D printer and some PLA or similar filament.

Tools

You'll need:

  • screwdriver
  • soldering iron and solder
  • wire strippers
  • hand drill
This guide was first published on Jun 23, 2020. It was last updated on Jun 23, 2020.
This page (Overview) was last updated on Jul 15, 2020.