I made some arduino-powered ghosts to put in my windows
- 1x Adafruit Metro Mini -- Compatible with Arduino Uno; any Arduino could be used but might require pin changes.
- 2x 8x8 LED Matrix with I2C Backpack -- Comes in multiple colors, but the blue can be hard to resolve from a distance.
- Requires the Adafruit LED Backpack and Adafruit GFX libraries from the Arduino library manager
- See this tutorial for assembling the backpack.
- Common Cathode LEDs -- Could be replaced with single-color LEDs. I use about six per ghost.
- Weatherproof Enclosure
- Push Button - Fits in one of the enclosure's openings with a little bit of reaming
- Jumper cables
- Male headers
- Protoboard
The inset shapes are not sized to account for cutting kerf, so you will have to handle that. The service I used for cutting, Send Cut Send does it for you, but other services may not.
Each eye needs four out pins. The eyes are not individually controlled
- I2C pins (A4 and A5 on Uno-compatible boards)
- 5V pin
- Ground pin
The backlight uses four out pins:
- Red on pin 6
- Green on pin 9
- Blue on pin 10
- Ground
The push button to change the backlight color uses pins 7 and 8