LED Hula Hoop

LED Hula Hoop. Supports simple algorithm-based patterns, as well as (some) Hyperion patterns. Note: I haven't looked at this in forever, and prioritized it working over cleanliness, so yeah...

Contents

• ./src/BMP: console program to convert BMP images to the bit array required to hardcode Hyperion patterns into the hoop. This also served as a way to debug the arduino code as the C# is almost copy-pastable to C++.
• ./src/hoop: arduino program that powers the hoop

Usage

cd src/BMP
dotnet run -- hello 4

• the above converts an image called ./patterns/hello.bmp to a pattern, with a magic number of 4 that determines how much to compress colors for smaller pattern sizes
• ./patterns needs to contain BMP images. Hyperion images can be found here. You'll have the best of luck with small images with few colors.

Schematics

This schematic has a JST connection for charging.

This schematic has a Micro-USB connection for charging.

Optionally, one can wire a button to BUTTON_PIN on the trinket (currently pin 2) to manually change patterns. By default, the hoop runs some patterns in a loop.

Electronics

• Adafruit Trinket
• LEDs
• battery
• JST charger
• USB charger