3D Printed LED Bracelet With Motion Sensor

This project started when I printed Diagrid Bracelet by nervoussystem and got the idea to add some LEDs to it. I designed the model using123D Design. An Adafruit trinket (Attiny85) is controlling a Neopixel 144 LED/m strip and reading value from a FLORA Accelerometer/Compass Sensor (LSM303) using I2C.

Blog: http://www.slickstreamer.info/search/label/bracelet

Step 1: What You Need

Hardware

• Trinket - 3.3V Logic
  
• 144 LED/M Neopixel strip
• Smal battery (~110 mAh)
• Neodymium magnets (3 mm)
• FLORA Accelerometer/Compass Sensor - LSM303

Tooles

• 3D printer
• Soldering iron

Software

• Arduino
• NeoPixel
• TinyWireM
• Tiny303
• LED-bracelet

Step 2: Model

Download the files from Thingivers http://www.thingiverse.com/thing:248567

I printed it on a Form 1 using white resin.

Print the model and glue the magnet.

Step 3: Electronics

• Trinket - 3.3V Logic
• 144 LED/M Neopixel strip
• Smal battery (~110 mAh)
• Neodymium magnets (3 mm)
• FLORA Accelerometer/Compass Sensor - LSM303

Connect the led stripe to D1 to one of the trinkets pins, I use pin 1, and connect +5v to the battery positiv and GRD to negativ. To connect the accelerometer use pin 0 for SDA and pin 2 for SCL.

Step 4: Code

Software

• Arduino
• NeoPixel
  
• TinyWireM
• Tiny303
  
• LED-bracelet

Step 5: Party!

All blogpost about the build http://www.slickstreamer.info/search/label/bracele...