Write an Android app to control an LED light shirt. The app communicates to an ATmega128 via a BlueSMiRF Bluetooth transceiver. The microcontroller outputs data on the SPI to daisy-chained shift-register-controlled constant-current regulators driving RGB LEDs.

Project Steps

Solder LED Pixels in a daisy-chain, making sure wires are correctly ordered.

Create micro-controller interface board and write embedded frame buffer code similar to code supplied by Bliptronics here:http://bliptronics.com/projects/LEDArdui…

Multiple battery inputs (top right connectors) to extend battery life

Multiple power outputs (top left connectors) to reduce line losses along LED daisy-chain

High current rated LDO Linear Regulator (and heat sink)

BlueSMiRF Silver for Android connectivity

Single data output (far left connector)

Data lines to micro-controller board (i.e. Arduino) [Blue wires] for SPI and UART lines

Hard reset button

Develop Android App

Create tabbed layout with activities to set parameters for different patterns. The ‘set’ button the sends command over bluetooth

Color picker by:http://code.google.com/p/android-color-p…

Bluetooth from Android Bluetooth Chat example: http://developer.android.com/resources/s…

Vertical Seekbar by Neil D here:http://stackoverflow.com/questions/63123…

Sew LEDs into garment.

Just a word of caution that I was never able to get the BlueSmirf to consistently send data to the Android, only from the Android to the BlueSmirf. I forget, but you may also need to change the BUAD rate of the BlueSmirf which you can read how to due in the RN-42 AT Command Set.


Be sure to check out the video demo here:http://www.youtube.com/watch?v=DcY8FnuDO...