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firmware and a processing library for seeedstudios rainbowduino
Java C Shell
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Info ---- Some of the neorainbowduino v0.8 features: Multiple Rainbowduinos supported via i2c protocol -Running fast and stable, you need about 20ms are needed to send a frame from Processing/Java to an Rainbowduino matrix -A Processing library, so you can easily control your Rainbowduino from Processing! Check http://www.neophob.com/neorainbowduino for a description of the library. -Send frames from Processing to your RGB matrix, each frame has a size of 8x8 pixel, 12bit color resolution (4096 colors). The color conversion is handled by the library -Optimized processing lib - send only frames to Rainbowduino if needed (save ~50% of traffic - of course it depends on your frames) -Fixed buffer swapping (no more flickering) -Check if Arduino is ready (ping arduino) -Added i2c bus scanner, find your Rainbowduinos if you forget their addresses More information: -http://www.neophob.com/2010/09/neorainbowduino-processing-library -http://www.neophob.com/2010/07/rainbowduino-fun-aka-neorainbowduino -http://garden.seeedstudio.com/index.php?title=Rainbowduino_LED_driver_platform_-_Atmega_328 Installation Needed libraries -FlexiTimer (http://github.com/wimleers/flexitimer2) Libraries to patch Wire (TWI/I2C): utility/twi.h: --- #define TWI_FREQ 400000L (was 100000L) #define TWI_BUFFER_LENGTH 98 (was 32) --- wire.h: --- #define BUFFER_LENGTH 98 (was 32) --- Hint: make sure that the Arduino ide is NOT running while you patch the files! Step by Step -Make sure you installed the needed libs and patched your Arduino installation -Upload firmware to one or more Rainbowduinos. If you're uploading to multiple Rainbowduinos, make sure to change the I2C adress for each Rainbowduino. Hint: make sure you first upload an empty sketch to the Arduino - else the upload to the Rainbowduinos may not work! -Upload firmware to Arduino -Wire up (I2C from Arduino to Rainbowduinos, Power... Check blog entry for more information) -Install Processing library (see below) -Start an example sketch - check if the I2C slave address match your Rainbowduinos. Install Processing libraries the zip file you downloaded contains 3 main directories (and the directory name should be self explaining): -arduinoFw -processingLib -rainbowduinoFw You can find the processing library in the processingLib\distribution\neorainbowduino-x.y\download directory. In this directory you'll find the processing library as zip file, containing an INSTALL.txt file.