Difference between revisions of "ChromoDisk"

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m (Fixed file link)
m (Added notes for improvement to keep track of them)
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[[Media:ChromoDiskProto.mp4|Demo of prototype]]
 
[[Media:ChromoDiskProto.mp4|Demo of prototype]]
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Notes on Improvements:
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1. Improve power distribution.  RESET pull-up is at the end of the line.
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2. Polarity of battery holder is reversed.
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3. Add ground plane
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4. Pull-up on SCLK line affects programming

Revision as of 15:09, 4 November 2011

The ChromoDisk aka ColorMesh v1

... is a round PC board with 9 rings of 18 RGB LEDs each. The microcontroller and other components that make it work are in the center. The design is based upon the [Aurora Instructable]. Since I've worked with AVRs, and this seems like an interesting introduction to PCB design with LEDs, I decided to redo the original to fit into a 100mm dia board for minimum cost. I also designed it for a AA battery pack on the back side of the board. We'll see how long it lasts with 162 LEDs!

Current status: Boards in, first prototype done (5 hours to assemble!), writing software for it. Here's a demo of a simple program I wrote:

Demo of prototype

Notes on Improvements: 1. Improve power distribution. RESET pull-up is at the end of the line. 2. Polarity of battery holder is reversed. 3. Add ground plane 4. Pull-up on SCLK line affects programming