We got 6 solutions:
- Python x2
- C++ x2
- C# x1
- Ruby x1
You can find them all as usual on GitHub https://github.com/OLIMEX/WPC/tree/master/ISSUE-34
Weekend Programming Challenge – Week #34 POV display solutions
25 Nov 2013 2 Comments
olimex
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olimex 
Nov 25, 2013 @ 20:18:16
So… is SPI fast enough to drive the spinning strip? What motor is spinning it?
Nov 26, 2013 @ 14:27:28
Why shouldn’t it? There is not much data needed. Lets say, we want to do a resolution of 160 pixles diameter. That means we’re good with an 80 LED strip and get like 500~ distinct pixle positions on the outher rim if. With maybe 5 rounds per second (the while thing works already great at 1-2). Adding 3 colours of 8 Bit resolution each, we get an update rate of 80x500x5x3x8 Bit/s or 4,8 MBit quite legit for SPI.
In reality again, the data stream would be way less since update rate on the inner LED would be way less – it’s like with HD drives where you can store a higher data rate on the outher tracks than inside 🙂
Oh, and what motore? Use your arms .)