Hi everyone,
This might be too technical a question to post here. If you know of other blinky light forums I might submit to, let me know. I've also emailed the writer of the Arduino library I mention below.
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I've successfully used the FastSPI library with my Boarduino to control a WS2801 LED strip of 160 LED's but have major data garbage when using the same Arduino setup to drive some WS2801 pixels modules.
FastSPI library:
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LoginHere are the products I bought:
LED Strip:
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LoginThe strip works great. The modules, not so much. Everything is powered by a PC power supply - 5v for the strip and 12v for the modules.
I've been driving the data lines with the Arduino digital lines just like the strip. I couldn't find any data on the logic levels so I also tried a resistor divider to drop the data lines to 3.3v. The modules act exactly the same.
Here's the LED strip in action (with the count dropped to 20 and a larger delay() on some of the routines):
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LoginAnd, here are the modules in action:
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LoginDoes anyone have any ideas why the two systems perform so differently?
Thanks, in advance, for any thoughts you may have to share,
Michael Morlan
512.791.4121