Submitted by Clayton Gulick (not verified) on Tue, 04/13/2010 - 06:41.
I'm having the same problem, even with a few chips in a chain. I get white flashes and flickers whenever I try to run all colors at the same time. Fades with only one color work perfectly.
From some comments I've read bit banging seems to work better than SPI, I'm going to try to rewrite my code tonight to see if avoiding SPI makes any difference.
I'm using a breadboarded atmega328p, 9v regulated power supply, cat5e cables for interconnects.
One thing I've noticed that's interesting - the last light in the chain of shiftbrites always flickers like crazy unless I plug in an additional cable to the output pins - even if it isn't connected to anything. I don't understand that at all.
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I'm having the same problem,
I'm having the same problem, even with a few chips in a chain. I get white flashes and flickers whenever I try to run all colors at the same time. Fades with only one color work perfectly.
From some comments I've read bit banging seems to work better than SPI, I'm going to try to rewrite my code tonight to see if avoiding SPI makes any difference.
I'm using a breadboarded atmega328p, 9v regulated power supply, cat5e cables for interconnects.
One thing I've noticed that's interesting - the last light in the chain of shiftbrites always flickers like crazy unless I plug in an additional cable to the output pins - even if it isn't connected to anything. I don't understand that at all.