On 03/12/16 20:38, Andy Burns wrote:

For now I just run the python script on a netbook, hooked by USB to the
sync converter, in fact I was powering the small strip of 8 pixels from
the USB too. I found all the various components and hooked them back
together, found I could power 24 pixels of my longer strip, any more
than that sagged the voltage so much it started "crashing" the pixels
i.e. they weren't clocking and re-sending the data reliably.

So I need to dig out a 5V 3A PSU to power the LEDs not from the USB,
then I can work on some more impressive patterns for the full strip.

I was going to add, before my finger hit send - I wonder how long a
strip you could run before the data line gets too corrupted. 100 on
cable (I'm guessing 10m?) seems find - but I wonder how much longer you
could go, assuming sufficient 5V/12V power.