Sorry where should I look for the output, I am not seeing anything.what output do you get?
Not come across Popen before, just googled it and it looks sort of way beyond my pay grade in this language, sorry.subprocess.Popen should allow you a complete management of output
Not sure why you said that. I did down load it last August when I got the B+ and it does work on that.It looks like that python library is cobwebware. It's not even been updated for B+ or A+.
I thought that pip was supposed to update automatically when the github code changed. That is it will always take the latest github code?Best guess: that version is for the previous Pi's
No, the Neopixel library uses the DMA not the SPI.If the complete message fits in the SPI FIFO (from memory 128 bytes) then it was OK.