What clock rate are people running their 6803 pixel strips at? I have a PIX8AD and the manual says to start with a clock rate of 750. This worked good when directly connected, and with 4core alarm cable of a 1m distance to first pixel. At ~2m, I had mixes results depending on the amount of pixels connected, voltage drop, flickering when dimming, all sorts of strange things like only 70% of the pixels working, etc. Tonight’s testing was with ~150 pixels connected to a single SPI output. Dropping the clock rate back to 250 and using some scrap CAT6 with 2 pairs joined for clock & 2 pairs for data, i then got perfect results using a 7m length. (7m was tested because that's the amount of offcut I already had ) Dropping the clock back even more to 100, didn't really seem to make any real difference to the 100ms interval test sequencing I was using with Vixen. Also 12VDC Power was from a cheapo Ray Wu unit too. Previously I thought I was getting EMI problems, but it all that weird stuff with flicking when dimming seems to be tied back to to the clock rate/lead in cable length. I’m keen to know what other people have discovered with cable/lead-in distances!