I finally pulled my Pixlite16 out of the box because I was troubleshooting why my pixel strings were flashing on my J1SYS P12S card. First problem I had was the only manual on the website didn't seem to match my board. It talked about jumpers that I don't have. I don't have my board in front of me but it looks like the photo I see on the website for v3.4. I only have 1 jumper near a DMX output. Anyways the strings I'm driving are 5V WS2811 rectangular pixels from Ray Wu. I was having flashing issues using the P12S so I thought I'd pull out the Pixlite16 and give it a try. Got the boards swapped out and got it running and the flashing was gone but I could swear the pixels didn't seem as bright as I had been seeing with the P12S. My box has two 5V power supplies so I rigged it up to power up both boards at the same time to compare. The Pixlite16 pixel brightness is only 25% to 30% of the P12S driving the same strings. Power supply voltages were 5.32v and 5.25v. The strange thing is the flashing problem seemed to go away on the P12S so I reconfigured the box to driving everything using it and now the P12S seems to be working fine. Not sure why. I had been changing a lot of settings like trying different speeds. Originally I had 3000 and I settled at 2400 based on other posts. Maybe I had a loose wire and moving the boards around fixed a data line or something. Anyways back to the Pixlite16 I tried moving the gamma slider all the way to the right in the Assistant program and it didn't seem to affect the pixel brightness at all so I assumed that setting didn't apply to my pixel type and yes I had the type set to 2811 in the assistant settings. I saw a bunch of posts comparing this board with a competitors board and the funny thing is nobody talked about which one actually makes the pixels look better. I don't care much about price and warranty and shipping but you mess with my pixel brightness and I'm not a happy camper. That and you got the CLK and DATA lines backwards on the pinout. Everything I've built is wired the other way around and works on every other controller I own. Can we get some standards folks?