The clock is against me. It took a little time to get the settings right in marlin. But i finally got everything up and working from the lcd12864 and I was able to load and unload all 5 filaments. I had a half used spool of black pla to stand in for the missing fifth spool of PETG. So here is my home made clear filament buffer in action..

But it is after midnight. I have to be at work at 8am. I can not start a print now. So if all goes well, tomorrow after work I will print my first 5 color test cube. I am so excited. I built this a little while ago, now.