Yes I got the pink color when using the second power source and when it was only plugged in the Atari my led was blinking weak like it was struggling with the power so I thought that the current might not be enough. Anyway you found the solution which I am very greatful for, here is a picture of my Atari synced with the PlayStation controler, works perfect on Uno Cart and on the Pluscart, the Harmony seems to take it for a paddle but if you just leave it for a minute or so it starts working ok. The only down side is everytime I switch to a new game means I turn the power off which makse the 8bitdo lose its connection with the controler so then I have to press the PlayStation button to sync it back again.