Ok, maybe I found the problem =( https://community.onion.io/topic/2375/resolved-omega-2-powered-without-dock-shuts-off-after-18s I use a yrobot breadboard powersupply https://www.petervis.com/Raspberry_PI/Breadboard_Power_Supply/YwRobot_Breadboard_Power_Supply.html anybody know if its powerfull enought? UPDATE! Ok seems to be the very loose jumpers. Sorry for interupting!