@felmue Hey, thanks for the explanation. Sorry for the late reply. After adding a third Paper, it shows that the receiver queue, not the sender get's async and will deliver old messages. This might also lead to some buffer overflow or event queue problem. Still, the fact that a simple power-cycle on battery power does not revive the touch controller seems, um, not ideal. I'll try the power blocks for other things after your great explanation. Thanks again. Where did you get that info from, btw, I really tried to find docs about it. I enjoyed the diagram method, though :)