Start CarPC when engine starts and not when ignition is on
I read for a while in this forum and found very usefull informations. Now I started to build my own CarPC. I decided to by an ITPS and a small PW80 for the mini-ITX Boards. I use a ME6000.
Yes the ITPS does not survive engine cranking. Its a pitty. Even normal operation without a running engine is not possible. I think I have to buy a new battery.
But my idea is another one. The shutdown controler are normaly connected to the ignition. When ignition is on, after a delay the CarPC is started. In my setup it would be suffitient if the CarPC is only running when the engine is ON. So no need for an OPUS ;) and the ITPS would be enough.
The idea is to connect the ignition in from the ITPS NOT to ignition, but to a pin which has 12V only and only if the engine is running.
Has anyone thought about such a setup? Are there any points where I could access a "engine is running" signal within the Car? I have a VW Passat if this information is usefull.