[wind_magic]

Originally Posted by pedcab

Hi everyone

This is a circuit I´ve came up with as a possible retrofit to all 4 stroke engines and wich I designed to a friend who asked me for an automatic shutdown circuit in case of an oil pressure drop.

Opinions on improvements are, of course, welcome


[snip]

Regards

I like it.

I would probably change U1 out for a small PIC processor to give more control over behavior (maybe not just length of delay but also watch the start signal), but then I'd have to amp up the PIC's output pin to power the relay coil which is another component.