Search found 3 matches

by DME
Tue Dec 16, 2008 11:12 am
Forum: Wiring and Sensors
Topic: Need guidance on knock sensing mod
Replies: 5
Views: 707

Re: Need guidance on knock sensing mod

PS or add current limiting resistor in a place of diod I have ment
by DME
Tue Dec 16, 2008 11:10 am
Forum: Wiring and Sensors
Topic: Need guidance on knock sensing mod
Replies: 5
Views: 707

Re: Need guidance on knock sensing mod

Hi,
I'm new to megasquirt but have expiriace in making circuits.
Sorry If this post is to late.
Your circuit is almost OK but You should add a diode between ECU knock input and buzzer/led/knock block to disallow +12v current flows to ms2 input.
see mc9s12f64 datasheet for more info about max voltage ...