Zmanco Posted April 24, 2007 Share Posted April 24, 2007 Sorry if this has been asked already, but I'm unable to find it searching... I'm going to be building my MS1 v3 board soon and want to figure the best way to control the cooling fan. I only intend to control fuel on my N/A, not worried about spark. I do expect that I will want to use it to control idle eventually, but haven't yet decided how I will do that (PWM vs. stepper, etc). But that means I'd rather not use the FIdle to control the fan. From what I can of MSnS, it can control 4 outputs. However, I'm unable to find them anywhere on the V3 schematics. I'm trying to find out what drives them and if it can sink enough current to drive my fan relay directly. If not, I'll add the transistor on the protoboard section. The main thing is I'd like to do all the circuit assy before I install in the car. Suggestions? Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted April 24, 2007 Share Posted April 24, 2007 The circuit for the extra outputs isn't in the main V3 schematic - what you do is add a transistor driven by the processor. The MSnS-E manual has the schematics for how to add this circuit here: http://www.msextra.com/manuals/MS_Extra_Hardware_Manual.htm#outputs Quote Link to comment Share on other sites More sharing options...
trwebb26 Posted April 25, 2007 Share Posted April 25, 2007 Yeah... what Matt said. I run an electric fan using one of these circuits and it works great! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.