VVT control relay driver
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VVT control relay driver
MS1 on V3.0 board running MSnS-e (Version yet to be decided)
I am simply after some clarification/reassurance on the mod's required on the board to use the LED circuits to drive an external relay. I have spent hours searching posts and the Megasquirt websites and have ended up here. Please point me in the right direction if this is already written up somewhere.
I am looking at swapping the 2n3904bu (100mA) transistors for ztx450 (1A) transistors, the same as the FIdle circuit uses, and running a wire from the -ve leg of the LED out to one of the spare output pins. I will also install a protection diode accros the relay coil. Will this be safe enough? Will the transistor be all that is likely to get cooked if something goes wrong.
Cheers,
Daniel
http://megasquirt.sourceforge.net/extra/waterinj.html
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- MegaSquirt Newbie
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I have a simple little kit with the parts needed here if you want it, or you can pick the parts up locally I'm sure... http://www.DIYAutoTune.com/catalog/pcbv ... p-126.html
This will drive a relay and MSnS_E will let you trigger the output based on any of several variables (RPM, CLT, IAT, MAP, etc) with Hysterysis control so you can dial in just what you need.

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- MegaSquirt Newbie
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