So I just finished my megasquirt 1 2.2 no mods. I didn't have my stim until I was pretty much finished. So I didn't have it to test while I was building. Anyways after I plugged everything in to test my megasquirt everything works except my rpm/tach signal. When I turn the rpm potentiometer nothing happens in tuner studio for the rpm gauge it stays at 0. No LEDs lit up on the megasquirt or stem except upon boot. I opened a ms1 example tune in tuner studio and that's how I tested everything. Is there a setting I may have missed?
How do I troubleshoot the board. What consist of the rpm/tach circuit? Is there any diagrams of each circuit?
MS1 2.2 no rpm
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