MicroSquirt.com read only forum (Jan.15,2018)

Here's a crazy idea -- we have Accel Enrichment LED and Warmup LED's wires coming out, basically doing nothing in my setup, would it not be possible to have a tacho out in the spare ports part of Megatune, then users could potentially use any output for tacho out (MS2, uS, Seq, etc...). The current draw would be next to minimal and looking at the IC's used on those outputs (same as the fuel pump), they should do the job just fine...

What do you think?

When I said that about using an extra output line for the sequencer, the warmup/ accel leds were exactly what I had in mind.

If I recall correctly, the EDIS module has some dc bias on the VR inputs? Maybe I'm wrong but I recall when I was doing some bench testing years ago, I used an isolation transformer to isolate and balance the signal.