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Megasquirt DIYPNP good RPM signal, no spark output

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Old Apr 28, 2010 | 05:59 PM
  #1  
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From: Lavonia, GA
DIYPNP good RPM signal, no spark output

Right now here's where I'm at: I'm getting a nice RPM signal, but NO spark output.

Coil select (spark C) changes from high to low, and if I set the spark output to "inverted" and reboot the MS, it will change from high to low...but Spark A and Spark D never go low to fire the coil. This is verified on an oscilloscope.

On Aaroncake's guide, he must be using a different version of the firmware because there are several differences between his guide and Megatune. I've got v2.1.0 loaded right now. I'll have to post up a few examples when my battery recharges on the laptop.

I'm thinking that since I can't select some values in Megatune, maybe part of the rotary code is missing? Should I update to one of the beta versions of the firmware to see if that changes it?
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Old Apr 28, 2010 | 09:15 PM
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From: Lavonia, GA
Attached is my MSQ.
Attached Files
File Type: zip
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Old Apr 29, 2010 | 10:56 AM
  #3  
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You need a newer firmware. The microsquirt mode in 2.1.0 didn't work for rotaries.

Ken
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Old Apr 29, 2010 | 12:45 PM
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Originally Posted by muythaibxr
You need a newer firmware. The microsquirt mode in 2.1.0 didn't work for rotaries.

Ken
Ah, that would be the answer I was looking for. I guess I'll go ahead and update to the latest 3.0.3t then.
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Old Apr 29, 2010 | 09:31 PM
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Well, that fixed it. Started the car for the first time on this ECU tonight. WOO!!! Thank you!
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