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Fuel Pump PWM Control

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Old 12-02-2016, 09:31 AM
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Originally Posted by acedeuce802
My CAN-EGT can PWM up to 20kHz
Epic. I need to check the tinyiox. Are you going to run the fuel pump fast too?
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Old 12-02-2016, 09:36 AM
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TinyIOx should be the same, I believe the CPU's use the same if not similar timers.

Yeah, I plan to play around the high frequencies with both fuel pump and cooling fan to see if there's a sweet spot. Now I'm regretting not going electric water pump, PWM all the things! The CAN-EGT+ allows for 4 PWM circuits, and I think they all run on the same timer.
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Old 12-02-2016, 09:38 AM
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jbperf.com ? View topic - TinyIOx generic PWM

Check out the spreadsheet linked in this post. The frequency possibilities are endless.
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Old 12-02-2016, 09:41 AM
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Awesome. That's what I remembered.

My only worry would be having fuel pump on an external board. Would worry about that a bit
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Old 12-02-2016, 09:44 AM
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Yeah I've thought about that too. It's probably fine? If the CAN communications are robust, and the protection circuit to the expansion board is adequate, so I don't foresee any issue.
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Old 12-02-2016, 09:54 AM
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I'm sure its probably fine. I will still worry about it. Thats how i roll
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