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Upgrade then restore backup?

Is it still true that it's not possible to restore a config backup after updating the firmware? I'd like to update my PDM25+ from 1.1.5 to 1.1.6, but don't want to set the whole thing up again like last time.

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pre June 2020 PDM15 Input upgrade?

Does anyone know is a pre June 2020 PDM15 be upgraded to have pull down resistors ?

Without them I am having to put additional external components into my wiring that I'd rather not do.

I've been looking at making a simple PCB with grounded 10K resistors for all inputs. Don't supposes anyone has done this already and might share a PCB design?

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Holley Dominator CAN Setup on PDM25+ V1. v1.15

Trying to get Holley Dominator CAN data working on an older Hardwire PDM25+ V1. Firmware 1.15


The newer PDM28 imports the Holley DBC fine, but the older PDM25 software doesn’t have a Float data option.


I know this has been done before. Does anyone have the correct setup or an old Holley/PDM25 configuration they can share?


Mainly trying to get RPM, MAP, TPS, coolant temp, etc. working over CAN.

124 Views
buzz427
Aug 17

Well I noticed v 1.16 has the data format: float available but I've been unsuccessful using that version, whenever I send a simple output command it hangs the PDM. Maybe I'll try again. Not ready to give up yet. Especially since the whole car is wired up

tjwilson240tjwilson240
tjwilson240

over current on all outputs

Hoping to get some guidance on this. This is my first PDM and have been enjoying the experience until today. This is a fresh build that is undergoing the shakedown phase. I have PDM25 that is controlling everything on my car and has been working well until today. I backed out of the driveway and the car shut off. pushed it back in the driveway and opened the laptop to see all the active outputs in over current fault and cant figure out why. The only things I've changed since the last drive was I moved a shared output to its own individual one (as I had some extra space)and it worked for the first few minutes during engine warm up before it died. I have even unpinned that output and its still shows over current fault unless i disable it. What could cause this type of failure? I spent…

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