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Does anyone have the wiring diagram for the holley USB dongle for the TermX ecu? I Have the materials to make them for 1/4 the price holley sells them at but I can’t find a wiring diagram
Does anyone have the wiring diagram for the holley USB dongle for the TermX ecu? I Have the materials to make them for 1/4 the price holley sells them at but I can’t find a wiring diagram
Derek
Did you ever find this?
Where did you get the raw materials/ can you share those PNs?
looks like whatever chip they used lets you define custom info about it, but i dont have a ton of experience with usb drivers. i am tempted to cut it open to see whats inside. they super-glued the plug housing =(
a while back i split open one of the 3.5" dashes to mess around with and they glob stuff over the two chips that do anything so i cant even tell you whos can transceiver they are using.
and i got a little curious and there was a box cutter right here so heres what the inside of a holley usb dongle looks like. ill probably dig a little deeper and if so, ill post what i find. if anyone else cares to share as well, please do
looks like d5 was a casualty of this experiment, glad i dont have holley **** anymore. this cable was a waste of $50 from the beginning, i only used it once to prove the 3.5 screen didnt work right.
so it has all the usb and can controller **** built into the chip. looks like holley wrote their own firmware so there isnt a diy solution here unless you rip their firmware(id guess the flash is locked).
so it has all the usb and can controller **** built into the chip. looks like holley wrote their own firmware so there isnt a diy solution here unless you rip their firmware(id guess the flash is locked).
im just now seeing your post on this thread, my bad man. Thank you for sacrificing a holley dongle.
I have located CAN to USB converters before, I’m surprised it isn’t just data transfer and they actually put firmware on it
looks like d5 was a casualty of this experiment, glad i dont have holley **** anymore. this cable was a waste of $50 from the beginning, i only used it once to prove the 3.5 screen didnt work right.
what engine management are you using these days? I'm so into the holley **** i dont know whats out there
im just now seeing your post on this thread, my bad man. Thank you for sacrificing a holley dongle.
I have located CAN to USB converters before, I’m surprised it isn’t just data transfer and they actually put firmware on it
CAN is a pretty generic protocol and can be leveraged in a proprietary way, so im not sure its as easy as just getting a can to usb converter. sure, its a thing, but it will just poop out a stream of bits so you need a translation layer. that chip in the holley usb cable does several things that you would need to emulate:
-identify to the operating system as a holley can adapter, which the holley software looks for
- allow the holley software to connect to it in a (almost certainly) closed/proprietary method
- hand off all those bytes the ecu is spitting out to the holley software in a manner that it is expecting
- ingest then pass on bytes from the holley software to the holley ecu in a manner that makes all parties involved happy.
its a bigger lioft than might seem on the surface. lots of people have reverse engineered gm code but id speculate that much of that was because those communication protocols are standardized so that hardware layer can be leap-frogged over.
it would totally be possible to make your own holley-compatible cable, but i just dont see it being worth it since for $50 you get the keys to the kingdom and arent accessing anything you couldnt otherwise get.
what engine management are you using these days? I'm so into the holley **** i dont know whats out there
i went with haltech. i havent fired the motor off yet but my car is almost ready. it has a nexus and i built the harness 100% from scratch and it controls everything from the DBW tb to the headlights and turn signals.
ive spent quite a bit of time configuring everything and exploring the software and ive been pretty impressed with it. some of the stuff ive noticed it lacked, like ample generic objects, they have added in updates since i got it. they seem to be actively adding quite a bit of features regularly.
its kinda expensive but the features are second to none and its all in a single box, my car now has ZERO relays in the whole thing and the only two fuses are for the power windows and a couple other direct to battery items.
i went with haltech. i havent fired the motor off yet but my car is almost ready. it has a nexus and i built the harness 100% from scratch and it controls everything from the DBW tb to the headlights and turn signals.
ive spent quite a bit of time configuring everything and exploring the software and ive been pretty impressed with it. some of the stuff ive noticed it lacked, like ample generic objects, they have added in updates since i got it. they seem to be actively adding quite a bit of features regularly.
its kinda expensive but the features are second to none and its all in a single box, my car now has ZERO relays in the whole thing and the only two fuses are for the power windows and a couple other direct to battery items.
I do like their new boxes, and it uses the same NSP software that is now available for their all of their Elite series computers. For cars that require rewiring everything it's a killer box having all of that stuff built in. I mean how many computers have a damn oscilloscope and spectrum analyzer built into their software to monitor things?
It monitors voltage and current for all outputs as well so I’m pretty curious about actual draw of coils and injectors too.
I added lots of sensors to the car so I can turn it into a science project I’ve always wanted to do. I took a quick look at the datalog viewer and was a bit disappointed though. I’m hoping once I start using it I figure it out a little better. I may have to export to other formats to get math channels, 3D table graphs and all that other nerd ****
I’ve always wanted to build a harness like this just to say I did. The entire engine harness with every sensor I could think to add was less than 3/4” diameter. It’s been a really slow process finding time around my day job but I’m moving forward here and there.
It monitors voltage and current for all outputs as well so I’m pretty curious about actual draw of coils and injectors too.
I added lots of sensors to the car so I can turn it into a science project I’ve always wanted to do. I took a quick look at the datalog viewer and was a bit disappointed though. I’m hoping once I start using it I figure it out a little better. I may have to export to other formats to get math channels, 3D table graphs and all that other nerd ****
Yeah the computers like the Haltech and Motec are really nice with being able to see literally all voltage and current draws on the pins in the software. The one thing I don't care for on the Haltech is the log viewer, it's like they attempted to copy the Motec interface but missed the boat on that. If there was one thing that I wish Haltech would change/upgrade it's the log viewer portion. You can export the log though in CSV format so you can import into other stuff easily.
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DIY Holley USB Dongle 
