Vida CEM swapping
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MotorolaV3X
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vtl
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Over $20 for board plus a few bucks for delivery. Plus it's a Chinese product. The cracker started on the whole-Chinese ESP32, and it sucked. I take pjrc quality and support over anything subpar any day.
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rkam
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Check your source code for the two missing bytes.ghettob wrote: 19 Jan 2026, 16:05
The pin printed to the display is far from the one i got in p3tool. Am i getting the hash numbers on the display or am i missing something?
These can be whatever you want, but will result in a different working pin code.
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vtl
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Guess, they were 00 00. Or he's printing seed or key, not the pin.rkam wrote: 20 Jan 2026, 10:28Check your source code for the two missing bytes.ghettob wrote: 19 Jan 2026, 16:05
The pin printed to the display is far from the one i got in p3tool. Am i getting the hash numbers on the display or am i missing something?
These can be whatever you want, but will result in a different working pin code.
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Treur
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STM32H743 - 480mHz, 2xCanFDvtl wrote: 20 Jan 2026, 04:57Cracker needs more MHz than this thing has. Some CEMs won't crack with Teensy running at 180 MHz, for example. Also it needs a built-in CAN, external CAN controller via SPI is too slow.Treur wrote: 19 Jan 2026, 23:27 It looks pretty good. But personally, I'd consider porting it to something like the STM32F743. It's much cheaper and more compact.
Teensy 4.0 is $23.80 at Sparkfun, I doubt a comparable STM32 board can be cheaper.
$23.80 - it's for you, but for me it will be 60€
Last edited by Treur on 20 Jan 2026, 15:07, edited 1 time in total.
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Treur
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For 60€ I can buy so much beer that I'll pee myself.
Or, to put it another way, I have a ready-made device lying around, it has STM, 2XCAN, and turbo Bluetooth on board. Someday I'll find the time to finish the firmware and add a cracker.)))
I want to make j2534 and have your code on board that runs on demand.
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vtl
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But is it a good beer? =)Treur wrote: 20 Jan 2026, 15:08 For 60€ I can buy so much beer that I'll pee myself.
...
I want to make j2534 and have your code on board that runs on demand.
I see no reason why it can't be done. The hardest part will be converting to yet another CAN library. But it was done once already, MCP2515 -> FlexCAN.
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dikidera
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I know you're not a fan of AI slop, but it can likely convert it in under 5 minutes.vtl wrote: 20 Jan 2026, 15:27But is it a good beer? =)Treur wrote: 20 Jan 2026, 15:08 For 60€ I can buy so much beer that I'll pee myself.
...
I want to make j2534 and have your code on board that runs on demand.
I see no reason why it can't be done. The hardest part will be converting to yet another CAN library. But it was done once already, MCP2515 -> FlexCAN.
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Arty
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I've already tried. Unfortunately, it hasn't worked yet.dikidera wrote: 20 Jan 2026, 23:19I know you're not a fan of AI slop, but it can likely convert it in under 5 minutes.vtl wrote: 20 Jan 2026, 15:27But is it a good beer? =)Treur wrote: 20 Jan 2026, 15:08 For 60€ I can buy so much beer that I'll pee myself.
...
I want to make j2534 and have your code on board that runs on demand.
I see no reason why it can't be done. The hardest part will be converting to yet another CAN library. But it was done once already, MCP2515 -> FlexCAN.![]()
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