...Check your circuit, I guess?...


When you said that I thought but it's precisely about the circuit I'm asking! ... but then I checked again the basiscs I could check without actually getting anything and you were right. Maybe because I was too tired when I finished the thing for the first ...

Almost any digital electric circuit needs a common ground between its parts.

Try it with door open, but without key. With key in position 0, 1 or 2. Remove CEM_PN_AUTODETECT: https://github.com/vtl/volvo-cem-cracker/blob/master/volvo-cem-cracker.ino#L14 (in that case you may need to tweak LS/HS ...

vtl wrote: 22 Oct 2024, 15:55 Why "even"? It's for any P. For those cases when the cracker can not sense who he is talking to.

Because of what it says in the code: I'm sorry, I'm trying to understand.

The PCB was published under the name "Kiel Bryant". Anyway, I had no luck.
I had my doubts about the soldering of the CF160, because pin 1 wasn't signaled by a dot, but I saw under the microscope there is a chamfer on one side of the chip, took a look on the documentation and can confirm they were ...

Almost any digital electric circuit needs a common ground between its parts.

Try it with door open, but without key. With key in position 0, 1 or 2. Remove CEM_PN_AUTODETECT: https://github.com/vtl/volvo-cem-cracker/blob/master/volvo-cem-cracker.ino#L14 (in that case you may need to tweak LS/HS ...

No common ground between OBD connector and Teensy? The original schematic has it:


I added the common ground, but no change, there is still no connection to the car.
Then I took a look at the repository again, and I found a schematic for the use of Bosch CF160 transceivers: no common ground nor ...

vtl wrote: 14 Oct 2024, 09:00 No common ground between OBD connector and Teensy? The original schematic has it:

You're right. I don't know why the PCB hasn't that. I'll try bridging Teensy's pin 1 to OBD's 5.

Hello there!
I've got the printed board (https://www.pcbway.com/project/shareproject/Volvo_CEM_Pin_Decoder_c4d037d5.html) to crack the CEM PIN of my C30 and I soldered the Teensy and the Bosch transceivers, but it doesn't work. I got no communication with the car's bus, regardless of the key ...

Hello there!
I've got the printed board (https://www.pcbway.com/project/shareproject/Volvo_CEM_Pin_Decoder_c4d037d5.html) to crack the CEM PIN of my C30 and I soldered the Teensy and the Bosch transceivers, but it doesn't work. I got no communication with the car's bus, regardless of the key ...

Hello there !

I'm sorry if what I asked was answered before, I searched it but didn't find it.
I got the PCB from https://www.pcbway.com/project/shareproject/Volvo_CEM_Pin_Decoder_c4d037d5.html and soldered the Teensy and the CF160 chips.
All I get is this, no matter in what position the car's key ...