All Questions
Tagged with obd automotive
9
questions
1
vote
0
answers
77
views
Possible OBD-II/OBD2 connections for development phases [closed]
Is there any paper/document that summarizes all connection scenarios or cases when you are developing an OBD-II/OBD2 project for automative/car electronics?
For instance,
Scenario 1 : Real car -> ...
- 111
1
vote
1
answer
498
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Unable to get identify CAN-H and CAN-L pinout from voltages & resistances measured at OBD-2 port
I am trying to figure out the CAN-H and CAN-L from OBD2 port fixed below the Dashboard. I unable identify CAN-H & CAN-L as I get following inappropriate voltage & resistance values which are ...
- 25
-2
votes
2
answers
393
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OBDII Car-Hacking
Can I implement an OBD-II scanner using an ATMEGA328P in place of the ELM 327? Preferably read some diagnostics code and upload that data to a web app via mqtt using GSM module.
- 23
0
votes
0
answers
873
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Help with ISO 14230 K-Line initialisation
I have an OBD-II scanner hardware built using STM32 and it is working fine with most vehicles.But I'm facing difficulty with ISO 14320 K-Line fast.
Even though the firmware works fine when tested ...
- 386
0
votes
2
answers
1k
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OBD-II bus - emulating the car side
TL;DR: If I connect one of these https://www.scantool.net/scantool/downloads/97/stn1110-ds.pdf directly (i.e. the CAN RX and CAN TX pins, plus overall 12 V power) to a device intended for a car (...
- 273
3
votes
2
answers
7k
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OBD port power source [closed]
I've read on forums that OBD port can provide max 5A current at 12V. What is the source of the power? Is it coming from battery directly or is it regulated power supply from somewhere else, maybe ECU? ...
- 43
0
votes
2
answers
3k
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Fuel Injection Control through OBD port?
I am trying to implement remote control of a car, by connecting a GSM device to OBD port.
If someone is using my car, I need to remotely stop the vehicle by sending command.
Upon sending STOP command,...
- 31
0
votes
1
answer
804
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Bench testing OBDII dongle
I'm currently trying to connect my wifi obd2 dongle directly to a VW ecu that is powered by a bench power supply.
I followed the guide here:
http://www.nefariousmotorsports.com/wiki/index.php/...
- 101
4
votes
1
answer
5k
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What do chips like ELM327 and STN1110 do?
What problems are the chips ELM327 and STN1110 solving?
If I connect the necessary interface ICs (I mean dumb ICs, like level shifters, inverters, etc., not pre-programmed devices like ELM327) ...
- 949