Questions tagged [obd]
OBD means "On-Board-Diagnostics" for motor vehicles. Originally proprietary, there are now standards such as OBD-II and EOBD which define the connectors, electrical signalling systems and a standard set of messages.
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OBD-II and CAN bus broadcasting
I see a lot of Bluetooth adapters OBD-II reading speed, temperature, etc. Does that adapter read from the CAN bus with standard broadcasting?
If read with standard broadcasting from the CAN bus, ...
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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 (...
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OBDII Which hardware and software allows scripting via unix terminal [closed]
I developed an embedded design with dsPIC processor, which is a remote start module, communicating via 6 CAN busses.
Often I would need a much quicker, simpler solution to test something on CAN bus, ...
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OBD STN1110 - Breadboard vs PCB Issue
We managed to hookup our hardware by following suggested design, and we wanted to use only CAN protocol. And on the breadboard with STN1110 DIP package everything works great on ECUSim 2000 simulator ...
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Should I tie Signal Gnd (pin 5) and Chassis Gnd (Pin 4) together on OBD-II port?
I am building a OBD-II reader and wonder if I should tie these two GND together. What is the pros and cons of doing that? My device is powered by car battery and it reads OBD-II protocols through ...
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BDM pads on a Renault 450 DXI (EURO 5) Truck ECU
I'm trying to find the BDM pads for connection and map download from a Renault 450 DXI (euro 5) truck.
Attached is a picture of the ECU.
The control unit is MPC5XX ECU TRW EMS 2.2
Other details ...
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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? ...
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Hook up bluetooth antenna to an Arduino (Or similar)
I have a Bluetooth ELM327 adapter that I am using with my car's OBD2 port. I have an Arduino UNO compatible Magpie (Little Bird Electronics) which I would like to use to interface with this adapter.
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Interpreting CAN bus data from OBD port
I'm using an Arduino with MCP2515 and MCP2551 to read data from a CAN bus over the OBD-II port of my car, Honda Jazz 2012. From what I've read on other forums and the OBD wiki, I can transmit the PID ...
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LPC2129 CAN bus interface to OBD-II
I want to connect an LPC to the CAN bus in my car, and I found that LPC2129 have the CAN protocol implemented on the chip. Searching the Internet, I saw that most of microcontrollers are connected to ...
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Can I connect to my car's CAN bus with an ELM327 interface?
I've been fiddeling around with a Bluetooth ELM327 device I bought a few months ago and am able to get standard OBD information like vin, rpm, speed, etc. But as I just read about recently, OBD-II and ...
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Get current gear from rpm and speed through OBD2
I would like to modify my car with the help of Arduino to display the current gear. I wasn't quite sure where should I post this question as it is a car topic, as well as an electric engineering and ...
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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,...
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is the battery line on an OBD2 plug always on? [closed]
I'm looking at building a circuit that's powered by the OBD2 plug on a car. I can't seem to find if there are any specs around what the battery voltage pin does ...
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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/...
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