Questions tagged [obd-ii]

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How to fix this race condition in Objective C / async problem? 'index 1 beyond bounds for empty array'

Hi i have a Problem with this Library: LTSupportAutomotive I´m a swift programmer so not really good in objective c. how to fix this race condition? I hope someone can help me. '*** -[__NSArrayM insertObject:atIndex:]: index 1 beyond bounds for empty array' -(void)asyncEnqueueInternalCommand:(LTO...
Skyborg
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2

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Unable to communicate with ELM327 bluetooth

Here is my code for establishing a bluetooth connection with an ELM327 and comunicating with it using a laptop: import java.io.*; import java.util.Vector; import javax.bluetooth.*; import javax.microedition.io.Connector; import javax.microedition.io.StreamConnection; import javax.swing.*; public cla...
Flame of udun
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1

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Reading VIN number via OBD-II (from Citroen, Peugeot, Fiat)

I built a simple Android app that reads in basic car parameters via OBD-II like VIN number and battery voltage. It work nice but I have problems retrieving VIN number from non-German/non-American cars. So for instance in case of Citroen or Fiat one cannot get the VIN number and the returned value is...
user3628996
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BluetoothChat-to-ELM327 split response message

I am attempting to communicate with an ELM327 OBDII Bluetooth dongle using the Android BluetoothChat example. I can connect to the device without any trouble, and messages from BluetoothChat to the ODBII device seem to be transmitted and received by the device correctly. However, the response messag...
nth0007
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Understanding the data from OBDII protocol

I am currently developing an application for Android which connects to an OBD device (Using ELM 327 Mini) and reads its data. I am relatively new to the OBDII protocol, I just started working with it like a month ago, but using the official documentation, looking around on the internet and using the...
Mileni
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Connecting to a STN1110

I'm trying to connect to a STN1110 chip via screen. Unfortunately I only get strange characters as response. My understanding is that this is due to the wrong baud rate. I tried several baud rates I could find for STN1100 (9600, 115200, 38400) but none of them work. Am I missing something? Thanks a...
Zuendi
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Detect AC(on/off) and Window(open/close) of CAR using OBD

Is there any way to detect AC(air conditioner) and Window(open/close) using OBD. I am refering below links for OBD reader but I can't able to find any way to detect AC(air conditioner) and Window(open/close). https://github.com/pires/obd-java-api https://github.com/pires/android-obd-reader
pRaNaY
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Connecting to OBD ELM327 via Android

I am creating an Android app that connects to OBD ELM327 via Bluetooth, similar to the BluetoothChat. I have currently successfully connected to the device using a socket but am struggling with the Input and Output streams. I currently have the socket connecting method in a thread, do I need to hav...
JoelArgls
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OBD II App in Visual Studio(C#) with Xamarin

I am working on an Android App that receives Data from a OBD II Bluetooth Adapter. Setting up the Connection between App and Adapter works but when I send commands to the Adapter I wont get the right results. It either returns: +CONNECTING< or the command I just sent to the Adapter. The App is co...
Caspar
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How to communicate with OBD-II device

There is OBD-II device like http://www.rczd.com/c/2015/Car_Diagnostic_Tools_0223/41193.html this device provider does not have its web page or documentation source. We have short "quick start" in box and assurance that it support OBD-II PIDs. Recently I used to follow https://en.wikipedia.org/wiki...
Jacob
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OBD2 - ELM327 bluetooth simulator [closed]

I am developing Android application for connecting to ELM327 for car unit through Bluetooth. Is there any simulator, to simulate ELM327 on Windows 7 through Bluetooth? So I can test my application without a car.
Amsik
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How does the following code snippet work?

I am a novice in python and am going through an opensource project called pyOBD by Donour Sizemore for the ELM327(not really sure,could be aimed at more scantool devices).I can make out that the following is a method to convert a hex value to int.But how does it work? Specially the line with eval in...
Flame of udun
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Android OBD-II How to clear distance travelled (PID0131)?

I working on an app that I need to calculate distance travelled from point A to point B (by car). I asked Elm Electronics (chipset manufacturer) and they said there is no standard OBD-II PID to return mileage from odometer, although car manufacturers might provide a PID. Since this way is not standa...
Hesam
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3

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Unable to Get VIN Number response from OBD-2 Device

I need to fetch VIN number from car's controller using plxKiwi-2 wifi obd2 device. I am getting other information like car rpm,speed,throttle position,etc. in correct format. But when I request for VIN Number it gives me below response. 014 0: 49 02 01 FF FF FF 1: FF FF FF FF FF FF FF 2: FF FF FF FF...
iCoder
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5

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Initialization of obd adapter

I am developing a android application which reads Obd data from vehicle's Obd adapter via bluetooth... I am facing issue while initializing the adapter. I have sent following Obd commands in sequence to initialize the obd : atz (received OK) atsp0 (Received OK) ate0 (Received OK) 0100 (This is the...
user1885618
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Can't connect to OBD-II device from node-bluetooth-obd

I'm attempting to connect via node.js to an ELM327 Bluetooth OBD-II adapter using Eric Smekens node-bluetooth-obd package, but I'm getting an error I'm not sure how to debug. I am doing this on a Beagle Bone Black running Ubuntu. I'm able to pair with the device using bluez-simple-agent: sudo bluez-...
tomgersic
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2

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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 infos like vin, rpm, speed etc. But as I just read about recently obd2 and can are not the same. I've tried to sniff on my can bus with th AT MA command, but I get no response, so I g...
Beejay
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How can I read/write data to and from an OBD-II adapter with Windows Phone 8?

I am currently working on a Windows Phone 8 application, which will (hopefully) have the capabilities to connect to a vehicle via bluetooth using a bluetooth OBD-II adapter. I'm reasonably new to programming for WP8, although I'm attempting to not try and to ask for help but I've sort of hit a part...
MattVon
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Connecting to ELM327 over Bluetooth (Android)

I am trying to write a simple app (similar to the BluetoothChat example) that will communicate with ELM327 (BT). Torque (well known Android OBD app) is able to connect OK - its the only one. Neither my test app, nor SENA BTerm, nor android-obd-reader (well-known open source OBD app) is able to conne...
PVS
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Asynchronous Values Update using GCDAsynSocket api

I am developing one application in which I need to update multiple values like Engine RPM,Speed etc. parameters at a time using OBD connector. I need to achieve asynchronous command/response . For this I am sending commands using [gcdAsyncSocket writeData:data withTimeout:-1 tag:uniqueTag]; asynchro...
iCoder
2

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2

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607

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Finding vehicle fuel-air equivalence ratio with OBD

I'm trying to write an app that communicates with the OBD port in a car and (among other things) find the AFR, but my car doesn't seem to support the fuel-air equivalence ratio command 01 44. I see that there are two sets of PIDs for the oxygen sensors that give a fuel-air equivalence ratio. The fir...
wlyles
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Converting Hex answer to Dec?

I need some help in converting the answers I get from my OBD adapter in my car to decimal and then later adding whatever value comes out of the conversion to a formula and printed out. private class ConnectedThread extends Thread { private final InputStream mmInStream; private final OutputStream mmO...
swess
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Android OBD-II: How to get distance traveled in meters?

I'm making an android app that connects to an OBD-II device (ELM327 - http://www.dx.com/p/elm327-bluetooth-odb2-v1-5-car-diagnostic-interface-126921#.V86wdih97IU) via Bluetooth. I'm also using the https://github.com/pires/obd-java-api/ library to get the data from the device. I am able to connec...
lordian
2

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560

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Communication between OBD device (STN1110) and android over Wi-Fi

Hi I am developing an android application , in which there is a communication part between an OBD device and android device , I am planning to use the STN1110/OBD II protocols for communication over Wi-Fi network. I have checked in Google but it was not quite satisfied for me.I am looking for some...
Wolverine
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How to implement an app using OBD2 (ELM327) like Torque in android?

I am very new to obd2 and elm327. I need to develop an application to get car info using obd2(bluetooth) and elm327. Please any one can help. Thanks in Advance.
Latha
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How to use BLE OBDII Peripheral

I'm trying to create an iOS app that will read from an OBDII Bluetooth 4 (LE) device. I purchased a Vgate icar3 bluetooth(4.0) elm327 OBDII. I plug it into my car and find IOS-VLink peripheral that advertises some services. I can then get the characteristics for those services. These are the service...
Daniel Burton
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How to communicate with OBD II using bluetooth or wifi using iphone

I like to create a simple application for iOS, which read data from car through ODB II Wifi/bluetooth device and display in iPhone screen. But i don't know where to start. Please somebody help me to achieve below results. I have both Bluetooth and wifi dongle. Step 1 : Pair the bluetooth or Wifi d...
Dax
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How Wifi and Mobile Data both work simultaneously in android for OBD2 device

I'm developing application which connect OBD2 device by Wifi and app can read Speed,RPM,Engine coolant temperature details etc in android.So wifi is used only for connecting with OBD2 device(it doesn't have facility to connect with internet,only for communicating) and communicate with it.Now I need...
ArchFever
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2

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ELM327 Returning “ERROR” when sending OBD Commands

I am currently working on an Android Application to Read from a vehicle's OBDII Port via a ELM327 bluetooth dongle... For those of you who dont know much about the ELM, I would reccomend this data sheet, it has been very helpful... Data Sheet I am able to connect to the dongle, and I can use every "...
Bubo
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Android Shared Array with dynamic OBD commands

In my app I established a communication with car via OBD port and Bluetooth. I have a SharedPreferences that contains the preferences of commands to shown set by a Preference Activity. I would to use a Shared Array of commands that can change their content dynamically and send the new ArrayList to t...
Dario
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Difference between write() inside BluetoothChatService

Following this example for connect my phone with OBD port via Bluetooth i see that method inside class BluetoothChatService-->ConnectedThread have inside a method write()... But the class BluetoothChatService add another method write() as you can see in this link. BluetoothChatService.java Which are...
Kali
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Not getting proper voltage reading from my OBDII reading app

I'm working on a OBDII reading app to read basic data such as (in this case) voltage. I've tried other apps and it works just fine to read the voltage of the OBDII adapter, so there's nothing wrong with the adapter itself. I'm using the OBDII api from pires on github. When connection to my OBDII via...
swess
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OBD-II iOS WiFi Connection

I am trying to write an iOS application that connects to an OBD-II Interface over WiFi (specifically the OBDLink MX WiFi Scan Tool). I have written some basic socket code taken and I am able to open a socket to 192.168.0.10:35000. I receive the NSStreamEventOpenCompleted for both input and output...
Clay
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How to interface with obd ii elm327?

Do I have to purchase this in order to get all the PIDs and the full instruction set for communicating with the car's obd ii interface via an ELM327? I tried looking for some kind of api for the ELM327 connector, but couldn't find any documentation besides the actual chip's schematics. The standard...
Jaigus
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Communicating with a Bluetooth OBDII dongle (I think it's an ELM327)

I have a Bluetooth OBDII dongle for my car (the brand is Veepeak), and I'm trying to write a Windows app that can communicate with it. So far it seems that I'm able to connect to the device from my laptop, send commands, and receive some sort of response, but the responses I receive are not what I e...
3

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how to request OBD parameters and receive them

I'm new to android and I thought to develop a bluetooth app to retrieve parameters from an OBDII device. I have downloaded the sample bluetooth chat application and configured it. The problem is how and what is the message that I need to send to the OBDII device in order to receive the parameters? a...
Suchith
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Using pyUSB to read data from ELM327 OBDII to USB device

I am having problems using the pyUSB library to read data from an ELM327 OBDII to USB device. I know that I need to write a command to the device on the write endpoint and read the received data back on the read endpoint. It doesn't seem to want to work for me though. I wrote my own class obdusb fo...
Granttastic
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377

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Is it possible to read manufacturer specific codes with ELM327

I plan on creating a SW which interacts with the CAN bus (for Cars) over OBDII protocols. The SW will be for PC mainly, and perhaps Android. However, it is no use if I cannot adapt it to read more codes than what is legislated and "public". Is it possible to read manufacturer specific codes with ELM...
obd_dude
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2

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OBD II is constantly sending “ 7F 01 12”

I am writing a program that gets the speed and fuel rate of a car from the OBD II computer. Getting the speed works fine, but I always get "7F 01 12" when asking for the fuel rate. How can I fix this? I am using this to get the data from the OBD, and here is my code main.py: from OBD import OBD impo...
bijan311
5

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1

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1.6k

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Android Bluetooth .connect() exception Nexus 7 OBDII adapter

I'm using standard API procedures for connecting to a device. Specifically OBDII bluetooth adapters. I have two OBDII bluetooth adapters, of different models. Running the exact same code, the first will pair and connect without issue with every phone/tablet I've tested. The second will pair and c...
user2259880

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