Recent Posts

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Other / Need Affordable Kitchen Remodeling? Best Deals on Kitchen Cabinets – Check This Out! Any Re

« Last post by AlisonHark on Today at 12:56:01 pm »

I've been looking for affordable kitchen cabinets, and I came across this amazing company.

They offer a complimentary 3D design, which really helped me see what my kitchen would look like.

 Definitely worth looking into: https://primekitchencabinet.com.

 Anyone else thinking about upgrading their kitchen?

my website ... kitchen renovation Contractors

2

Third-Party Apps / Open source OBD apps

« Last post by STN-Brian on April 22, 2025, 06:08:39 pm »

We’ve come across a number of open source OBD-related projects that may be useful to developers, hobbyists, or anyone interested in vehicle diagnostics and CAN bus experimentation. Below is a list of some apps and libraries, along with a short description of each. Feel free to contribute if you know of other open source tools worth checking out!

ELMduino
A robust Arduino library for communicating with ELM327-compatible OBD-II adapters over Bluetooth. Great for ESP32-based projects.
https://github.com/PowerBroker2/ELMduino

OBD.NET
A .NET library that provides OBD-II communication capabilities. Ideal for developers working in the Microsoft ecosystem.
https://github.com/DarthAffe/OBD.NET

Pyren
A Python-based diagnostic tool specifically tailored for Renault and Dacia vehicles. Feature-rich and frequently updated by the community.
https://gitlab.com/py_ren/pyren/-/blob/master/README.md

CANdash
An open-source digital instrument cluster designed for Tesla vehicles. It taps into the CAN bus to display live vehicle data.
https://github.com/nmullaney/candash

CAN Hunter
A security-focused tool for sniffing and analyzing CAN bus traffic. Useful for penetration testing and reverse engineering.
https://github.com/OSUSecLab/CANHunter

Know of any other open source OBD or CAN-related tools? Share them below!

3

OBDLink CX / OBDLink CX – Key Technical Info for App Developers

« Last post by STN-Brian on April 22, 2025, 05:54:40 pm »

If you're building an app that communicates with the OBDLink® CX, we've put together a helpful article that outlines the key technical details you'll need to get started. While it's not a full end-to-end developer guide, it highlights the most important info for establishing a connection with the CX adapter — including the UUIDs, MTU size, pairing behavior, custom UART protocol, and more.

Whether you're just starting development or integrating OBDLink CX support into an existing app, this is a great place to begin.

Read the article here

Let us know if you have questions or run into any roadblocks.

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OBDLink CX / Re: CX BLE API?

« Last post by Manny on April 22, 2025, 02:36:29 pm »

I have sent you an email.

Hello,

Could you send me the link to for the CX BLE communication API docs too?

I have sent you an email.

5

OBDLink MX+ / Re: Toyota 4Runner (Gen5) - Transmission Fluid & Oil Temperature Identical

« Last post by r x F on April 21, 2025, 12:45:07 pm »

The Engine Oil Temperature PID is confirmed to be putting out Transmission Fluid temperature for the 4Runner and RAV4.

I'm trying to get a hold of TechStream and a cable to see if the base PID from Toyota gives the same for both temperatures, or if the issue lies somewhere else.

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OBDLink CX / Re: CX BLE API?

« Last post by ibodo on April 19, 2025, 02:40:18 pm »

I have sent you an email.

Hello,

Could you send me the link to for the CX BLE communication API docs too?

7

OBDLink MX+ / Re: can the MX+ be used to access J1939?

« Last post by STN-Brian on April 17, 2025, 11:45:16 pm »

I'm not sure why more software hasn't been written for J1939. My guess is that most J1939 users are dealing with fleets of vehicles and can have their company write custom software.

If you are comfortable using a terminal, you can request fault codes fairly easily.
https://www.scantool.net/forum/index.php?topic=16258.0

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OBDLink MX+ / Re: KWP1281

« Last post by Sergey on April 17, 2025, 06:26:42 am »

Thomas, you probably weren't paying attention to the content of the discussion. Everything you wrote is familiar to both me and the manufacturer of OBDlink MX+. The company representatives gave us an answer about that. We'll be waiting impatiently for the new firmware.

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OBDLink MX+ / Re: can the MX+ be used to access J1939?

« Last post by Brokepile on April 16, 2025, 01:06:11 pm »

Does any windows software or android app exist which can do this yet?

 I'm a machinist / mechanic, not a software engineer. This is all a bit over my head to be honest.

 Is there any reasonable way that I can read fault codes from a J1939 CAN network with either an MX+ or a picoscope 2204a with pico 7?

I have a J1939 to obd2 adapter hooked up with CAN high, CAN low, 12v+ and gnd. Everything is good to go on the hardware side, I just need a program to actually read it. I am very surprised that an app doesn't exist for this.

Why do J1939 to OBD2 adapters exist without the software to use them?

10

OBDLink / Re: OBDLINKMX+ / 2019 RAM 1500 SPEEDO - TIRE SIZE

« Last post by Grego26 on April 14, 2025, 11:41:10 pm »

Yes, you might be able to recalibrate your speedometer by changing the tire size option in the ECU – OBDLink MX+ with AlfaOBD would do. This feature should be available on a 2019 RAM 1500, just enter in the correct data for old and new tires.

I had the same problem after wheel swapping – speed readings were completely off. After adjustment through AlfaOBD, all synced up fine. Also check your tire pressure and ensure there are no ABS errors, sometimes that screws with the readings as well.