They can't do the work because they copied the firmware from some other company's product and don't actually know how it works.

That other company probably also copied it from somewhere else, etc.

> I presume they themselves do have access to its development.

Bad presumption.

Just develop a new board with your own bespoke design and firmware, possibly inspired by theirs. If you can't do this, you shouldn't be in this business.

Hi,

    My name is Matthew Burns.  I am an MIT Grad who runs an electronics product design firm.  I work with startups and product design firms, and I am currently subcontracting from and am the electrical for 3 PD firms across the country.  I have a lot of design experience in the PD world and have been making boards since I was a kid.  I would love to design, and / or reverse engineer your wheelchair electronics.  Whether it be more accessible parts, clearer supply chain, acquiring firmware / hardware that is your IP and not opaque to change, adding capability, or doing cost reduction.

    I have completed a number of motor and controls projects including robot grippers, electronic transportation carts, and more.  You can view some of my professional work online at:

www.burnselectronics.com

    You can also view my personal work at:

www.bunch-of-electricals.com

    I'd love to help.  Let me know if there is a good time to chat.

Thanks, Matt

Which PCB gyro board?

When I think of "PCB gyro boards" it is typically a commodity chip like the MPU-9250 packaged on a board with the necessary filtering caps, etc, There is not any firmware to modify really, all of the processing is done by a separate MCU that handles the filtering and processing.

Don't do this. You will regret following this path.

Spin your own design, it will be less effort, less cost, and you'll own the design. It is not that complicated that you have to outsource all reason.

To jump on the bandwagon, I do that sort of work sometimes, but more details on the product to modify would be needed. Also, it may be more cost effective to design a replacement product (also noted by others), which I can also do. I would have reached out directly, but you didn't provide any contact information in your profile. You can find contact information for me in my profile. I wish you luck either way.

Reverse engineering is my bread and butter. I’d be willing to look into this for you.

Feel free to reach out: uniform_solar.9i@icloud.com

I would suggest posting a bit more information if you want help.

Is this an off the shelf or a custom board?

What are the components on the PCB? (The MCU, gyro)

Did they write some custom firmware for you?

We do this all day, would be very happy to help.

www.iancollmceachern.com