The challenge is that I’m not a technical person. I don’t have a software development background, but I’m willing to learn and can pick things up fairly quickly.

Not to discourage you but if this was a hobby project, id say go for it. But to make this a fully fledged product I think it best you hire someone experienced. And not just with software development, but electronics.

The documentation is great to have but I guarantee it’s incomplete and you’ll need someone to be able to trace the (I assume) serial connection commands.

Likewise, on device software is quite different to something running on a laptop in terms of storage and memory requirements, security, patching and updates management, etc.

Im sure you could learn it but it’s unlikely you could learn it quickly. I’d say you’re looking for someone with 10 years experience in quite a niche field - electronics, firmware, software