I mentor startups in applying good product management processes to help them make better decisions.

Congratulations! Your constraints are actually a blessing in disguise. Without the team or funding, you are left with basically one option which just happens to be the most valuable part of the process. Find someone that needs your device. Sell them on the idea. Get them to give you some form of currency, preferably cash. Even better, convince them to pay you to build the product while you retain all of the IP rights.

Get through all of that, and you will find that getting funding is a more approachable problem.