Kernel mode code signing service?

I develop some tools utilizing low-level hardware access.
At Windows, it’s can be done using kernel mode driver/service, there is no API functions to access functions i need directly.

For test purposes, i can enable Test Mode, but it dramatically decease security Microsoft fighting for, so it not suitable way for thousands of my project users.
And pay $400 per year for EV certificate is not acceptable for me.

Is it any way to create service for code check and sign from source repository to avoid both malware and this pain for independed developers?