SR-25 homemade HPA engine with Bluetooth FCU update - 50rps and more :)

Update on HPA-related progress. I've dropped this in the SR-25 now and it feeds and shoots flawlessly with the Lonex hop unit and r-hopped barrel.
The engine is based off Kuba's design, adapted for the SR-25 gearbox and simplified a bit.
It uses a basic 3/2 NC solenoid valve and a spring to return the nozzle, so it's not that efficient. Working on an air return design that will use a MAC bullet valve (pretty similar to the Wolverine engines), which will be a lot more powerful, efficient, quiet, and all fit inside the gearbox shell.
The coil engine needs some design changes to be more efficient and run on 11.1V LiPos (currently needs two 9.9V LiFePO4s in series to operate).