Luckily, everything went perfect during the prototyping stage: No MOSFETS died, the microcontroller didn't turn off when the gun was firing, and the motor driver worked fine. So after drawing the circuit and designing the PCB in KiCad we decided to send the board's Gerber files to a professional fabrication house. And after doing some research and comparing suppliers, we agreed that Elecrow was our best option. After a couple of weeks here they are.

I ordered 5 of them because it was the minimun number and those cost about 16$ ( manufacturing + shipping). Also I thought that the package was going to arrive in a month ( that's the average time for shipping from China), but it only took 15 days for the PCBs to arrive. And I also have to say that the quality and overall look of the PCBs is awesome.

So now we only have to wait for the rest of SMD components to arrive from China (they're probably arriving next week), solder the components and test the coilgun and the tank. And if everyting goes according to plan, the project will be finished in a month, but it may take a little bit longer because we're very busy with our final High School exams.

PS: we're not releasing the PCB and other project related files yet because first we want to make sure that the project is working without any problems, and when it does, we'll upload all the files and building instruccions.