3. Mainboard
The main PCB is the brains of the whole system. It contains a small microprocessor,
audio chip, power supply, and interfacing components. It's responsible
for controlling the operation of the entire system, and is the most important
component of all.
It connects to the other parts of the gun by means of cables. The cable
sets allow strong, reliable connections that can still be easily removed
for service if needed.
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