VU Meter Driver Board Level Meter Power Amplifier Driving Board DB Volume Meter
39,26 €
Nano Sheild. At the maximum sound, the pointer points to the %100 position of the sign or the maximum value of the sign scale. Screw sheild. Find a signal generator. Adjust the output frequency of 1KHz signal to 0.775v, and connect the signal input of the driver board.
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