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Digital Volume Controller

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If you need digital volume control, then this circuit will great for you. Just press the button and you will be able to increase and decrease the volume level. This circuit is for 1 kanal only. For stereo audio, you need to build 2 similiar circuit and use push button switch which have double input and double output.

Digital Volume Controller circuit diagram

Digital Volume Controller circuit diagram
Make Your Own Printed Circuit Boards
Make a PCB in very easy steps..! Create your PCB design using PCB designer software like Eagle, print out your design on photo paper or glossy paper with laserjet printer. Stick the printed design on the PCB (copper side) and then heat it using hot iron plate. The ink will stick on the PCB and it will be ready for etching process.
Watch this video detailed steps:


Note: If you don't have laserjet printer, then you can print the design on standard paper. Copy the printed design at Copy Service around your location (with glossy paper).

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