Unfortunately I couldn't finish the project before Halloween because I moved recently and didn't bring the right tools with me. However, I will continue the build and blogs. Different from my last blog Step by Step Build Trick or Trivia Halloween Candy Dispenser #4 - LED blink test, GUI Interface, today I will blog the build of audio amplifier.

 

 

Usually the sequence when I manually solder components is from low profile parts to high profile parts. To get a good sense of the soldering sequence, I temporarily placed all parts on the board without soldering.

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Starting from low profile parts such as resistor, diode and ceramic capacitors. Pay attention to the diode's polarity.

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Soldering the low profile parts and cut their extra leads.

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Next, solder the switch.

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Then solder the terminals and the amplifier IC. Pay attention the orientation of the IC.

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Next, solder the volume control rotary switch.

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Next solder three elec. capacitors. Pay attention to their polarity.

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Finally, solder the LED. Pay attention to the LED polarity.

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The back side of the completed board.

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