Introduction: Add a Cool Features to USB Speaker
In this project, I have added an extra feature to a simple USB speaker.
Step 1: How It Works
Step 2: Materiel Required
1) BC547 Transistor X3
2) 100K Resistor X1
3) 10K Resistor X2
4) 104 Ceramic capacitor X1
5) LED X2
6) Dotted board
Step 3: Open Your Speaker
Step 4: Make Circuit Board
I have made PCB. You can make PCB or you can make circuit board using a dotted board.
If you don't know how to make PCB, watch these video.
Basic PCB designing in EAGLE | Part 1
Basic PCB designing in EAGLE | Part 2
How to print PCB at home | Part 3
These are PCB files:
Step 5: Connection
Connect your pcb with audio signal and 5V power supply.
Note: Don't connect any connection with IC output or input.
Step 6: Make Hole
Make two holes for attaching LED.
Step 7: Connect LED and Fix It
Solder some wire with LED to freely attaching LED anywhere in the speaker.
Now fix these LEDs using a glue gun.
Step 8: Assemble
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