✦ Step 1: Prepare a Bluetooth audio receiver.
✦ Step 2: Open the cabinet, and it is the receiver circuit board.
✦ Step 3: Now we need D882 transistor.
✦ Step 4: Transistor emitter on negative pin.
✦ Step 5: Connect a wire on L+R audio, output to transistor base.
✦ Step 6: Now add two wires for led strip on positive and on transistor collector pin.
✦ Step 7: Now time to close the cabinet.
✦ Step 8: Make a hole for two wires.
✦ Step 9: Prepare 4v leds or led strip.
✦ Step 10: Solder the wire on led strip.
✦Step 11: Now let’s test it. We can use a power bank, mobile charger or 5v power adapter to power it.
✦Step 12: Connect the bluetooth to your phone and play a song.
✦Step 13: The LED will shine with the rhythm of the song.
『D882』 ⇒ https://www.utsource.net/sch/D882
『LED』⇒ https://www.utsource.net/category/led-lighting-1.html
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