Introduction: DIY Bluetooth Speaker 2.0

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Hi Im back with a new project!

This time I will be making the second version of the bluetooth speaker that I made earlier last year

This speaker is incredibly easy to make and its LOUD

The amplifier board is capable of 50w!!!!

The speaker is rechargeable and lasts about 45 min, however by upgrading to a bigger battery you can lengthen the run time to hours.

This speaker is great for beginners as it takes minimal soldering and is a great impressive overall project.

Difficulty: easy..

Step 1: Watch the Video!

Click the picture to watch the video

If that does not work, here is the link

Step 2: Parts List

I got all my parts from Banggood a online store for high quality low priced electronics. They really are a great store, some of the nicest people. They even sent me some parts for this project! Be sure to tell them Constructed sent you!

Discounted Parts list

1. 12v DC battery pack:
2. Digital Amplifier Board:

3. Dremel Cutting disc:

4. Waterproof push button:

5. Voltage tester meter:

6. Case: (Was Originally $10 US, now $15)

7. Reused speakers: I got mine from a trashed computer speaker

Thats all you need

However you will need some tools such as a dremel, soldering iron, drill and hot glue gun

Step 3: Solder Voltmeter

Very simple step, take the positive of the voltmeter (2nd Image) and solder it onto the surface mount point of the batteries input positive.

Now do the same with negative

In my case, the positive was to the left of the battery input jack and negative to the right

Step 4: Add Speakers

Now take your speakers and place them where you would like to on the case.

I used a ruler to find the exact centers for the speakers

Using a black pencil, trace the outside.

With a dremel and some cutting discs (not pictured) cut the circles out. be sure to bevel the edge with a file

You should now have two holes in the case that perfectly fit the speakers, using hotglue, seal and attach the speakers to the inside of the case.

Step 5: Connect Speakers

Now get some wire and solder it to the + and - of the speakers.

run the wires down to the amplifier and connect them to their respectful spots

(Left speaker to Left speaker, Right to Right)

Step 6: You're Done!

Now just snap in the battery, flip the switch and your speaker should power on!

(If you want, cut out a rectangle in the case and stick the voltmeter through)

Remember to watch the voltmeter!

Dont forget it is a lipo battery! The battery could die and catch on fire! Dont let the voltage go to low!

This is a great project and very fun to build. I encourage everyone to try to make this project.

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