Home Made Bluetooth Speaker for 10$

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In this instructable I will show how to make a very simple and cheap bluetooth speaker.

Step 1: Required Items

1. Card board box or any plastic box.

2. Glue gun.

3. Tape.

4. TPA3118 bluetooth amplifies brought from aliexpres for 6$.

5.Solder iron and lead.

6.Some wires.

7.Speakers brought from aliexpress for 2$.

8.9v or 12 adapter.

Step 2: Connections

Connections are very simple we can find power input slot and two input for speakers. We need to solder carefully looking gnd and vcc connections.For this bluetooth module we need to give 9v to 12v power supply. You can find detailed explanation in the video below :)

Step 3: Video Guide

Check out the video for clear understanding.

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    10 Discussions

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    roycejp

    1 year ago

    Hi,

    Thanks for this!

    Could you share the web links to purchase the board and the speakers ?

    5 replies
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    roycejpDEXTERF3

    Reply 1 year ago

    Thank you .

    However, in your video, I see you have used 3 different types of speakers (all 3 look different, at least from the mounting flanges)..

    Also your link is for 3W speakers... Is this OK ? the amp outputs 30W. If we turn up the volume wouldn't it damage the speakers ?

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    DEXTERF3roycejp

    Reply 1 year ago

    I ordered three different pairs of speakers from ali express to see which pair sounds better so that i can use best pair for my personal use . and i was testings those speakers in this project so i used 3 different types of speakers.

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    roycejproycejp

    Reply 1 year ago

    So connecting the speakers in series reduces the current drawn by them, I guess.

    Did you do any power calculations for this ?

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    DEXTERF3roycejp

    Reply 1 year ago

    Connect the speakers in series minimum 3 speakers or else use high watt speaker i used 3w speaker to make it cheap.

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    DEXTERF3patrick panikulam

    Reply 1 year ago

    Hi Patrick thanks for the comment i have checked your work its vey nice :)

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    pbosman

    1 year ago

    Nice project! I used a small Pringle tin for mine, but I like yours. - The board you are using is the TPA3118 from your photo. The TPA3110 doesn't appear to have Bluetooth capability.

    1 reply
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    DEXTERF3pbosman

    Reply 1 year ago

    hey hai, thanks for the correction my bad its TPA3118 not TPA3110 I will correct it :)