A small Bluetooth speaker to make yourself. It is a very interesting project that is cheaper. Personally, this project cost me only 10€ ( = 10.85$ in March 2024) without the price of filament.

If you are doing the project, you will need a power supply to power the 3.7V batteries in series (11.1V). You will need a power supply that can recharge the battery pack properly.

Step 1 : Put the Batteries Indicator.

Step 2 : Put the grid (with the location of the speakers towards the inside) and the speakers.

Step 3 : Put batteries.

Step 4 : Put Bluetooth Card and the femalle Connector.

The components :

Speakers 8 ohms, 0.5W, 57mm : https://fr.aliexpress.com/item/1005004778263356.html?gps-id=pcStoreLeaderboard&scm=1007.22922.271278.0&scm_id=1007.22922.271278.0&scm-url=1007.22922.271278.0&pvid=3311eaad-8f86-4e3b-88b9-4f0ae0926eba&_t=gps-id%3ApcStoreLeaderboard%2Cscm-url%3A1007.22922.271278.0%2Cpvid%3A3311eaad-8f86-4e3b-88b9-4f0ae0926eba%2Ctpp_buckets%3A668%232846%238114%231999&pdp_npi=4%40dis%21EUR%212.84%211.42%21%21%2121.60%2110.80%21%40210387dd17093355632598722ee30a%2112000032211882743%21rec%21FR%21%21AB&spm=a2g0o.store_pc_home.smartLeaderboard_2003295860377.1005004778263356&gatewayAdapt=glo2fra (These are not the ones I took, but the size and power are the same).

Batteries 3.7V : https://fr.aliexpress.com/item/1005006178386348.html?spm=a2g0o.productlist.main.7.4ab86a20M63J2E&algo_pvid=d4257a51-abc2-42a7-b7e4-496a32a299ba&algo_exp_id=d4257a51-abc2-42a7-b7e4-496a32a299ba-3&pdp_npi=4%40dis%21EUR%2111.47%214.59%21%21%2187.35%2134.94%21%40210384b217094038708262125ec4f7%2112000036153324548%21sea%21FR%210%21AB&curPageLogUid=L1imJjXG5PZP&utparam-url=scene%3Asearch%7Cquery_from%3A (this for exemple).

Bluetooth Card : https://fr.aliexpress.com/item/32771056286.html?spm=a2g0o.productlist.main.1.77032fbakbRYJ9&algo_pvid=bd4a13ae-8222-4a83-8cf7-0af672d295a2&algo_exp_id=bd4a13ae-8222-4a83-8cf7-0af672d295a2-0&pdp_npi=4%40dis%21EUR%211.04%210.95%21%21%211.10%211.01%21%40210384b217094039769705783ec4f7%2110000013192470165%21sea%21FR%210%21AB&curPageLogUid=Nm6AzUMtirj3&utparam-url=scene%3Asearch%7Cquery_from%3A

Switchs : https://fr.aliexpress.com/item/1005001694569310.html?gatewayAdapt=glo2fra

Batteries Indicator : https://fr.aliexpress.com/item/1005001782155135.html?gatewayAdapt=glo2fra

Connector : https://fr.aliexpress.com/item/1005005601514426.html?spm=a2g0o.productlist.main.41.2d0e3f5coDC1jm&algo_pvid=2b04fe97-f11a-4699-8402-b7d942076581&algo_exp_id=2b04fe97-f11a-4699-8402-b7d942076581-20&pdp_npi=4%40dis%21EUR%213.63%210.49%21%21%213.84%210.53%21%40210384b217094042524796747ec4f7%2112000033708761637%21sea%21FR%210%21AB&curPageLogUid=LGMJS0IUP6TQ&utparam-url=scene%3Asearch%7Cquery_from%3A