Speaker backpack

thingiverse

I wanted to pimp my backpack with the use of some Bluetooth controlled speakers, so I ordered some parts from aliexpress.com and started designing some enclosures for the speakers and the Bluetooth board. I used 2 speakers of 3W each and a 5v Bluetooth stereo board. This stereo board can be powered by any power-bank or phone charger. I also used some watertight connectors so that I was still able to disconnect the stereo board from the speakers. The total project costed approximately €12,- and it is a fun gadget. All used parts from aliexpress.com are listed here below: - The used 3W 4ohm 2" inch speakers: https://nl.aliexpress.com/item/4000355748366.html?spm=a2g0o.productlist.0.0.53db6ed5ms0EOc&algo_pvid=59be3429-8e35-4f5a-ab16-379422bbeda5&algo_expid=59be3429-8e35-4f5a-ab16-379422bbeda5-0&btsid=2100bde116093256389867731e0d16&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_ - The used 3W 5v bluetooth 4 stereo board: https://nl.aliexpress.com/item/1005001555679292.html?spm=a2g0o.productlist.0.0.1cb16a4evSlfip&algo_pvid=35630834-a9b9-439c-9a39-057a15540f79&algo_expid=35630834-a9b9-439c-9a39-057a15540f79-32&btsid=2100bde116093255909117078e0d16&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_ - The used watertight connectors: https://nl.aliexpress.com/item/32440883534.html?spm=a2g0s.9042311.0.0.27424c4dm91iIn - Some speaker-cable - Power-bank and micro-usb cable - 12x 3M screws of 18mm. A final small remark: the fit of the Bluetooth board enclosure was a very tight fit, so I recommend (depending on your printer calibration) that you might want to print those 2 files 2 to 5 % bigger. And credit for the mini octopus keychain --> https://www.thingiverse.com/thing:4146282/files And always open to feedback and/or comments.