Bluetooth Speaker

thingiverse

I've always dreamed of owning a high-quality Bluetooth speaker that I could design and build myself. So, I took the challenge and created one from scratch. This speaker is powered by two rechargeable 18650 batteries, which provide endless listening pleasure without the need to plug it into a wall outlet. The front, back, and body require additional support, so I printed these parts using PLA with a layer thickness of 0.2mm and an infill density of 15%. The seal rings, which are essential for a secure connection, were printed with NinjaFlex. To assemble the speaker, I used brass knurls that I had heated up with a soldering iron to make them pliable. They fit perfectly into their sockets when inserted straight. Please ensure they are aligned correctly. Update 19-12-2017: After some testing, I've noticed that playing music at high volumes (above the red zone on your phone) causes the connection to drop or the device to shut down. This issue is likely due to the step-up module's inability to maintain the required power for the amplifier board. I'm confident that this problem can be solved with a more powerful step-up module. To build this speaker, you'll need the following components: 1. Brass inserts: 24 pieces * https://www.aliexpress.com/item/100Pcs-M3x5mm-L-5mm-OD-Metric-Threaded-Brass-Knurl-Round-Insert-Nuts-LXM/32693221350.html?spm=a2g0s.9042311.0.0.CsvCxE 2. Power switch: 1 piece * https://www.aliexpress.com/item/5V-12V-220V-Latching-push-button-switch-locked-16mm-flat-head-fixed-Push-Button-waterproof-LED/32789351190.html?spm=a2g0s.9042311.0.0.CsvCxE 3. Bluetooth/charging and charging ready 3mm LED: 3 pieces (blue, red, green) * https://www.aliexpress.com/item/New-Arrival-300pcs-Five-Colors-3mm-Round-Bright-Light-LED-Diode-Lamp-Assortment-kit-Red-Convenient/32725226668.html?spm=a2g0s.9042311.0.0.CsvCxE 4. Battery case holder: 1 piece * https://www.aliexpress.com/item/EDT-2-piece-battery-storage-box-case-holder-for-2-x-18650-parallel-lithium-batteries/32716650716.html?spm=a2g0s.9042311.0.0.5KfgS2 5. LM2587 DC-DC Boost Converter: 1 piece * https://www.aliexpress.com/item/LM2587-DC-DC-Boost-Converter-3-30V-to-4-35V-Step-up-Power-Supply-Module-5A/32612862664.html?spm=a2g0s.9042311.0.0.5KfgS2 6. 5V 1A Micro USB 18650 Lithium Battery Charger: 1 piece * https://www.aliexpress.com/item/20Pcs-lot-5V-1A-Micro-USB-18650-Lithium-Battery-Charging-Board-Charger-Module-Protection-Dual-Functions/32469596060.html?spm=a2g0s.9042311.0.0.5KfgS2 7. Power Socket DC Block 2-Pin Wire With Nut: 1 piece * https://www.aliexpress.com/item/Quality-Copper-DC-022B-DC-Power-Socket-DC-Block-2-Pin-Wire-With-Nut-5-5X2/32762835561.html?spm=a2g0s.9042311.0.0.dgxm8s 8. 5V 2A Power Supply EU plug AC 100V-240V Converter Adapter: 1 piece * https://www.aliexpress.com/item/5V-2A-Power-Supply-EU-plug-AC-100V-240V-Converter-Adapter/1059369926.html?spm=a2g0s.9042311.0.0.M8oXrZ 9. 18650 rechargeable battery: 2 pieces * Note: You'll also need some rubber feet for the speaker's base. Good luck with your build!