Bluetooth headphone

thingiverse

This is a Bluetooth audio receiver for headphones that can also play MP3s from microSD or pendrive. To get started, set the layer height to 0.3 mm and use a 0.4mm nozzle - no support is needed. Make sure to buy the same modules I purchased, as other modules may have different sizes. Here are the specific parts you'll need: * 1x Bluetooth receiver HW-329-B (without FM receiver) available at https://www.ebay.it/itm/123123382658 * 1x Li-ion charger TP4056 (with a single IC) found at https://it.aliexpress.com/item/32904719549.html * 1x Li-ion battery BL-5C located at https://it.aliexpress.com/item/32921747297.html * 1x Toggle switch SS-12D00 available at https://it.aliexpress.com/item/32964400942.html * 4x M3x20 bolts with countersunk head * 4x M3 nut Wiring can be a bit tricky due to limited space, so take your time. Behind the TP4056 module, you'll need to add some insulating tape to prevent contact with the microSD reader. To make battery contacts, I used the leads of a 1N4007 diode. Keep in mind that lithium-ion batteries can be hazardous, and this project requires several soldering operations, so it's essential to have DIY electronic skills before attempting it.