If you are unable to connect, try to reset headphones and scan again. At the end you will hear a short bell from your headphones, which means you are connected. In case there is a popup window asking for a Pairing PIN: it is " 0000". While scanning, flip the power switch on your freshly made headphones and wait for connection. Once the battery is charged, unplug your headphones from power supply.Įnable bluetooth on your phone, tablet or computer and scan for audio devices. There is also a danger of overcharging the battery (shortens it's life and may cause overheating). Charging only requires a steady supply of at least 500mA at 3.5-4V.you can use any charging device or power supply(just don't use the middle wire from the battery), but you won't be able to see whether it is fully charged or not. I'll try to come up with more permanent solution in a few days, but this would do for now. I've used my old phone as power supply, because I only had one spare 7.5V adapter, which happened to be a charger from my battery-donor-phone =) Test power connector and power switch, before putting everything together. Do not overheat the battery, because it may stop working or explode! If your battery is loose - stick it to the back side of earphone housing and put a little hot glue to it's sides. Make sure you don't block the Bluetooth module. Once done - mount the power connector (3.5mm jack) into the hole you've drilled for it and start assembling. Attach all three wires to the power connector and then extend "+" wire to the second leg of the power switch. The middle one is used to determine whether the battery is charging(blue wire on the picture). Hot glue w/ dispensor or just SuperGlue.3.5mm Female Jack connector (mountable, not the ones you solder on PCB$) $0.30. 1mm wire (preferrably 4 different colors and at least 1m each) $0.?.3.7V LiIon battery $3.00 new (I am using really old Nokia BL-5C so it is free).Victim headphones with enough space inside to hold the battery (mine is an old beat-up Sennheiser hd 201 with 24Ohm speakers).Rotary tool or small grinder (I am using a $20 grinder bought from China).This frustrating activity (I'll let you know why in a minute) requires minimum tools/materials and at least some experience working with hand tools and soldering iron.ĪTTENTION: The new version of wireless headphones is available here The main objective is to modify your wired headphones into stereo bluetooth headset with the ability to work at least 6 hours on full charge and being able to recharge without any complications. It can be done in less than 2 hours if you are familiar with the topic, and no more than 1 evening for a complete newbie. Tired of ripping wires on your headset? Don't like the feel of being "chained" to your computer? Then you came to the right place!
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