Step 1: Materials and Tools
1. apple headphone or headphone that work with your ipod
2. two 3.5mm inline stereo sockets $1.25 each from jaycar
2. solder iron
You can use any socket you like, so if you like the old large headphones use 6.5mm stereo inline socket. I'm unsure how much a apple headphones cost because I got mine for free when I bought my i pod touch second hand :)
Step 2: Putting It Together
You will need to find which core goes to ground, which goes to L and R channels. These important to maintain the correct stereo sound out of our headphones.
2. First tin the cores with the solder iron, this will make it easy to get a good readings with your multimeter.
3. Set the multimeter to ohms scale. There are four cores in total Green (Left channel), Red (Right channel) and the two grounds: copper, green and red. See picture. To make sure you got the right core place one lead of the multimeter onto the tin core and the other to the plug. Check all cores to the tip and the two rings of the plug. If get it correct the multimeter should read 0.00 ohm or beep. See pic 1 and 2.
Alternative means of identify L and R channels of your cable.
Cut your earbuds off your cable, then strip the wire that went to your earbuds
As long your earbuds have a L or a R written on them you can use this to identify your
colour cores inside your cable.
4. Now it comes time to merge the tin cores to the socket. Twist the two grounds together and tin these cores together. Solder these two cores to the ground of the socket.
5. Plug your apple plug into your inline socket to find which pin are left and right using your multimeter.
6. Then solder the left and right channel to the stereo socket.
7. Then simply screw on the cover over the terminals.
8. Final and most important step is to check there is no shorts between left and right channels, then left channel to ground and right channel to ground. Using your multimeter on ohm scale. If there is a short it can cause damage to your electronic device.
1. Tin your cores of your apple cable and your socket cable
2. Twist the four ground cables and two left and right channels
3. Tin the four ground cables and two left and right channels
4. Solder theses cables to that additional socket
5. Then simply screw on the cover over the terminals.
Final and most important step is to check there is no shorts between left and right channels, then left channel to ground and right channel to ground. Using your multimeter on ohm scale. Once you have done that you are ready to try them out.
You can use this cable as an extension cable, as a adapter, or as a means for your friend to listen to your mp3 or apple ipod using the extra socket :)
Hope you like this instructables, please comment and rate.