Introduction: Make Your Own 3.5mm 4 Pole Jack With Button for Autocom 200

Picture of Make Your Own 3.5mm 4 Pole Jack With Button for Autocom 200

Most of the reasoning behind this project is I couldn't find this audio cable with a button for answering or initiating a phone call while riding a motorcycle.
Autocom makes a cable for it, but without the button to activate voice command it makes it dangerous to operate your phone while riding. 
My phone is also not one those models that you can set to auto answer, so without the button, I cannot answer the phone while hearing it ring in the speakers of the headset without touching the phone otherwise.

Very good solder skills are needed for this. Tinning, pre soldering the wires and area to be soldered to, will help with success.
Two 3.5mm 4 pole hands free devices were used for the parts to solder my own wires to. The wires that come in hands free devices are probably 24 gauge wire at best. A wire gauge I chose is approximately 18.
Once completed you will be able to operate your phones' voice command or answer incoming calls with the push of a button.


moddy (author)2013-01-18

I did not write this up very well. There is a question of whether or not from the phone jack ground, goes to the autocom mic or not. What I do know, is after I dialed a phone call and was talking with my autocom, what activated a call or hung up was a wire from the ground and mic coming to the button that would intiate a call/answer, or hang up. If I were to start this project over, I would start with the phone side
Tip - Left Speaker
Ring1 - Right Speaker
Ring2 - Mic
Sleeve - Gnd

to Autocom wire for wire. If it doesn't work, then cross the 3rd and 4th pole wires, then they should hear you. The only reason for the extra wiring is to have a hands free button while riding. Otherwise, a button isn't needed, only the correct wiring.

moddy (author)moddy2013-01-31

Try this link. It is where I first found the schematics to do this project, I had forgotten about this when I made the instructable.

atoughram (author)2013-01-18

The pinout for Aux1 on the Autocom is:
Tip - Mic
Ring1 - Speaker
Ring2 - +9vdc
Sleeve - Gnd

The pinout for a generic phone headset is

Tip - Left Speaker
Ring1 - Right Speaker
Ring2 - Mic
Sleeve - Gnd

So did you connect the following??
Autocom Phone
Tip ----------------Ring2
Ring1 ------------Tip&Ring1
Ring2 ------------ No connection
Sleeve ----------- Sleeve

Thanks in advance

atoughram (author)2013-01-17

Do you happen to have the scematic for this project? I need to know how to wire it.

moddy (author)atoughram2013-01-17

I looked over this instructable and there isn't a schematic, for it isn't powered. How to make this work is literally in each step. The button only temporarily grounds the 3rd and 4th pole wires, just like the 5.00 hands free microphone for cell phones. Hope this helps.

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