so here is the list i have collected.

The samsung a300 datacable seems to be the cheapest way.
CHA-01 and CHA-10 are the only working chatboards for the gp,you can get them cheap at ebay for about 1eur, and one of the following plugs for handys.
Please keep in mind that you need at least 4 pins (you can move them arround), so some chargers/headsets may not work.
also datacables are cheap for some handys, arround 3EUR.One of the names for the conenctor is 3050-18P-0.5 dont remember other ones.
CODE:
- PCB037DBE
- samsung A200/A288/A300/A300/A400/T100/R200/R210/R220/N620/N628/SGH-E100/SGH-E700/SGH-S500/SGH-E100/SGH-E600
- NEC N21i/N22i
- Sagem My-C2
- Mistubishi M320
- Alcatel 531LG G5300
If you know other models/have other sources, please share them.
Now to the building:
solder your 4 wires to the extconenctor to the pinspin/meaning/color used in picture
- 1=3.3v orange
- 9=RXD0/GPF0
- white10=TXD0/GPF2
- yellow18=Ground blue
- or (!)1=3.3v
- orange15=RXD1/GPF1
- white16=TXD1/GPF3
- yellow18=Ground blue
It could be that the orange cable (+3.3v) can only be soldered at the smd resitor, not on the pin before it,
and make sure you dont connect anything to the little golden line that is arround the chatboard.
Finish! Have fun with your new selfbuildet chatboard!Maybe some mod can create a post in faq forum with this.
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