Make your MBUS cable
To make your MBUS Cable, you can use this schema provided by gsm-cables.net, that is very good.
Max232 Version
3x 4148 Diodes
1x Resistor 1k
1x Voltage regulator 78L05
2x Ceramic Capacitors
100nF
4x Electrolitic Capacitors 1 microF
2x Zenner Diodes 2V7
1x
I.C. MAX232
1x Female 9 pin serial PC conector
1x Conector phone
*(see the bottom of this page if you have problem to
find this connector)
Here the nokia 9110 Pin - Layout
A
o B X D H O X |
GND DC Jack (Signals as on PINs A,B,C) Charger Input Voltage Locking Hole RX (Serial Data
Input) SGND (Accessory Signal
Ground) External RF with Switch Locking hole |
If You have problem to find the phone connector, you can modify your standard cable.
*In the standard cable, you must connect the blu cable to the MBUS, and the black cable to the logic GND.