Hi there :) ,
I would like to use my old SOny Ericsson W810i or K610i to send sms.
I plan to use my arduino to send at commands.
I don't know how to interface those phone.
Here is the pinout : http://pinouts.ru/CellularPhones-P-W/se_k750i_pinout.shtml pin no. 1 = +5 v pin no. 5 = Tx RS232 pin No. 6 = Rx RS232 pin no. 9 = Gnd pin No. 10= USB Data + pin no. 11= USB Data -
It is possible to use directly the Usb d+/d- and use it as a Serial port on arduino? Or I have to find a way to convert RS232 to serial?
Thank you for your help!