Hello Hulk, thanks for the reply. In de mean while I bought a cable and removed the “usb to serial converter”. I connected it to the arduino. With newsoftserial I can send at commands with seralmonitor. The next thing I did was loading your example so the arduino will tell the T68i to send an sms. But I get a error while compiling the example. I get some error that newsoftserial not recognize “myserial.write(26); So I changed that line to:
byte ctrlz = 26;
And now it will compile and the program works. The arduino sends an sms with the T68i.
I tried the software sserial2mobile, but it will not work because we use PDU?
So I just use your link: http://www.twit88.com/home/utility/sms-pdu-encode-decode
to convert to PDU. Can you send me an example how to read an sms from the T68i? for example when I send an sms “output 13 high” to the T68i, is it possible to read this with the arduino and the put digital pin 13 high?