Using AT commands - Motorola V3

Forum 2005-2010 (read only) Hardware Interfacing
1

I was wondering if anybody had any experience with AT commands and using serial commands to make cell phone calls?

I have been playing around with my old Motorola V3 and would like it to have my Arduino dial and initiate a phone call when a given event occurs.

I have done some research and think I have the right command to make the phone call:ATD+12125551212;

I have been sending this and other commands over the tty.usb to the phone using the serial monitor in the Arduino IDE and the phone is completely unresponsive

I will admit that I don't know much about phones but it seems to me that it shouldn't be very difficult. Is there another older GSM phone that has been interfaced with? Does anybody have any good general information I could read to get going with this? I would appreciate any help with this topic.

I think I have a really interesting project but it hinges on being able to make a phone call from a phone using Arduino and the whole thing will be Open Sourced once I get going (am going to set up a site, etc).

Thanks in advance.

c.

2

TRy to read this:

http://www.libelium.com/squidbee/index.php?title=New_GPRS_module_for_Arduino_(Hilo_-_Sagem)

It mentions something about not using Arduino serial monitor to send AT
commands because it doesen't send the CR (Carriage return)

3

Dont use arduinos serial monitor. upload the sample sketch from sparkfuns cellular shield. Once thats uploaded open up XCTU then wait for it to say
+SIND 11
+SIND 3
+SIND 4

after it says +SIND 4 then type in your at commands.

4

Thanks for the heads up and the help. I am still in the proof of concept stage and have used the pyserial library in Python to do the testing. I have ordered some hardware and will be testing as soon as it arrives. I will post some details once it arrives.