Hello i am a student of electronic engineering and i would like to make a proyect with a gps module and i want to transmit the data through gsm network. Now i can obtain the gps coordinates but i don’t know how to send it to a long distance.
Once you obtain GPS coordinates, you can easily send it via SMS or some of the GM862 EasyGPRS functions.
Do you want to use SMS or GPRS to send your location data?
now i can obtain gps coordinates with a EM406 gps module but i want to use a cellphone to send it.
The main idea is to send the position of a far object data to over the cellular link to my computer which has other cellphone conected to the rs232 port.
I need to know more about at commands to send a sms with the position and to receive it.
If it is posible i would like to send it via gprs but i dont know how to do it.
It depends on the cellphone, but most cellphones have a Hayes-style command set and you can issue commands like AT+CMGS, etc., to send SMS messages.
Sending GPRS is harder, as far as I know you’ll need to be able to speak PPP if you want to do that (but maybe there’s a way to tell your particulat phone to send a message over GPRS without setting up all the PPP/IP stuff).
Hello again
Thanks for your comments, so i have to send the data with the cellphone.
(AT+something)
But can you help me, i know nothing about sending sms.
I think different phones have different command sets, so you’ll need to find out your own phone’s commands. I can’t really help you there.
You could try downloading the documentation for the Telit GSM modules Sparkfun sells. I’ve noticed that their SMS commands are the same as my Motorola cellphone’s SMS commands, so maybe those commands are common enough to also be used by whatever phone you’re using.
The GSM SMS commands are practically defacto standard. I used my previous GSM SMS knowledge to send/receive SMS without having to read the telit documentation.
Depending on your location, you will find that SMS telemetry is more cost effective than using GPRS. For example, here in the states, you can get unlimited SMS for about $2-3/mo using the prepaid sidekick plan on tmobile.
Not bad for cheap almost free telemetry.