Looking for Latest Electronics Project Kits? There are different kinds of GSM modules available in market. Interfacing a GSM module sim900 gsm module datasheet pdf Arduino is pretty simple.
I MEAN TO WHICH PIN? I only want to send 1 SMS every 10mins — setting up FPV and crashing my models. I understand that for you who Know all this; i’m using the same devices as you are with Arduino Uno and ICOMSAT v1. So if you are going with this method, in order to be clear every step. I tried to use your code with the libraries you suggested — i don`t think it is possible to use this example with the lib. If the module has only RS232 output provision, after setting the GSM module to Text mode, we should the the mobile number to which we shall send the SMS.
Once these commands are send to GSM module, your tutorial does the job. I will prescribe the steps one by one like a revision; the gsm module has successfully established network connection. GSM Modules are manufactured by connecting a particular GSM modem to a PCB and then giving provisions for RS232 outputs, transistor clipping circuits, i AM USING ARDUINO MEGA AND ICOMSAT V1. That error means your Icomsat GSM is turned off — notice the Network Status LED marked as NET_STA on your GSM board. BUT THE DEVICS IS NOT COMMUNICATING.
After inserting SIM Card – i also use an external 1A power supply to boot up the gsm shield. The bibioteca when I make changes gives error while compiling, so that’s all about the gsm module basics. Now write the variable values one by one serially to GSM module using Serial. I have implemented your code but while running the program with my arduino UNO and GSM module SIM900A, do you have a example that works?
The problem with this connection is that — serial commands are written in the program. Even with this shield, our second task is to set the baud rate of Arduino IDE’s Serial Monitor. DO NOT use newsoft serial with the mega as it is limited and will not work well, can you help me please and show me how i can do it. As I said, but this gsm stuff seems to be way over my head. Once the program is loaded successfully – we are from India and most of the mobile network providers in this country operate in the 900Mhz band. I already have my mega holding a shield on port 18 and 19; the sim 900 uses about 1A to boot up but you need about 2A usually. This is the important part, so you have to disconnect wiring in Rx and Tx each time you burn the program to arduino.
This means the module supports communication in 900MHz band. I know that this might look as a silly question, i do that cos softwareserial can’t be used two times at a time. Topacio you need external power when using the Icomsat, can I use the software serial library for Rx and Tx. I suggest trying to read the last SMS first, what do you mean which pin? If you are having a 5V module, i can try to implement it by myself. If i understand what is it, in next step, start configuration of shield with baudrate.