Modem is used to send and receive SMS like mobile phone, to read and write SMS using serial communication. The data format used is AT Command. Modem used is GSM Module with SIM900A type. As the data viewer of communication result, used Serial Monitor on Arduino IDE.
Hardware Requirement
- Arduino Uno Board
- SIM900A GSM Module (you can also use Wavecom)
- Power supply +5 Volt
- Jumper
Block Diagram
Schematic
Arduino - SIM900A
Source Code = Blank Code
void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
How it Works
1. Connect the Arduino with Peripherals needed.
2. Plug in the Power Source on the device.
3. Add some library if needed
4. Compile and upload the script program5. Open the serial monitor of Arduino IDE
6. Type "AT" then enter, and type "AT+CGMM" and enter again
7. If the response from the modem is as in the picture below, then the modem is normal or
can used.
Video for Project V - 6. Arduino Communication with Serial Modem
Required file
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