Sage-Tips

How do I give a power supply to a GSM module?

Both 1.8 volts and 3.0 volts SIM Cards are supported by SIM900A – the SIM card voltage type is automatically detected.

1. Assemble GSM Antenna to the modem.
2. Connect serial cable to the modem.
3. Give power supply in between 4.5V to 12V through the power jack provided.
4. Default factory Baudrate is 9600.

How to receive SMS using GSM SIM900 module with Arduino?

SIM900 AT commands

1. set the SIM900 to text mode: AT+CMGF=1\r.
2. send SMS to a number: AT+CMGS=PHONE_NUMBER (in international format)
3. read the first SMS from the inbox: AT+CMGR=1\r.
4. read the second SMS from the inbox: AT+CMGR=2\r.
5. read all SMS from the inbox: AT+CMGR=ALL\r.

How to interface GSM SIM900A with Arduino?

1. Step 1: Material Preparation. In this tutorial, you will need :
2. Step 2: Booting Up SIM900A. Insert your SIM card to GSM module and lock it. (
3. Step 3: Pin Connection.
4. Step 4: Basic AT Command.
5. Step 5: Library.
6. Step 6: Sample Source Code.
7. Step 7: Serial Monitor.
8. Step 8: Result : Call / Redial.

How do I connect my SIM900 to my network?

Insert sim and lock it. Connect the adapter and power it. Now wait for some time (say 1 minute) and see the blinking rate of ‘status LED’ (GSM module will take some time to establish connection with mobile network) Once the connection is established successfully, the status LED will blink continuously every 3 seconds.

How do I know if I have SIM900 GSM module?

BOOTING UP THE GSM:

1. Insert the SIM card to module and lock it.
2. Connect the adapter to module and turn it ON!
3. Now wait for some time (say 1 minute) and see the blinking rate of ‘status LED’ (GSM module will take some time to establish connection with mobile network)

Can simsim900 power up from GPIO port with 5V?

SIM900 data specifications says it requires from 4.9 to 9 volts. Can it be powered up, for example, from GPIO port, which seem to be provide 5v? Answer is no, Raspberry Pi GPIO pin allowed 16mA max current per pin & 2.3 VO with the total current from all pins not exceeding 51mA.

What is simsim900 GSM/GPRS shield?

SIM900 GSM/GPRS shield is a GSM modem, which can be integrated into a great number of IoT projects. You can use this shield to accomplish almost anything a normal cell phone can; SMS text messages, Make or receive phone calls, connecting to internet through GPRS, TCP/IP, and more!

What is the default baud rate of the sim900 GSM GPRS?

To see the messages in the serial monitor, the shield and the Arduino’s serial port baud rate should be the same. The SIM900 GSM GPRS shield default baud rate is 19200. So, select the Arduino’s baud rate to 19200.

How do I use the SIM card with the shield?

To use the SIM card with the shield, you need to turn off the pin lock. The easiest way to do this, is to insert the SIM card in your smartphone and turn off the pin lock in the phone security settings.