GSM Shield on an Arduino Mega tutorial

Dear friends welcome back! Many of you have asked me to make a video about using the TinySine GSM Shield with an Arduino Mega. So, here it is. If you need to use the GSM Shield with an Arduino Uno, check our previous video.

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WHERE TO BUY
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1. Arduino Mega: https://educ8s.tv/part/ArduinoMega

2. GSM Shield: https://educ8s.tv/part/GSMShield

3. Powerbank: https://educ8s.tv/part/Powerbank

4. Wires: https://educ8s.tv/part/Wires

Full disclosure: All of the links above are affiliate links. I get a small percentage of each sale they generate. Thank you for your support!

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We are on the computer now. First of all, you have to download the TinySine GSM library and unzip it in your Arduino libraries folder. You can find a link in the description of the video in order to download a library. Then, we have to make two changes in some files in the library itself. First, we modify the GSM.h file. We open it with Notepad++ for example, we uncomment this line here, line 5, and comment line 4, in order to inform the library that we are using an Arduino Mega instead of an Arduino Uno and we press save. Next, we modify HW.h file. We open it and uncomment the first line in order to inform again the library that we are using an Arduino Mega. Now, we save it and we are ready to open Arduino IDE. Okay, we have opened Arduino IDE 1.0.6 and we have loaded the SMSSender.ino program. IMPORTANT! The TinySine library does NOT work with Arduino IDE later than version 1.0.6. Be sure that you are using Arduino IDE 1.0.6. Now, modify this line here and enter your own phone number. Now, you can press upload to upload this program to your Arduino Mega.

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LIBRARIES
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? TinySine GSM Library: http://www.tinyosshop.com/datasheet/GSM_GPRS_GPS_Shield_GSMSHIELD.rar

Be sure you have not connected the GSM to your Arduino when pressing upload. The program sends an SMS message to a phone number and then waits for incoming messages. Let’s now see how to connect the GSM Shield to the Arduino Mega. The shield has two jumpers. We have to remove them in order to use this shield with an Arduino Mega. Now, we have to connect TX pin from the GSM Shield to TX1 pin on the Arduino Mega. Then, we have to connect RX pin from the GSM Shield, to the RX1 pin on the Arduino Mega. Now, we are ready to connect the GSM Shield with Arduino. Let’s do it. Okay.

The GSM Shield is now connected, let’s power Arduino up and see if it is working. I have placed my cell phone here, in order to see the incoming message. As you can see, the LEDs are flashing here in the GSM Shield, when the blue led is flashing slowly, it is connecting to the GSM network. Let’s wait for a second. Okay, it is now connected. Any moment now, we will receive the SMS message to the cell phone here. Let’s see. Okay, it is now sending the SMS. Okay, here it is. Sms from Arduino Mega 2560. That’s it. These are the steps required to use the TinySine GSM Shield, with Arduino Mega 2560. Unfortunately, the provided with the Shield library only works with Arduino IDE 1.0.6 on Arduino Mega. Also, it requires some file modifications so, it is easier to just use an Arduino Uno instead.