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MG2639 Cellular Shield Hookup Guide 

 

Introduction

The MG2639 Cellular Shield is a perfect addition to any Arduino project that 
requires connectivity when there’s no WiFi signal radiating or Ethernet drop 
nearby. The ZTE MG2639 module, which this shield is built around, 
supports 

SMS

TCP

UDP

, and can even be used to make or receive phone 

calls (imagine that!). That means you can send and receive text messages, 
or use it to remotely connect your Arduino to the Internet. To top it off, it has 
an 

integrated GPS

receiver, so it doesn’t get lost.

The MG2639 Cellular Shield is the perfect centerpiece for any remotely-
operating project – whether it’s a text-message-triggered MP3 player, an 
environmental monitor logging to data.sparkfun.com, or a new iteration of 
the Port-O-Rotary telephone.

Covered In This Tutorial

This tutorial aims to answer any and every question you have about the 
MG2639 Cellular Shield. In the beginning, we’ll focus on the hardware of 
the board – looking at the schematic, pin-outs, and jumpers on-board. Then 
we’ll discuss what assembly steps to take before connecting the shield to 
your Arduino – finding the right power supply, plugging in a SIM card, and 
so on. Finally we’ll show off the MG2639 Arduino library and document a 
series examples that demonstrate how to use the module’s TCP, SMS, and 
phone functionalities.

This tutorial is split into sections. Click the links to the right if you want to 
jump around to other sections.

Page 1 of 22

Содержание MG2639 Cellular Shield

Страница 1: ...whether it s a text message triggered MP3 player an environmental monitor logging to data sparkfun com or a new iteration of the Port O Rotary telephone Covered In This Tutorial This tutorial aims to...

Страница 2: ...requires more power than an Arduino can supply when it s powered over USB We recommend this 9V wall adapter but any power supply within your Arduino s specified input voltage range should work SIM Ca...

Страница 3: ...eld if you ve never installed a library before check this guide out Hardware Overview Before you get to connecting the MG2639 Cellular Shield to your Arduino you should familiarize yourself with the f...

Страница 4: ...use with SoftwareSerial Instead we recommend using the AltSoftSerial library with this part of the module Either of the two UARTS the cell or GPS can be switched over to the Arduino s hardware UART Ch...

Страница 5: ...B0104 level shifter It defaults to 5V but can be switched to 3 3V if your application requires Cellular UART RX and TX These jumpers allow you to switch the cellular module s RX and TX between either...

Страница 6: ...rduino s unused pins You can also instead use male headers to connect it to the Arduino If you re looking to use the shield as more of a breakout board you can solder wires directly to the pins you ne...

Страница 7: ...e SIM card into the shield The workings of the SIM card socket can take some getting used to To unlock the latch push the top part of the assembly towards the battery then lift it up Slide the SIM car...

Страница 8: ...nding a suitable SIM card the most important part of getting the MG2639 Shield working is supplying it with enough power Power Supply Requirements Depending on which state it s in the MG2639 module ca...

Страница 9: ...d to cut SJ2 and short SJ3 Jumper configuration for battery power Cut SJ2 and short SJ3 then clean it up better than we did SJ2 will prevent the 3 8V regulator from supplying a competing voltage to th...

Страница 10: ...lar Shield library depends on Download and Install the Arduino Library We ve written an Arduino library specifically for the MG2639 Cellular Shield Click the button below to download it or clone it fr...

Страница 11: ...s include SFE_MG2639_CellShield h To begin communication the cellular module and perform some set up call the cell begin function This initializing function will return with the status of the module a...

Страница 12: ...ch for help using those functions Example 1 Text Messages The library includes a fun example sketch the demonstrates how to send and receive text messages If your cellular plan has SMS ability give th...

Страница 13: ...rduino will send an SMS back to the sender with the desired information Using the Library SMS To use the SMS functionality of the library there is a second object defined as sms There are a variety of...

Страница 14: ...message sending phone and timestamp the message was sent These values are only updated after an sms read Here s an example based on the sketch Get first available unread message int messageIndex sms a...

Страница 15: ...ad allows you to go through the logs of your text messages and delete any or save them Example 2 GPRS TCP One of the most powerful aspects of the MG2639 is its ability to connect to a GPRS network and...

Страница 16: ...ion can take a while to return successfully upwards of 30 seconds if the module is just getting warmed up so be patient If you ever need to turn GPRS off use the gprs close function This function has...

Страница 17: ...connect to SparkFu n else if connectStatus 2 Serial println Received an error trying to connect Sending and Receiving As with other stream classes print write available and read functions are defined...

Страница 18: ...ve voice calls If you re using a passive microphone and speaker you can simply connect them to the differential pins on the audio port Connect the microphone pins to MIC and MIC and speaker wires to S...

Страница 19: ...G An outgoing call is in the process of dialing This status precedes ringing CALL_DIALED_RINGING An outgoing call has been dialed and is ringing on the other end CALL_INCOMING A call is coming in If a...

Страница 20: ...t while phoneStatus CALL_ACTIVE phoneStatus CALL_ IDLE if callStatus CALL_ACTIVE Serial println Other end picked up Again you can use phone hangUp to end the call unless the other party does so first...

Страница 21: ...e character at a time and don t abuse the strem Memory Limitations The MG2639 library can really test the limits of the Arduino s memory You ll notice that in most of these examples we put large const...

Страница 22: ...ar Shield should serve as a solid launching point Serial Graphic LCD Hookup Learn how to use the Serial Graphic LCD Graphic LCD Hookup Guide How to add some flashy graphics to your project with a 84x4...

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