Modifications

'''Module:''' [http://www.geekonfire.com/index.php?main_page=product_info&cPath=7_49&products_id=78 M2011120701]

'''Module:''' [http://www.geekonfire.com/index.php?main_page=product_info&cPath=7_49&products_id=78 M2011120701]

[[File:Wifi.jpg]]

[[File:GSM-Shield-01]]

== Features ==

== Features ==

== Hardware Diagram ==

== Hardware Diagram ==

[[File:Interface Picture Instructions.jpg|center]]

[[File:GSM-Shield-02.jpg|center]]

== Getting Started ==

== Getting Started ==

[[File:GPRSP.jpg|frame|center]]

[[File:GSM-Shield-03.jpg|frame|center]]

<center>'''Easy steps to get your GPRS Shield started'''</center>

<center>'''Easy steps to get your GPRS Shield started'''</center>

=== AT Command syntax ===

=== AT Command syntax ===

The GPRS Shield can be turned on by two ways:

The GPRS Shield can be turned on by two ways:

*1, '''Hardware Triger'''; Press the '''ON/OFF Button''' about <font color="red">two seconds</font>.The power up scenarios illustrates as following figure:

*1, '''Hardware Triger'''; Press the '''ON/OFF Button''' about <font color="red">two seconds</font>.The power up scenarios illustrates as following figure:

[[File:ONs.jpg|800px|center]]

[[File:GSM-Shield-04-On-Off.jpg|800px|center]]

<center>'''Figure of Timing of turning on GPRS Shield using Hardware Triger'''</center>

<center>'''Figure of Timing of turning on GPRS Shield using Hardware Triger'''</center>

*2, '''Software Triger'''; If use this way to power up the GPRS Shield, <font color="red">JP</font> need to be soldered, then <font color="red">Digital Pin 9</font> of the Arduino will act as Software Triger port and Digital Pin 9 <font color="red">can not</font> be use as other purpose. Then give Digital Pin 9 a Turn on Impulse can power up the GPRS Shield. The power up scenarios illustrates as following figure:

*2, '''Software Triger'''; If use this way to power up the GPRS Shield, <font color="red">JP</font> need to be soldered, then <font color="red">Digital Pin 9</font> of the Arduino will act as Software Triger port and Digital Pin 9 <font color="red">can not</font> be use as other purpose. Then give Digital Pin 9 a Turn on Impulse can power up the GPRS Shield. The power up scenarios illustrates as following figure:

[[File:Pwrs.jpg|800px|center]]

[[File:GSM-Shield-05-On-Off.jpg|800px|center]]

<center>'''Figure of Timing of turning on GPRS Shield using Software Triger'''</center>

<center>'''Figure of Timing of turning on GPRS Shield using Software Triger'''</center>

<font color="red">The following code is power up subroutine for Arduino if using software triger:</font>

<font color="red">The following code is power up subroutine for Arduino if using software triger:</font>

*<font color="red">'''1, Normal power down procedure''':</font> Turn off the GPRS shield by using '''Hardware Triger'''; Press the '''ON/OFF Button''' about <font color="red">two seconds</font>.   

*<font color="red">'''1, Normal power down procedure''':</font> Turn off the GPRS shield by using '''Hardware Triger'''; Press the '''ON/OFF Button''' about <font color="red">two seconds</font>.   

The power down scenarios illustrates as following figure:

The power down scenarios illustrates as following figure:

[[File:ONd.jpg|800px|center]]

[[File:GSM-Shield-06-On-Off.jpg|800px|center]]

<center>'''Figure of Timing of turning off GPRS Shield using Hardware Triger'''</center>

<center>'''Figure of Timing of turning off GPRS Shield using Hardware Triger'''</center>

*<font color="red">'''2, Normal power down procedure''':</font> If <font color="red">JP</font> is soldered, then give <font color="red">Digital Pin 9</font>  of the Arduino(act as Software Triger) a Turn off Impulse can turn off the GPRS Shield. The power down scenarios illustrates as following figure:

*<font color="red">'''2, Normal power down procedure''':</font> If <font color="red">JP</font> is soldered, then give <font color="red">Digital Pin 9</font>  of the Arduino(act as Software Triger) a Turn off Impulse can turn off the GPRS Shield. The power down scenarios illustrates as following figure:

[[File:Pwrd.jpg|800px|center]]

[[File:GSM-Shield-07-On-Off.jpg|800px|center]]

<center>'''Figure of Timing of turning off GPRS Shield using Software Triger'''</center>

<center>'''Figure of Timing of turning off GPRS Shield using Software Triger'''</center>

<font color="red">The following code is power down subroutine for Arduino if using software triger:</font>

<font color="red">The following code is power down subroutine for Arduino if using software triger:</font>

=== Serial Port(UART) Communication ===

=== Serial Port(UART) Communication ===

The GPRS Shield is used UART protocol to communicate with an Arduino/Arduino clone; Users can use jumpers to connect (RX,TX) of the shield to either Software Serial(D8,D7) or Hardware Serial(D1,D0) of the Arduino.Detailed information is showed as the following picture:

The GPRS Shield is used UART protocol to communicate with an Arduino/Arduino clone; Users can use jumpers to connect (RX,TX) of the shield to either Software Serial(D8,D7) or Hardware Serial(D1,D0) of the Arduino.Detailed information is showed as the following picture:

[[File:Coms.jpg|frame|center]]

[[File:GSM-Shield-08-UART.jpg|frame|center]]

<center>'''Selectalbe GPRS Shield Communication Port'''</center>

<center>'''Selectalbe GPRS Shield Communication Port'''</center>

<font color="red">

<font color="red">

=== Upload Sketch to Arduino ===

=== Upload Sketch to Arduino ===

[[File:Grpsaurduinouart.jpg|600px|center]]

[[File:GSM-Shield-09-SerialRelay.jpg|600px|center]]

<center>'''Data Stream among Computer, Arduino and GPRS Shield'''</center>

<center>'''Data Stream among Computer, Arduino and GPRS Shield'''</center>