GPRS Shield V2.0 - Revision history

Admin: /* Power Circuitry Change */

2015-12-16T03:42:03Z

Power Circuitry Change

← Older revision		Revision as of 03:42, 16 December 2015
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	=== Power Circuitry Change ===		=== Power Circuitry Change ===

	Replace the original LDO circuitry with DC-DC circuitry. Heat dissipation gets lower and efficiency gets higher up to 80%+. Meanwhile, the EXT_PWR jack on V1.0 was removed. V2.0 can draw current directly from Arduino now without additional 5V adapter.		Replace the original LDO circuitry with DC-DC circuitry. Heat dissipation gets lower and efficiency gets higher up to 80%+. Meanwhile, the EXT_PWR jack on V1.0 was removed. V2.0 can draw current directly from Arduino now without additional 5V adapter.

	~~<br> <br>[[]]<br>~~

	=== Soft Start Circuitry ===		=== Soft Start Circuitry ===

Admin: /* Appearance Change */

2015-12-16T03:41:51Z

Appearance Change

← Older revision		Revision as of 03:41, 16 December 2015
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	=== Appearance Change ===		=== Appearance Change ===

	~~{\| class="FCK__ShowTableBorders" align="center"~~
	\|-
	~~\| [[]]~~
	~~\| [[]]~~
	\|}

	1) V2.0 adopts a standard shield outline as well as a protective shell;		1) V2.0 adopts a standard shield outline as well as a protective shell;

Admin: /* Solutions for No Registration to Network */

2014-07-09T01:41:46Z

Solutions for No Registration to Network

← Older revision		Revision as of 01:41, 9 July 2014
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	== ~~Solutions for No Registration~~ to ~~Network~~ ==		== instructions to test the communication ==
	~~=== Solutions ===~~
	If you are using a Router rather than a modem or Exchanger, before networking testing for the GPRS module, you should pay attention to the following tips.		If you are using a Router rather than a modem or Exchanger, before networking testing for the GPRS module, you should pay attention to the following tips.

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	[[Media:For gprs networking test.rar]]		[[Media:For gprs networking test.rar]]



	== HOW TO BUY ==		== HOW TO BUY ==

	Click here to buy [http://www.geeetech.com/updated-gprsgsm-sim900-shield-v2-board-arduino-compatible-p-779.html GPRS Shield V2.0]		Click here to buy [http://www.geeetech.com/updated-gprsgsm-sim900-shield-v2-board-arduino-compatible-p-779.html GPRS Shield V2.0]

Admin at 02:20, 8 July 2014

2014-07-08T02:20:09Z

← Older revision		Revision as of 02:20, 8 July 2014
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	<br>		<br>



			== Solutions for No Registration to Network ==
			=== Solutions ===
			If you are using a Router rather than a modem or Exchanger, before networking testing for the GPRS module, you should pay attention to the following tips.

			1. Specify a fixed IP address for Local Host，hereinafter referred to as "Local Host IP".

			2. Set a Port Mapping on the Router and map the port to Local Host IP. We call the set port "Local Host Port". Local Host Port is within 0 and 65535.

			3. Open home page (Google), input "IP" to check your Public IP.

			[[File:Gprs_(2).jpg\|500px\|]]

			=== FAQS ===
			Q1. Why should I specify a "Local Host Port" on the Router (Port Mapping)?

			ADSL dials through a router and the host shares network through the router. In this case, the host usually extracts Private IP such as 192.168.x.x. for such reasons, only when you specify a ‘Local Host Port’ on the Router (Port Mapping) and forward it to the corresponding Local Host, can the Internet access to the Local Host through this Port.


			Q2. Why should I specify a Fixed Private IP for the Local Host?

			Port Mapping is a one-to-one process. If the Local Host is specified to obtain IP automatically, the IP address will probably change when the computer restarts or reconnects to the network. Therefore, it is necessary to specify a Fixed Private IP.

			=== Tools ===
			1. Arduino IDE

			2. Net Assist

			3. STC-SIP

			=== Steps ===
			1, Start the "Net Assist", choose "TCP server" in the dropdown menus of "protocol" (UDP Server is not recommended), change the "Local Host IP" into the Fixed IP. Input the "Local host port" set before and then click “Connect “. As shown in following the picture.

			[[File:Gpr5s.jpg\|500px\|]]

			2, Open STC-ISP and click "COM Helper"
			Click "COM Port" and click 115200 in "Baud rate" ( if the code is unreadable in RX Buffer, then re-click Baud rate) , click "Open COM"

			[[File:Gprs (2a.jpg\|500px\|]]

			Input the following code in the text box of "TX Buffer" and then press "Enter".

			AT+CLPORT="TCP","2022"

			Click "Send Data". If the "RX Buffer" shows "ok", it is successful.

			OK

			[[File:Gprs (3).jpg\|500px\|]]

			[[File:Gprs (4).jpg\|500px\|]]

			Input in "TX Buffer" as follows,


			AT+CIPSTART="TCP","183.37.246.171","10000"

			(NB.IP “183.37.246.171” is a Public IP from Google; “10000” is the “Local Host Port”).
			And then click "Send Data". The "RX Buffer" will appear

			OK
			CONNECT OK

			as follows, which means the data has been sent successfully.
			Now it can realize the TCP communication.

			[[File:Gprs6.jpg\|500px\|]]

			3, Verify the success of communication
			Input

			AT+CIPSEND

			in "TX Buffer", then press "Enter". Click "Send Data" and the "RX Buffer" appears

			>

			as follows.

			[[File:Gprs7.jpg\|500px\|]]

			Input

			HELLO WORLD

			in "TX Buffer" and click "Send Data", check "HEX-Mode".

			Meanwhile, input

			1A

			to end instruction and click "Send Data". It is successful when you see

			SEND OK


			[[File:Gprs8.jpg\|500px\|]]

			[[File:Gprs9.jpg\|500px\|]]

			Now,"Helloword" will appear in "NetAssist".

			[[File:Gprs10.jpg\|500px\|]]

			Select the corresponding IP address and click "Send".
			"RX Buffer" dialog in STC-ISP will accept the information returned as below.


			[[File:Gprs11.jpg\|500px\|]]

			PS:

			[[Media:For gprs networking test.rar]]

Admin at 03:25, 6 May 2014

2014-05-06T03:25:08Z

← Older revision		Revision as of 03:25, 6 May 2014
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	<br>		<br>


			== HOW TO BUY ==

			Click here to buy [http://www.geeetech.com/updated-gprsgsm-sim900-shield-v2-board-arduino-compatible-p-779.html GPRS Shield V2.0]

Admin: /* Introduction */

2014-05-06T03:14:40Z

Introduction

← Older revision		Revision as of 03:14, 6 May 2014
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	== Introduction ==		== Introduction ==

	[[File:GPRS V2.jpg] ~~width:100px height:100px~~ ]		[[File:GPRS V2.jpg]]

Admin: /* Introduction */

2014-05-06T03:14:07Z

Introduction

← Older revision		Revision as of 03:14, 6 May 2014
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	== Introduction ==		== Introduction ==

	[[File:GPRS V2.jpg width:100px height:100px]]		[[File:GPRS V2.jpg] width:100px height:100px ]

Admin at 03:13, 6 May 2014

2014-05-06T03:13:06Z

← Older revision	Revision as of 03:13, 6 May 2014
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		== Introduction ==

		[[File:GPRS V2.jpg width:100px height:100px]]

Admin: /* Resource */

2014-05-06T02:36:23Z

Resource

← Older revision		Revision as of 02:36, 6 May 2014
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	<br>		<br>

	~~== Resource ==~~

	~~[http://www.seeedstudio.com/wiki/File:GPRS_Shield_eagle_file.zip#filelinks GPRS Shield Eagle File]~~

	[http://www.seeedstudio.com/wiki/images/3/32/GPRS_Shield_V2_Schematic.pdf GPRS Shield V2 Schematic.pdf]<br> [http://www.seeedstudio.com/document/SIM900datasheeet.zip SIM900 Datasheeet]<br> [http://garden.seeedstudio.com/images/a/a0/SIM900_ATC_V1_00.pdf AT Commands v1.00] & [http://garden.seeedstudio.com/images/a/a8/SIM900_AT_Command_Manual_V1.03.pdf AT Commands v1.03] & [http://garden.seeedstudio.com/images/e/e3/SIM900_HD_V1.05.pdf Hardware Design] - SIM900 Documentation<br> [http://garden.seeedstudio.com/images/8/87/SIM900_firmware_and_tool.zip SIM900 firmware and tool(firmware:1137B08SIM900M64_ST)] for firmware upgrade<br>
	~~[http://seeedstudio.com/wiki/images/3/37/SIM_900_AGPS_instructions.zip SIM_900_AGPS_instructions]SIM_900_AGPS_instructions<br>~~

Admin: /* Fun with AT Commands */

2014-02-25T10:41:20Z

Fun with AT Commands

← Older revision		Revision as of 10:41, 25 February 2014
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	#The GPRS Shield can send SMSes in two modes: Text mode and PDU (or binary) mode. To send out a human readable message, select the text mode by sending AT command "AT+CMGF=1". If succeeds, The GPRS Shield will respond with an '''OK'''.		#The GPRS Shield can send SMSes in two modes: Text mode and PDU (or binary) mode. To send out a human readable message, select the text mode by sending AT command "AT+CMGF=1". If succeeds, The GPRS Shield will respond with an '''OK'''.
	#To enter the number of your target phone, tick "SendNew" option and send AT+CMGS="136*****556". This will instruct the GPRS Shield to send a new message to the phone number specified (replace the number with the phone number of your target phone). The GPRS Shield will send a'''>''' to remind you of typing the message. Please note that phone number specified as parameter in any AT command must be in [http://en.wikipedia.org/wiki/E.123 E.123 format].		#To enter the number of your target phone, tick "SendNew" option and send AT+CMGS="136*****556". This will instruct the GPRS Shield to send a new message to the phone number specified (replace the number with the phone number of your target phone). The GPRS Shield will send a'''>''' to remind you of typing the message. Please note that phone number specified as parameter in any AT command must be in [http://en.wikipedia.org/wiki/E.123 E.123 format].
	#After entering your message, tick "send hex" option and then send a hex: 1A. The modem will accept the message and respond with an OK. A few moments later, the message should be received on the handset whose number you had specified. I sent "How are you ?". You can check the histroy by clicking "EXT". The commands histroy is listed below "Set Multi Char". <br>[[~~Image:Send a text message.jpg~~]]<br> '''NOTE:''' If, in spite of following the steps as specified above, you're unable to receive the message on the target handset, you might need to set the SMS Message Center number. Send the following command between the AT+CMGF and AT+CMGS commands:AT+CSCA="+919032055002". Replace the phone number specified with the SMS Center number of your GSM Service Provider. The message center number is specific to each service provider. You can get the message center number by calling up the customer care center of the GSM Service Provider and asking them for it.		#After entering your message, tick "send hex" option and then send a hex: 1A. The modem will accept the message and respond with an OK. A few moments later, the message should be received on the handset whose number you had specified. I sent "How are you ?". You can check the histroy by clicking "EXT". The commands histroy is listed below "Set Multi Char". <br>[[]]<br> '''NOTE:''' If, in spite of following the steps as specified above, you're unable to receive the message on the target handset, you might need to set the SMS Message Center number. Send the following command between the AT+CMGF and AT+CMGS commands:AT+CSCA="+919032055002". Replace the phone number specified with the SMS Center number of your GSM Service Provider. The message center number is specific to each service provider. You can get the message center number by calling up the customer care center of the GSM Service Provider and asking them for it.

	'''Step 3: Make a telephone call with the AT commands'''<br>		'''Step 3: Make a telephone call with the AT commands'''<br>

	# Restart the SIM900 if switching from sending texts to making phone calls.		# Restart the SIM900 if switching from sending texts to making phone calls.
	# Replace the phone number with your target number in the command “ATD186*****308;”(without the quotes) and press Enter key to send it out. If it succeds, a message "ATH OK" will show up as the picture below. Otherwise, "No CRRLIER" will show up instead. The reason might be unexistent phone number or incorrect command format. <br>[[~~GPRSshieldV2.png~~]]'''<br>'''		# Replace the phone number with your target number in the command “ATD186*****308;”(without the quotes) and press Enter key to send it out. If it succeds, a message "ATH OK" will show up as the picture below. Otherwise, "No CRRLIER" will show up instead. The reason might be unexistent phone number or incorrect command format. <br>[[]]'''<br>'''

	'''Step 4: Exploring Further'''		'''Step 4: Exploring Further'''