Gsm Gprs Shield
User Manual: gsm gprs shield
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GSM / GPRS SHIELD FEATURES & SPECIFICATIONS • Industry proven SIMCOM SIM900D Module • Buffered UART provides additional layer of protection • Fused power input • On board LDO voltage regulator • UART/SUART switch selectable port (gizDuino) • On board manual power switch • SIM Card Holder GSM/GPRS Modem (Shield) Hardware Manual Page 1 of 9 GENERAL SPECIFICATIONS Power Input: 5V-7.5VDC @ 1.5A I/O Interface: UART 3.3V Logic 5V Tolerant LED Indicators: Power Network Status PCB Dimensions: 53.5W x 69L mm © Copyright 2012 by e-Gizmo Mechatronix Central All Rights Reserved Major Components Presentation Top Bottom Figure 1. GSM/GPRS Major Parts ID & Presentation (Top & Bottom). We develop a GSM/GPRS modem circuit board that is compatible with Arduino™ or on our own version of Arduino™, the gizDuino™. These kinds of circuit is known as “Shields”, an easy to install and compatible pins that fits to gizDuino™ or any other Arduino™ compatible clones. With the power of SIM900D (the module that was used to our GSM/GPRS modem (Shield)), the utilization of SMS and voice can be initiate a remote control command from any range that the network service provider covers. Not all the pins of sim900d was used to inline the compatibility of the shield to any gizDuino™ compatible controllers, but the unused pins of SIM900d may yet be used because we put the uncommitted ports to each pin that is ready for interfacing and soldering. We also implement a mini SIM card slot & holder for (ISO/IEC 7810:2003, ID-000) SIM cards, that will act as the medium in connecting to a network provider. , We also attached 3 LED indicators for easy power, command status, & network status checking, UART – SUART switch for, a built in Antenna slot for wider signal range, and a jamming port for controlling the power switch of the shield through codes or command. GSM/GPRS Modem (Shield) Hardware Manual Page 2 of 9 © Copyright 2012 by e-Gizmo Mechatronix Central All Rights Reserved Pin I.D. & Descriptions JP1 Details & Pin Assignment Pin I.D. Description RST Reset Pin 3.3V 3.3V Device Power Supply Pin I.D. Description 5V 5V Device Power Supply 7 Digital I/O GND Ground 6 Digital I/O GND Ground 5 Digital I/O VIN 8-12V Device Power Supply 4 Digital I/O 3 Digital I/O / SUART mode (Transmit) JP4 Details & Pin Assignment 2 Digital I/O / SUART mode (Recieve) TX Digital I/O / Transmit RX Digital I/O / Recieve JP2 Details & Pin Assignment Pin I.D. Description A0 Analog In / Digital I/O A1 Analog In / Digital I/O A2 Analog In / Digital I/O Pin I.D. Description A3 Analog In / Digital I/O PWR Power indicator A4 Analog In / Digital I/O MC2N Auxiliary positive and negative voiceband input A5 Analog In / Digital I/O MC2P Auxiliary positive and negative voiceband input MC1N Positive and negative voiceband input MC1P Positive and negativevoiceband input JP3 Details & Pin Assignment Pin I.D. Description AREF analog reference pin for the A/D Converter. - - 13 Digital I/O 12 Digital I/O 11 Digital I/O 10 Digital I/O 9 Digital I/O 8 Digital I/O GSM/GPRS Modem (Shield) Hardware Manual Page 3 of 9 SIM900D open interfacing pin ports Details & Pin Assignment AGND Analog Ground SP1P Positive and negative voiceband output SP1N Positive and negative voiceband output SP2N Auxiliary positive and negative voiceband output SP2P Auxiliary positive and negative voiceband output TEMP Battery temperature VCHG Voltage input for the charge ADCO General purpose analog to digital converter SIM900D open interfacing pin ports Details & Pin Assignment Pin I.D. Description RI Ring Indicator DRXD Serial interface for debugging and firmware upgrade DTXD Serial interface for debugging and firmware upgrade CTS Clear to send RTS Request to send DTR Data terminal ready DCD Data carry detect NETL Net status indicator GPO1 Normal output port © Copyright 2012 by e-Gizmo Mechatronix Central All Rights Reserved How to test GSM / GPRS Shield Using with gizDuino microcontroller Figure 2. First, connect the gizDuino to your PC to upload the sample sketch for GSM/GPRS shield. After connecting the gizDuino to your PC, open the the CD (included in purchasing the kit.) and go to ‘e-Gizmo KITS‘>’ GSM-GPRS (Shield)’>’ Sample Arduino Sketch’>’ GSM_Shield_test’>’ GSM_Shield_test’, and after opening the sample sketch, you need to edit some codes. Find the line containing codes like this ( send_msg(“09232814046”, “this is the message area edit here.”); ) , on the first quotation mark insert the reciever’s number, and on the second quotation mark input any alphanumeric characters (it will serve as the message). After editing the codes, upload the sketch and wait until the uploading is complete and do not remove the USB cable. Figure 3. Install the GSM/GPRS shield to the gizDuino microcontroller.. After installing the GSM/GPRS shield to the microcontroller, put a 5 to 9V power supply to the GSM/GPRS shield, the Power status LED Indicator should turn green upon supplying. Next install the antenna, and SIM card and switch the the ‘Serial programming switch‘ to “UART“ and then press the ‘Power button switch’ approximately 1-5 seconds until the status LED indicator turn red, the Network indicator will blink fast upon turning on, wait until the blink has 2-3 seconds blink delay; it means the signal of the GSM/GPRS shield is stable. if the network indicator’s blink is stable press the reset button once and wait until the number indicated in the sample sketch recieve the message. Note: the network indicator LED may take a long time before getting to a stable state depending on the network’s signal, make sure that the antenna is attached for more signal strength, and the SIM card you install have “load” that can call or text depending on your program. GSM/GPRS Modem (Shield) Hardware Manual Page 4 of 9 © Copyright 2012 by e-Gizmo Mechatronix Central All Rights Reserved How to test GSM / GPRS Shield GSM/GPRS Shield to PC Figure 4. A example Interface of GSM/GPS Shield (PC to USB-UART Serial Converter to GSM/GPRS Shield) In testing the GSM/GPRS shield directly to you PC, we also need a 5-9V external power supply for the shield, a programming dongle in this case we will use our USB-UART Serial TTL Converter, wires to connect the shield to the programming dongle, a SIM card, USB Cable type ‘A’ to type ‘B’, and ofcourse your PC with Hyperterminal application (Hyperterminal is not available in windows vista and windows 7 but it was downloadable through the internet.). Now attach all the said components needed to run and test the GSM/GPRS shield just like the illustration above (Figure 4.). After setting up all the components needed, press the power button and hold the power button until the the status LED indicator turn red (just like on how we test the shield using gizDuino microcontroller) and wait until the Network LED indicator blink normally. Now we need to open the Hyperterminal, in opening the Hyperterminal just follow these steps (in windows XP) Click “start”>, ”All programs”>, “Accessories“>, “Communications“>, and finally “Hyperterminal“. After opening it, the connection wizard will apear and follow these steps: GSM/GPRS Modem (Shield) Hardware Manual Page 5 of 9 © Copyright 2012 by e-Gizmo Mechatronix Central All Rights Reserved How to test GSM / GPRS Shield GSM/GPRS Shield to PC First, enter the name of your connection Second, Replace this with the COM port in which the GSM modem is attached to. To know which ‘COM’ you used, go to (“My Computer”>, “Properties“>, hardware tab>, “Device Manager”>, “Ports”>). The third step is to configure the COM port parameters. These parameters are the ‘Baud Rate’ or ‘Bits per second’, ‘Data bits’, ‘Parity’, ‘Stop bits’, and ‘Flow control’. Each of these must be set according to the values found on the figure to the left. just click the restore default button and then click ‘OK‘. And last step is typing ‘AT Commands’, type the commands indicated bellow. Edit this field and enter the Cellphone number that will recieve the test message and press “Enter“ Edit this field and enter the text message, and press (CTRL+Z) to send. GSM/GPRS Modem (Shield) Hardware Manual Page 6 of 9 © Copyright 2012 by e-Gizmo Mechatronix Central All Rights Reserved How to test GSM / GPRS Shield List of basic 'AT Commands’ The charactersrepresent a ‘Carriage Return’ command. It is simply Display SIM number: AT+CNUM an ‘ENTER’ key command on the keyboard. Show operator network: AT+COPS? Type: AT Show signal quality: AT+CSQ GSM Response: OK Display an SMS message: AT+CMGR=1 (This is just the commands previously done.) (If there are no messages in storage of the SIM card, it will return an ‘Error’ message.) Type: ATE1 Display all SMS messages: AT+CMGL=”ALL” GSM Response: WARNING: If there are large amounts of SMS messages in the SIM card, OK this command will flood your HyperTerminal with SMS messages. (This command tells the GSM Modem to echo the characters you type into the Hyper Terminal, which allows the display of every character Send an SMS message: AT+CMGS=”SIM number” typed.) User Message For example, if the user types in AT+CMGS=”09123456789” and exeType: cutes ‘ENTER’, and types in for the message ‘Hello There!’ (excluding the AT+CMGF=1 apostrophes) and presses down both ‘CTRL’ and ‘Z’ simultaneously, the GSM Response: GSM modem will send a ‘Hello There!’ message to the desired number. OK Note that this will cost an amount of credit or load depending on the (This command tells the GSM Modem to display SMS messages in the network service provider. Human Read able Text Format.) Show list of all available commands: AT+CLAC Type: AT+CMEE=2 Switches GSM Module power to OFF: AT+CPOWD GSM Response: OK For more information regarding all the available commands of the GSM (This command lets the GSM Modem report any errors found in a read- module, the user may refer to the SIM900D ‘AT Command’ manual. able format.) Type: AT+CFUN=1 GSM Response: OK (This command sets all the GSM Modem functions to be available to the user.) Type: AT+COPS=0 GSM Response: OK (This command lets the GSM Modem functions choose an available network operator automatically. The process may take some time to complete, and its completion is marked by the ‘OK’ response. This usually takes around 30 seconds to complete.) Type: AT+CPAS GSM Response: OK (Whenever this command is executed during the processing time from the above command, it reports on the status of the loading process. When the GSM modem is still loading, it will respond with an ‘OK’. Otherwise, if it is done it will respond ‘Ready’. If the GSM modem responds an ‘Error’ up until a minute then the problem may result in the improper attachment of the SIM card. To remedy this, turn off the GSM modem power, carefully reattach the SIM card and check if it is properly placed, and resume with the start up process once again.) GSM/GPRS Modem (Shield) Hardware Manual Page 7 of 9 © Copyright 2012 by e-Gizmo Mechatronix Central All Rights Reserved D2 Q1 A5 A4 A3 A2 A1 A0 TX RX JP2 PowerON R2 6 5 4 3 2 1 D1 RES1 Q2 LED HEADER 6 2 4 6 8 10 12 HEADER 6X2 VBAT NPN R6 1 CLOCK 3 C6 5 2 4 Vcc SIM 100n U2 RESET 5 RXD 22 22 22 4 GND 6 C4 224 S3 3 TX 1 74LVC1G125 S2 18 19 20 21 22 23 24 25 26 3 C5 SW DPDT VBAT 100n SW-PB PowerON U3 4 2 TXD 3 74LVC1G125 1 Q3 5 RX 2 R7 R8 R9 Module1 SIM340D NPN JP7 1 3 5 7 9 JP8 2 4 6 8 10 1 3 5 7 9 HEADER 5X2 HEADER 5X2 D4 DIODE Figure 5. Schematic diagram of GSM/GPRS Shield. VBAT 2 4 6 8 10 Hardware Manual Page 8 of 9 VBAT DATA 10 K 2 DBG_RXD DBG_TXD RXD TXD STATUS SIM_DATA SIM_CLK SIM_RST SIM_VDD KBR0 RI PWRKEY DISP_CLK DISP_DATA VRTC DISP_D/C GND MIC2P MIC2N MIC1N MIC1P AGND SPK1P SPK1N SPK2N SPK2P CON1 1 2 RXD 3 TXD 4 5 6 7 8 9 10 11 12 13 14 15 16 17 GND NC DISP_CS CTS RTS DTR DCD NETLIGHT GPO1 48 47 46 45 44 43 42 41 40 HEADER 8 1 3 5 7 9 11 R3 RES1 GSM/GPRS Modem (Shield) 7 6 5 4 3 2 1 0 8 7 6 5 4 3 2 1 R5 RES1 JP6 NPN C1LED 100n 30 31 JP4 100u 34 33 32 HEADER 6 + C2 R4 RES1 GND ANTENNA GND LED VBAT D3 2 GND GND RES1 + C3 100u D5 DIODE HEADER 2 R1 +Vout 1 VBAT 1 2 3 4 5 6 Vin 39 38 37 36 35 HEADER 8 JP1 FUSE1 U1 EZ1086CM VBAT VBAT GND GND GND RESET +3.3V +5V GND GND VIN 13 12 11 10 9 8 3 TEMP_BAT VCHG ADC0 Reset F1 27 28 29 AREF 8 7 6 5 4 3 2 1 1 2 ADJ JP5 S1 JP3 © Copyright 2012 by e-Gizmo Mechatronix Central All Rights Reserved schematic diagram PCB LAYOUT Figure 6. GSM/GPRS Shield Silk screen layout Figure 7. GSM/GPRS Shield Copper layout (Top) GSM/GPRS Modem (Shield) Hardware Manual Page 9 of 9 Figure 8. GSM/GPRS Shield Copper layout (Bottom) © Copyright 2012 by e-Gizmo Mechatronix Central All Rights Reserved
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