This shield connects to Arduino with long-wire headers, which keeps the pin layout intact and allows another shield to be stacked on top.

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Jesse Owen
5 years ago
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1 Description SLD SIM900 GPRS/GSM shield for Arduino With the help of this shield and an SIM card, your Arduino could join your local mobile service provider s cell phone network. This shield allows you to communicate with other devices via: SMS, Audio (DTMF), and GPRS service. This shield connects to Arduino with long-wire headers, which keeps the pin layout intact and allows another shield to be stacked on top. Features Selectable HW/SW serial port via onboard jumpers. Quad band global network support. Integreted TCP/IP stack. Onboard earphone and microphone connectors. Onboard LED indicators for Ringing, Status, Network and Power. DTMF enabled SIM900 firmware High-efficient onboard DC-DC convertor. ESD Protected SIM card and Audio interface. SMT machine assembled and high quality PCB Pin Usage The pin usage is basically the same with the official version. D0: HW Serial Port SIM900->Arduino D1: HW Serial Port SIM900<-Arduino D2: SW Serial Port SIM900->Arduino D3: SW Serial Port SIM900<-Arduino D7: Ringing Indicator, active LOW VIN: Drawing power from Arduino. NOTE: By factory default, the serial communication is done via D2, D3, SW serial port and the RI is connected to D7 via a jumper. To use the HW serial port, user should rearrange the two jumpers so they connect the SIM900 TX pin to D0 and SIM900 RX pin to D1, respectively. If you do not want to use the Ringing Indicator feature, just remove the jumper from the header denoted RI.

2 Operation 1. Download the demo code. 2. Extract the.zip and put the folder named GSMShield into..\arduino-1.5.4\libraries. 3. Plug your shield onto your Arduino Board. 4. Plug in DC power supply(7v-12v) in to the barrel connector of your Arduino board.* 5. Download the demo code you want to use. 6. Press S-POWER button on the board and release the button when you see STATUS LED goes on. 7. Press the A-Reset button to reset your Arduino and run the sketch. *Note: The peak current of the SIM900 module may be up to 2A. Please use an external power supply with sufficient current capability. Otherwise, the SIM900 module with locks up or suffers from an unexpected reset. Buttons: S-POWER: Power switch button of SIM900. S-RESET: Reset button of SIM900. A-RESET: Reset button of Arduino. LEDs: RING: Goes ON when there is a incoming call NETWORK: 64ms ON/800ms OFF SIM900 not registered to cell phone network. 64ms ON/3000ms OFF SIM900 registered to cell phone network. 64ms ON/300ms OFF GPRS communication is established. STATUS: ON when SIM900 is powered ON.

Dimensions Figure 1-1. SIM900 GPRS/GSM Shield Dimension Contacts For technical questions, please email us at support@sandboxelectronics.

3 Dimensions Figure 1-1. SIM900 GPRS/GSM Shield Dimension Contacts For technical questions, please us at For prototype services, please us at For anything else, e.g. about the website, store, orders, please us at

4 Description SLD SIM900 GPRS/GSM shield for Arduino With the help of this shield and an SIM card, your Arduino could join your local mobile service provider s cell phone network. This shield allows you to communicate with other devices via: SMS, Audio (DTMF), and GPRS service. This shield connects to Arduino with long-wire headers, which keeps the pin layout intact and allows another shield to be stacked on top. Features Selectable HW/SW serial port via onboard jumpers. Quad band global network support. Integreted TCP/IP stack. Onboard earphone and microphone connectors. Onboard LED indicators for Ringing, Status, Network and Power. DTMF enabled SIM900 firmware High-efficient onboard DC-DC convertor. ESD Protected SIM card and Audio interface. SMT machine assembled and high quality PCB Pin Usage The pin usage is basically the same with the official version. D0: HW Serial Port SIM900->Arduino D1: HW Serial Port SIM900<-Arduino D2: SW Serial Port SIM900->Arduino D3: SW Serial Port SIM900<-Arduino D7: Ringing Indicator, active LOW VIN: Drawing power from Arduino. NOTE: By factory default, the serial communication is done via D2, D3, SW serial port and the RI is connected to D7 via a jumper. To use the HW serial port, user should rearrange the two jumpers so they connect the SIM900 TX pin to D0 and SIM900 RX pin to D1, respectively. If you do not want to use the Ringing Indicator feature, just remove the jumper from the header denoted RI.

5 Operation 1. Download the demo code. 2. Extract the.zip and put the folder named GSMShield into..\arduino-1.5.4\libraries. 3. Plug your shield onto your Arduino Board. 4. Plug in DC power supply(7v-12v) in to the barrel connector of your Arduino board.* 5. Download the demo code you want to use. 6. Press S-POWER button on the board and release the button when you see STATUS LED goes on. 7. Press the A-Reset button to reset your Arduino and run the sketch. *Note: The peak current of the SIM900 module may be up to 2A. Please use an external power supply with sufficient current capability. Otherwise, the SIM900 module with locks up or suffers from an unexpected reset. Buttons: S-POWER: Power switch button of SIM900. S-RESET: Reset button of SIM900. A-RESET: Reset button of Arduino. LEDs: RING: Goes ON when there is a incoming call NETWORK: 64ms ON/800ms OFF SIM900 not registered to cell phone network. 64ms ON/3000ms OFF SIM900 registered to cell phone network. 64ms ON/300ms OFF GPRS communication is established. STATUS: ON when SIM900 is powered ON.

6 Dimensions Figure 1-1. SIM900 GPRS/GSM Shield Dimension Contacts For technical questions, please us at For prototype services, please us at For anything else, e.g. about the website, store, orders, please us at

ARDUINO GSM SHIELD 2 (ANTENNA CONNECTOR) Code: A000106

ARDUINO GSM SHIELD 2 (ANTENNA CONNECTOR) Code: A000106 The Arduino GSM Shield 2 allows your Arduino board to make phone calls, send SMS and connect to the Internet. The Arduino GSM Shield 2 allows an Arduino