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  • GSM / GPRS SIM900 mini module

    The control interface of each pin description:
    GND - GND
    SIMR SIM900A RXD, TTL level, can not be directly connected to the 232 level
    SIMT SIM900A TXD, TTL level, can not be directly connected to the 232 level
    RST - SIM900A reset, active low
    VCC_MCU when the SIM900A module and 5V TTL level communication, this pin is connected to DC 5V; when the level of communication of SIM900A and 3.3V TTL, this pin is connected to DC 3.3V.
    VCC5----DC 5V input.
    VCC4------DC3.5--4.5 input
    Onboard Resources:
    Serial port circuit(with protection)
    Antenna interface circuit(SMA bend female port)
    SIM card circuit(flip SIM slot)
    4*3.5 fixture hole 4pcs
    SIM900A serial port output terminal
    Size:49mm x 47mm
    Net Weight:28g
    Weight: 38g
    Package Included:
    1 x SIM900A V4.0 kit
    1x Power Cable
    1x Antenna
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  • GSM/GPRS/GPS Shield (B) (For Arduino)
    GSM/GPRS/GPS Shield (B) is an Arduino shield based on the Quad-band GSM/GPRS/GPS module SIM808

    Feature :
    • Arduino connectivity, compatible with UNO, Leonardo, NUCLEO, XNUCLEO
    • Onboard USB TO UART converter CP2102 for UART debugging
    • 5 x LEDs for indicating the module working status
    • Onboard voltage level converter, supports both 3.3V and 5V systems
    • SIM card slot for 1.8V/3V SIM card
    • Baudrate auto detection (1200bps ~115200bps)
    • Bluetooth 3.0, supports data transferring through Bluetooth
    • RTC with power supply interface
    • Firmware upgradable via USB
    • Control via AT commands (3GPP TS 27.007,27.005, and SIMCOM enhanced AT Commands)
    • Supports SIM application toolkit: GSM 11.14 Release 99
    • Operating voltage: 6 ~ 12V
    • Operation temperature: -40 °C ~ +85 °C
    • Storage temperature: -45 °C ~ +90 °C


    • Band
      • GSM 850/EGSM 900/DCS 1800/PCS 1900 MHz
      • Quad-band auto search
      • Compliant to GSM phase 2/2+
    • Emitting power
      • Class 4 (2W @ GSM 850/EGSM 900 MHz)
      • Class 1 (1W @ DCS 1800/PCS 1900 MHz)
    • GPRS connectivity
      • GPRS multi-slot class 12 (default)
      • GPRS multi-slot class 1~12 (configurable)
    • GPRS data feature
      • Downlink speed: max 85.6kbps
      • Uplink speed: max 85.6kbps
      • Coding schemes: CS-1\CS-2\CS-3\CS-4
      • Supports PAP (Password Authentication Protocol) for PPP connection
      • Embedded TCP/IP protocol
      • Supports PBCCH
      • Supports CSD transmission speed: 2.4/4.8/9.6/14.4 kbps
      • Supports USSD
    • SMS
      • Supports: MT/MO/CB/Text/PDU mode
      • SMS storage: SIM card
    • Audio
      • Voice encode/decode mode: Half Rate\Full Rate\Enhanced Full Rate\Adaptive muti rate
      • Supports echo cancellation
      • Supports noise reduction


    • Receiver type
      • 22 tracking channels
      • 66 acquisition channels
      • GPS L1 C/A code
    • Sensitivity
      • Tracking: -165 dBm
      • Cold starts : -148 dBm
    • Time-To-First-Fix
      • Cold starts : 30s (typ.)
      • Hot starts : < 1s
      • Warm starts: 28s
    • Accuracy
      • Horizontal position : <2.5m CEP
    Sources : here

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  • Arduino Ethernet Shield (W5100)
    Product Details:
    Ethernet Shield W5100
    Size: approx. 6.6cm x 5cm x 1.5cm

    With this Ethernet Shield, your Arduino board can be used to connect to internet
    Can be used as server or client
    Directly plug puzzle board, no soldering required
    This is the latest version of the Ethernet Shield
    This Arduino Ethernet Shield which is based on the Wiznet W5100 Ethernet Chip gives you an easy way to get your Arduino Online

    It is directly supported by Arduino official Ethernet Library
    and micro-SD card slot, which can be used to store files for serving over the network

    Compatible with the Arduino Duemilanove (168 or 328), Uno as well as Mega (1280/2560) and can be accessed using the SD library

    The Wiznet W5100 provides a network (IP) stack capable of both TCP and UDP
    It supports up to four simultaneous socket connections
    Use the Ethernet library to write sketches which connect to the internet using the shield
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  • Arduino Base Shield V2
    For Arduino
    • 5V/3.3V compatible.
    • 4 analog ports.
    • 8 digital ports.
    • 4 I2C ports.
    • 1 UART port.
    • Stackable for greater expandability.
    As an expansion board, Base Shield v2 has many Grove connectors, making it convenient for you to use Grove products together. And It is compatible with a series of Arduino products.

    Power Compatible: Every Grove connector has four wires, one of which is Vcc. However, not every micro-controller main board needs a supply voltage of 5V, some need 3.3V. That's why we add a power switch to Base Shield v2. In this way, you can adjust the voltage of Vcc via this switch, making sure the voltage of Vcc is the same as supply power of the main board.

    So While using Arduino UNO with Base Shield v2, please turn the switch to 5v position; While using Seeeduino Arch with Base Shield v2, please turn the switch to 3.3v. 
    Board Compatible: The number of pinout is the same as that of Arduino UNO R3.
    Added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible with both the board that uses the AVR, which operates with 5V and with the Arduino Due that operates with 3.3V. The second one is a not connected pin, that is reserved for future purposes. ---- According to Arduino UNO.
    Sources :  Seeedstuidio Base Shield V2
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  • 1Sheeld+
    1Sheeld+ for using iPhone and Android with Arduino

    The 1Sheeld+ is an easily configured shield for Arduino. It has a built-in bluetooth low energy module that gives to your Arduino the capability to

    connect itself to your iOS and Android phones. Thanks to the 1Sheeld app available on the App Store and Google Play Store you can easily associate your Android smartphone to it and turning your smartphone in a shield itself.

    Once connected you can control your Arduino with the smartphone sending data and controlling pins but you can also do the opposite. The 1Sheeld library gives to your Arduino the full control of the smartphone. So the Arduino can send e-mails, control the Camera, use Voice Recognition, send Facebook and Twitter notification and basically everything a powerful smartphone can do.

    It is compatible with 5V and 3.3V boards.

    Getting Started Video:

    What can you do with 1Sheeld?

    Sky is the limit! You have a powerful smartphone that can be used to control your RC car, tweet when plants are thirsty, and have fun playing with your friends.

    We have already developed a variety of shields for 1Sheeld like LED, Toggle Button, Buzzer, Slider, LCD, 7-Segment, Keypad, Music Player, Game Pad, Notifications, Twitter, Facebook, Foursquare, Gyroscope, SMS, Flashlight and Mic. And we have many other shields coming in the pipeline.

    Example of 1Sheeld shields: 

    GLCD Shield - Allows you to use your smartphone display screen as a graphical LCD screen for Arduino., so you can draw characters or interactive shapes with Arduino code.

    Color Detector Shield - Allows you to detect colors with your smartphone camera, and trigger the Arduino to take actions based on the colors detected.

    Internet Shield - Brings the power of IoT with the simplicity of 1Sheeld and Arduino to your door, so now you can handle Http requests, access certain REST api’s “even with JSON format” and get their responses then take a certain action using the Hardware experience.

    Pattern Shield - Turns your smartphone to a secret pattern locker shield so Arduino can take actions by a certain patterns defined by user.

    Voice Recognition Shield - Control your Arduino with voice commands with 1 line of code, you can trigger it to control a robot or talk to your home appliances!

    Text To Speech Shield - Let your Arduino board talk to you, get text from Arduino and convert into speech to hear through the smart phone's speaker.

    Data Logger Shield - Use the memory of your smart phone to log the data of a certain sensor with Arduino, you can export the data in CSV format.

    Terminal Shield - Turn your smart phone into a terminal and get the data from Arduino to your screen! Learn more from the examples page.

    Twitter Shield - Bringing twitter into your Arduino sketch. Twitter shield allows you to send tweets with only 1 line of code in your sketch.

    Facebook Shield - Helps you update your status on Facebook under certain conditions declared in your sketch.

    Email Shield - Send emails when any hardware event happens.

    Skype Shield - Skype is now in your sketch, feel free to call or video-call others when a certain condition is met.

    SMS Shield - Allows you to send an SMS to a phone number when a certain trigger is on.

    Camera Shield - Allows you to take pictures when a certain event happens, use your Arduino board to trigger the camera in your smartphone, you can take photos in the dark as well with the flash light.

    Gyroscope Shield - Tinker with the Gyroscope sensor in your smartphone and turn on some LEDs while playing with the by getting the values on the 3-Axis (X, Y & Z), you can use it also to drive an Arduino controlled car.

    Accelerometer Shield - Get the acceleration of a moving objects is easier now by writing a simple line in your sketch, the shield gets you the data of X, Y and Z axis of the accelerometer sensor in your smartphone.

    And many more shields at

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