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GSM SIM808 GPRS/GPS Arduino IoT Development Board

GSM SIM808 GPRS/GPS Arduino IoT Development Board

The SIM808 with Leonardo mainboard is an Arduino-compatible development board designed by DFRobot for GSM, GPRS, and GPS applications. It integrates a quad-band SIM808 GSM/GPRS/GPS module with an ATmega32u4 microcontroller on a single UNO-sized, 4-layer PCB. This latest version offers improved stability and is suitable for IoT, remote communication, real-time monitoring, and positioning applications.

Package Includes

  • 1 x DFRobot SIM808 with Leonardo Mainboard

GSM Board
318.95 AED 318.95 AED (Tax included)

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The board is based on the ATmega32u4 microcontroller with an Arduino Leonardo bootloader, allowing direct programming via the Arduino IDE using a micro USB connection. The integrated SIM808 module supports GSM phase 2/2+, GPRS data transmission, and GPS positioning with a horizontal accuracy of less than 2.5 meters CEP and a 5Hz update rate. The SIM808 with Leonardo mainboard supports multiple power input options, including USB power, external DC input through VIN, and a 3.7V Li-ion battery. It includes onboard GSM and GPS antennas, along with a connector for an external GPS antenna. Communication with the SIM808 module is handled using standard AT commands.

Features

  • ATmega32u4 microcontroller with Arduino Leonardo bootloader
  • Integrated SIM808 GSM GPRS GPS module
  • Quad-band GSM support: 850 / 900 / 1800 / 1900 MHz
  • 5Hz GPS update rate with high positioning accuracy
  • Onboard GSM and GPS antennas
  • External GPS antenna connector
  • Integrated Li-ion battery charging circuit
  • Onboard microphone and external microphone jack
  • SIM808 power control and sleep mode support
  • Multiple communication interfaces: UART, I2C, SPI
  • Micro USB port for programming and debugging

Specifications

  • Microcontroller: ATmega32u4
  • Clock Speed: 16 MHz
  • Operating Voltage: 5V
  • Input Voltage: 5V (USB), 7–23V (VIN), 3.5–4.3V (BAT)
  • Digital I/O Pins: 20 (7 PWM)
  • Analog Input Pins: 12
  • Flash Memory: 32 KB (4 KB used by bootloader)
  • SRAM: 2.5 KB
  • EEPROM: 1 KB
  • GPS Accuracy: < 2.5 m CEP
  • GPS Update Rate: 5 Hz
  • Control Method: AT commands (GSM07.07, 07.05, SIMCom enhanced)
  • Dimensions: 73 x 54 mm

SIM808 Module Details

  • GPRS multi-slot class 12/10
  • GPRS mobile station class B
  • Class 4 output power at 850/900 MHz
  • Class 1 output power at 1800/1900 MHz
  • Bluetooth 3.0 + EDR (not enabled in this version)
  • Cold start: 30 s (typical)
  • Warm start: 28 s (typical)
  • Hot start: 1 s (typical)

Applications

  • Vehicle tracking and fleet management
  • Remote monitoring systems
  • Personal tracking devices
  • Security and alarm systems
  • Industrial automation
  • Smart agriculture monitoring