Introduction
SIM808 shield is a GSM and GPS plus Bluetooth three-in-one function shield for Peakduino/Arduino. It is based on the latest GSM/GPS/Bluetooth(optional) module SIM808 from SIMCOM, supports GSM/GPRS Quad-Band network and combines GPS technology for satellite navigation.It has high GPS receive sensitivity with 22 tracking and 66 acquisition receiver channels. Besides, it also supports A-GPS that available for indoor localization and bluetooth 3.0.
The GPRS/GSM Shield is configured and controlled via its UART using simple AT commands. Based on the SIM900 module from SIMCOM, it is like a cell phone. Besides the communications features, the GPRS/GSM Shield has 6 GPIOs, 2 PWMs and an ADC.The module is controlled by AT command via UART and supports 3.3V and 5V logical level.
FeatureQuad-band 850/900/1800/1900MHzGPRS multi-slot class12 connectivity: max. 85.6kbps(down-load/up-load)GPRS mobile station class BControlled by AT Command (3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands)Supports Real Time ClockSupply voltage range 5V ~ 12VIntegrated GPS/CNSS and supports A-GPSIntegrated Bluetooth 3.0Onboard 3.0V to 5.0V logic level converterLow power consumption, 1mA in sleep modeSupports GPS NMEA protocolStandard Micro SIM Card ApplicationsM2M (Machine 2 Machine) Applicatoions - To transfer control data using SMS or GPRS between two machines located at two different factories.Remote control of appliances - Send SMS while you are at your office to turn on or off your washing machine at home.Remote Weather station or a Wireless Sensor Network - Make it with Peakduino and create a sensor node capable of transferring sensor data (like from a weather station - temperature, humidity etc.) to a web server (like pachube.com).Vehicle Tracking System - Install GPRS+GSM+GPS Shield in your car and publish your location live on the internet. Can be used as a automotive burglar alarm. CautionsMake sure your SIM card is unlocked.The product is provided as is without an insulating enclosure. Please observe ESD precautions specially in dry (low humidity) weather.The factory default setting for the GPRS Shield UART is 19200 bps 8-N-1. (Can be changed using AT commands). Here’s a quick overview of each pin mapping:
Pin Label In/OutBoard ConnectionPin Description GNDInGroundSIM808 module ground (0V reference) SIM_RSTInArduino D9Reset the SIM808 module SIM_DTRInArduino D8Data terminal ready SIM_PWRInArduino D7Enable or Disable the SIM module RXInArduino D0-D4Serial data input TXOutArduino D0-D4Serial data output SIM_RIOutArduino D6Ring indicator – Output Low when incoming calls VRTCInThe button batteryBackup power – keeps the RTC running (2.7-3.3V input range) VBATInOn-board 3.3V regulator3.3V power supply input
