Microduino-Module GPRS

Microduino GPRS/GSM

Microduino GPRS/GSM module plug in the SIM card and use some simple instructions to make Microduino core board connected to the Internet, and then send, receive text messages.

Features

• ESD protection;
• Uses USB powered or lithium battery solution;
• Supports automatic baud rate detection;
• Sends AT command and date via serial;
• Small, cheap, stackable, opened platform;
• Open source hardware circuit design, compatible with the Arduino IDE development environment for programming;
• Define unified interface Microduino specification and contain rich peripheral modules. Set up the quick connection with other Microduino modules and sensors easily and flexibly.
• 2.54 pitch row female connector for easy integration into breadboard.

Specifications

Uses SIM800L module to support four bands GSM/GPRS, working band is: GSM850, EGSM900, DCS1800 and PCS1900MHz.

• Electrical characteristics
  • Working voltage: 3.4V ~4.4V;
  • Under Sleep mode, current consumption is 0.7 mA.

• GPRS data
  • GPRS data transfer up to 85.6 kbps;
  • Build-in TCP/IP protocol;
  • Encoding format: CS-1, CS-2, CS-3 and CS-4;
  • Support Unstructured Supplementary Service Data (USSD).

• Serial debug
  • Supports standard full-function serial, and transmission rate from 1200bps to 115200bps;
  • Supports GSM 07.10 protocol serial multiplexing function.

Document

• Eagle PCB： File:Microduino-GSM.zip
• Microduino-GSM module SIM800L：File:SIM800L.pdf
• SIM card base：File:SIM800L.pdf

Development

You can use GSM library to test, File:GSM.zip Note：This library only supports Microduino-core.

Application

Send the text message using library's example program.

Prepare Work

• Prepared hardware: Microduino FT232R, Microduino Core, Microduino GSM, USB cable or lithium battery;
• Prepared software: GSM library, Arduino IDE (1.0.3 release and upper);
• Uncompress the zip folder to libraries of Arduino IDE;
• Connect the Microduino FT232R and PC using USB cable to download program and serial monitor;
• USB data cable or lithium battery to power Microduino GSM module and press the power button to make Microduino GSM boot, about maintaining 4S, turn on lights to indicate a successful boot.

Debug

• Open the example program SendSMS from examples folder;
• After compiled, select the board "Microduino Core (Atmega328P@16M,5V)", download directly;
  • Opne the serial monitor, set the baud rate, and set to the line and press enter, will print "SMS Messages Sender";
  • Input is completed, press enter, it will prompt you to input the sent content;
  • Input is completed, press enter, you can see the text message sending progress. After completed, displays "COMPLETE!".

Video

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