Difference between revisions of "Microduino-GPRS/GSM"

Microduino-USBHOST

Microduino-GPRS/GSM module can get Microduino core board connected to the internet and achieve the function of sending and receiving messages when it is just inserted with a SIM card and follows some simple instructions.

Features

• ESD protection;
• Capable of being charged by USB, li-ion or other power supply options;
• Support automatic baud rate detection function;
• Capable of sending AT instructions and data through the serial port;
• Small, cheap, stackable and open;
• Open hardware circuit design and Arduino compatible programming development environment;
• Uniformed Microduino interface standard and rich peripheral modules, capable of having a fast and flexible connection and extension with other modules and sensors in accord with Microduino interface standard;
• Easy to be integrated to pegboards with a 2.45-pitch female header connector interface.

Specifications

Adopt SIM800L module to support four-band GSM/GPRS, whose working band is：GSM850, EGSM900, DCS1800 and PCS1900MHz.

• Electrical characteristics
  • Working voltage：3.4V ~4.4V；
  • The current consumption is 0.7 mA under the Sleep Mode

• GPRS data
  • The maximum data transmission rate of GPRS is 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 debugging
  • Support standard full-function serial as well as the transmission rate with a range from 1200bps to 115200bps;
  • Support serial port multiplexing function corresponding to GSM 07.10 protocol；

• Two Main Compoments:
  • SIM800L module

Microduino-SIM800L-Pinout

Microduino-SIM800L-Pinout

• • SIM card power and base plant

Microduino-SIM-Pinout

Microduino-SIM-Pinout

Document

• Eagle PCB： File:Microduino-GSM.zip
• Microduino-GSM mudule SIM800L：File:SIM800L.pdf
• SIM car power supply and the card base：File:SIM800L.pdf

Development

You can use GSM library to test, https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Libraries/_03_Microduino_GSM_SIM800L

Note：This library only supports Microduino-core.

Application

Sending short messages through the example program in the library.

Preparation

• Hardware：Microduino FT232R, Microduino Core, Microduino GSM, USB cable or lithium battery；
• Software: GSM library, Arduino IDE (version 1.0.3 and higher)；
• Uncompress the zip folder to libraries of Arduino IDE；
• Connect the Microduino FT232R and PC using USB cable to download program and monitor the serial port；
• USB cable or li-ion battery to charge the Microduino GSM module and press the power button for a long time to activate Microduino GSM for about 4 seconds. That the power-on indicator goes on shows a successful start.

Debugging

• Open SendSMS test program in the examples；
• After it gets compiled successfully, just select the board "Microduino Core (Atmega328P@16M,5V)" and download directly；
  • Open the serial monitor(The serial monitor is set to the format of "Newline" and "Enter" ), set the baud rate, and the "SMS Messages Sender" will be printed;
  • You need to wait for Microduino GSM module reading SIM card about 10 seconds. If that goes well, "GSM initialized" will be displayed and a note will pop up to remind you to input one number.
  • After the input, just press the Enter, it will remind you to write your message.
  • Just send the message and after that,"COMPLETE" will be displayed on the screen if the message gets sent out.

Purchase

History

Picture

Microduino-GPRS/GSM Front

Microduino-GPRS/GSM Front

Microduino-GPRS/GSM Front

Microduino-GPRS/GSM Front

Video