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AVR GSM Cellular Development Board

Replacement: None. We are no longer carrying this board but check out our other evaluation boards in the cellular category. This page is for reference only.

AVR-GSM is excellent board for adding remote monitoring and control in remote places by GSM cellular network. Do you want to switch on/off your local heating in your mountain house? To monitor the temperature at up to 8 remote points up to 30 meters away from the module? To listen to what happens in your house with silent call after you get message for alarm status? Then AVR-GSM is the board for you! It contains ATmega32 microcontroller and 3-band GSM GPRS module 900/1800/1900Mhz inside which covers most used GSM networks around the world. The GSM antenna is built into the board so there is no need for an antenna. AVR-GSM has two relays 240VAC/10A, two optoisolated inputs which could be connected to alarm sensors or just buttons for user actions (like call pre-loaded phone numbers), on-board temperature sensor and connector for additional up to 8 addressable remote temperature sensors at up to 30 meter distance from the module. Normal phone hook can be connected to this board and to allow user to speak, listen, take and place phone calls as normal stand alone cellular phone. AVR-GSM can be connected to PC with the USB connector and it is recognized as modem which could be used to add internet via GPRS to your computer.


  • MCU: ATMega32 32KB Flash memory , 2KB RAM, 1KB EEPROM
  • JTAG connector for programming and debugging with AVR-JTAG-L or AVR-JTAG-USB
  • GSM GPRS 3-BAND MODULE 900/1800/1900Mhz with on-board GSM cellular antenna
  • Li-ion backup battery for up to 200 hours of GSM module stand-by (no peripherals active)
  • SIM card holder
  • Two RELAYS 240VAC/10A
  • Two optoisolated inputs
  • USB interface
  • Phone hook connector
  • Buzzer (ringer)
  • Status LED
  • On-board temperature digital sesor
  • Connector for remote temperature sensors up to 30meters far away from AVR-GSM
  • Extension 26 pin connector for all unused ATMega32 ports
  • PCB: FR-4, 1.5 mm (0.062"), soldermask, silkscreen component print
  • 130x82x34 mm (5.1x3.2x1.3")


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