AVR-GSM Olimex Ltd., AVR-GSM Datasheet

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... AVR-GSM development board All boards produced by Olimex are ROHS compliant Copyright(c) 2009, OLIMEX Ltd, All rights reserved Rev.B, January 2009 Page 1 Users Manual ...

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... To listen 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 build in the board so no need for external expensive GSM antennas ...

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... The demo software show basic functionality and how to place / take phone calls (C source and HEX) or how to remote control via SMS (C source and HEX) The sources are compiled with WinAVR free C compiler. you power supply the board for few hours. 131 Powerful Instructions – Most Single-clock Cycle Execution ...

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BLOCK DIAGRAM: Page 5 ...

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MEMORY MAP: Page 6 ...

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SCHEMATIC LI_BAT VSIM,SIMDATA,SIMCLK,SIMRST GND + + + 2.2uF/0805 + + 2 1 DOWNLOAD 220uF/10V/tant C57 + + + 10uF/10V/1206 C58 TEST 21 GND3 ...

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... BOARD LAYOUT: POWER SUPPLY CIRCUIT: The power supply of AVR-GSM could be done in two different ways: 1. Power from +12VDC without using the internal backup battery. The module is powered only from external 12V and the battery is not connected. In this case: − jumper BAT_E must be open − ...

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... If the 12V power supply is missing the battery discharge current is between 5 and 25 mA without call, and about 200mA during active call. RESET CIRCUIT: AVR-GSM reset circuit is made with STM1001R with typical threshold +2.63V. CLOCK CIRCUIT: Quartz crystal 7.37MHz is connected to ATMega32. ...

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... ATMega32 and GSM module. SIM-CARD: Pin # Signal Name 1 VSIM 2 SIMRST 3 SIMCLK 4 GND SIMDATA This is standard SIM card connector, to operate AVR-GSM should have inserted valid SIM card for your operator network. Note that the SIM card should be without PIN security. http://www.ftdichip.com/Drivers/CDM/CDM20602.zip . Page 11 whether the ...

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... PWR-CON : Pin # Signal Name 1 +12V 2 GND This connector is used to power the AVR-GSM. External (12VDC) power source have to be applied to this pins. OUTPUT RELAYS CONNECTOR: Pin # Signal Name 1 NO-REL1 2 COMMON-REL1 3 NC-REL1 4 NO-REL2 5 COMMON-REL2 6 NC-REL2 NO – relay normally opened contact, NC – relay normally closed contact COMMON – ...

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... I2C signals (SCL, SDA) are used for external temperature sensor connection or other suitable I2C device interfacing. There is possibility external temperature sensors on this bus. Olimex sell these modules separately under the order code MOD-TMP and communication with meters between the AVR-GSM and MOD-TEM is possible error free. HANDSFREE: Pin # ...

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SPEAKER CONNECTOR - SPEAKER: Pin # Signal Name 1 EAR– 2 EAR+ This is connector for external 32 ohm speaker EXT : Pin # 1 BACKUP 3 GND VBAT 9 +5V 11 POWERKEY-pin12 of GSM module 13 ...

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... VBAT: Dedicated to connect main Li-ion battery. The power supply of GSM module has single voltage source of VBAT= 3.4V...4.5V. Li-ion battery with 650mA capacity is used in AVR-GSM. ADC3/PA3: ADC3 input/digital IO of ATMega32. +5V: +5VDC output / current source POWERKEY: This is GSM module power on/off key. When the module you press and hold for more than 3 seconds the module go in power down state ...

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JUMPER DESCRIPTION: BAT_E 4V_E 4V 5V_CHG_E DCDC_E 3V_E Download Connects 3.7V Li-ion battery to the GSM module. Default state open to not drain the battery during stocking the modules. Default state - open When this jumper is ...

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MTX/DTX The GSM module have two UART channels. One for the commands, one for debugging. With this jumper you control which chnnel goes to ATMega32 and FT232RL. Default state MTX MRX/DRX The GSM module have two UART channels. One for ...

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INPUT/OUTPUT: Button B1: user button connected to ATmega32 pin.12 PD3 (INT1); PWRKEY button – This is GSM module power on/off key. When the module you press and hold for more than 3 seconds the module go in ...

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MECHANICAL DIMENSIONS: All measures are in mm. Page 19 ...

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... AVAILABLE DEMO SOFTWARE: – Placing/taking phone calls with AVR-GSM – Remote control via SMS on AVR-GSM description (C source (C source) firmware Page 20 ) ...

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ORDER CODE: How to order? You can order to us directly or by any of our distributors. Check our web All boards produced by Olimex are ROHS compliant Revision history: REV.B www.olimex.com/dev for more info. - create January 2009 Page ...

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... OLIMEX in good faith. However all warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded. This document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable for any loss or damage arising from the use of any information in this document or any error or omission in such information or any incorrect use of the product ...