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PC and LM35 Temperature Sensor based Wireless Temperature Monitoring and Alarm System with ATmega16 using Series 2 Zig Bee

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In this project, we will learn PC and LM35 Temperature Sensor based Wireless Temperature Monitoring and Alarm System with AVR ATmega16 Microcontroller using Series 2 Zig Bee. Here, we will display and monitor the temperature of the surrounding or any other material to which the LM35 temperature sensor is connected for its temperature measurement in degree centigrade wirelessly from a PC/Laptop using Zig Bee. Also, we will compare the temperature of the surrounding or material to which the LM35 temperature sensor is attached with a threshold value continuously and when the temperature of the surrounding or material to which the LM35 temperature sensor is attached is greater than the threshold value, alert signal is sent to buzzer and to PC wirelessly.

Since the output of LM35 temperature sensor is analog in nature and ATmega16 microcontroller cannot process the analog signal directly. So, first it will convert the analog output of LM35 temperature sensor to digital values using its analog to digital converter and then it will process the digital value to convert the digital value in degree centigrade value. After converting the analog signal to digital, the ATmega16 microcontroller will send the digital value of LM35 Temperature Sensor to the Zig Bee through USART communication protocol. This Zig Bee transmits the digital value of LM35 temperature sensor wirelessly to another Zig Bee connected with the PC/Laptop. At the PC/Laptop end, Zig Bee receives the  digital value of LM35 temperature sensor and transmits that to the PC/Laptop through a USB cable. In the PC, the RealTerm Software receives the digital value of LM35 temperature sensor and displays it for monitoring. Also, the ATmega16 microcontroller will compare the output of LM35 Temperature Sensor value with a threshold value(here the threshold value is 40 `C) continuously and when the LM35 Temperature Sensor output value is greater than the threshold value, at that time the ATmega16 microcontroller will send alert signal to buzzer and to PC wirelessly . After getting the alert signal, buzzer starts beeping and PC displays the alert signal in the RealTerm Software.

Now, lit a match stick or lighter near the LM35 temperature sensor or near the material to which sensor is attached and see the change in temperature in the PC/Laptop and Buzzer.

Softwares Required

Hardwares Required

Name Quantity
AVR Trainer Board-100 with ATmega16 1pc
AVR USB Programmer 1pc
LM35 Temperature Sensor 1pc
XBee Series 2 (Configured Pair) 1pc
Zig Bee Base Board with USB Interface 2pc
12V, 1A DC SMPS Adaptor 1pc
USB AM-BM Cable 1pc
10 to 10 FRC Female to Female Connector 1pc
1 to 1 Connector-Female to Female 10pc

Circuit Diagram

Video

Downloads

PC and LM35 Temperature Sensor based Wireless Temperature Monitoring and Alarm System with ATmega16 using Series 2 Zig Bee Project File
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