Digital Thermometer with RS232 Interface

The project aims to produce a hypersensitive digital thermometer that can be used to view the temperature measurements on a computer program by monitoring the state of COM ports of a PC through RS232 interface.

The temperature sensor LM35DZ is used to build the digital thermometer along with MAX232 IC and PIC16F877 microcontroller. The Serial Watcher program is used to view the sample measurement data received through COM2. The development board used is the 8051 family which is used in a variety of applications such as mechatronics, robotics, automobile industry, warfare industry, and home appliances. For electro-mechanical applications, their importance in control applications is increasing remarkably. On different ports of the microcontroller, this simple board is being built for educational purposes to emulate different 8051 programs. The simple LED blinking processes, hydraulic, pneumatic applications, motor control applications for robotics, and others are included in these applications.

To communicate with the PC through the serial port, the code is written in Assembly Language and is burned onto the 8K Flash ROM of an AT89S52 microcontroller. The a program can be downloaded on the RAM memory and make the code to run through the microcontroller.

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