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PIC16F877A Microcontroller Based Programmable Temperature Al

2015-03-02 04:03  
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PIC16F877A Microcontroller Based Programmable Temperature Alarm

PIC16F877A Microcontroller Based Programmable Temperature Alarm . This project is based on LM35 temperature sensor. In this project user can watch current temperature reading on 16x2 LCD module, user is allowed to set temperature threshold value using three on board switch named UP, ENT, DWN. When current temperature reaches the user defined temperature threshold value alarm get activated.

PIC16F877A is enhanced flash microcontrollers, PIC16F877A devices is available in 40-pin and 44-pin packages. The 28-pin devices have three I/O ports, while the 40/44-pin devices have five. The 28-pin devices have fourteen interrupts, while the 40/44-pin devices have fifteen. The 28-pin devices have five A/D input channels, while the 40/44-pin devices have eight. The Parallel Slave Port is implemented only on the 40/44-pin devices .