PIC16F877A LM35 Temperature Monitor

Hello Everyone, After giving you some Arduino based projects, This time it is a PIC16F877A Based project.

This is a simple temperature monitor based famous analogue LM35 Temperature monitor. This circuit used the AD converter of the microchip and use three seven segments displays to show the temperature.

Here the schematic :

Unfortunately the source code is in Assembly format and it is an image I have to publish here. You can use MPLAB IDE to write this code and build it.

Here is the Source Code :

 

This project I extracted from "Vidusara" Science magazine which published in Sri Lanka. It is the most famous science magazine in Sri Lanka.

This project was designed by Mr. Gamini Jayasinghe and Mr. Kolitha Dharmapriya (University of Moratuwa)

PIC16F877A Prototyping Board

I built my second prototyping board and this time it is for the big guy PIC16F877A. I used a ZIF socket to easily remove and re connect the microcontroller.

Same as the previous board I built this on a vero board. I added a 7805 regulator and 4 MHz crystal oscillator. And also female headers for all the required ports and some additional headers for power output. 

Here is the schematic of the circuit.

You can also try this. Comments are always welcome!!