Development of interfacing system for Pic Based Datalogger

Abstract

This paper discussed on the development of data logger system for data transferring using Visual Basic (VB) and MAX 232 connection protocols. The microcontroller of PIC16F877A is used as a main control unit (MCU) for sensors integration which MPLAB is used to write the program and assembly language. The Pic Based Data Logger will be able to log data such as inputs from a mixture of analogue and digital signals up to 4800 bits per second and it has RAM with capacity of 256 byte. The main idea for software interfacing is to store the data to eeprom and the data could be transferred to user computer. Thus desired output in term of graph or other plotting method can be generated for further analysis. Result shows the development techniques for user interfacing system for PIC based datalogger. The main circuit which consists of sensor datalogger for temperature was successfully developed and it can be interfaced with personal computer via serial communication