1. iv
ABSTRACT
The study is entitled “Runway lights Checker”. As stated in the title, this study is focused
on creating a runway lights checker using a programmable microcontroller (PIC16F877A) and a
LED to indicate if the light is good or bad.
Each light has its corresponding number. Two 7-segment displays are also used to display
the number of the light being checked. Each light has its own comparator. After the comparator
checked the current and voltage, the output is then sent to a multiplexer to choose what reading
needs to be displayed by the LED indicator.
This system has two modes of checking: 1) Checks specific light number. 2) Checks all the
lights by a single switch. For the prototype, the researcher used 16 LED’s for the lights.
Proteus Software has been really helpful in simulating the whole system and EAGLE
Software for the layout.
Based on the trials that were performed, the result of the system were accurate. The
comparator and multiplexers operates well and gave an appropriate output. Therefore, this
system “RUNWAY LIGHTS CHECKER” can be considered as an alternative means of checking of
runway lights as it requires less manpower (1).
Furthermore, the researcher recommends to have a data storage and wireless checking
for this system in the future.