WEEK 8 FYP SEMESTER 2


Objective

To testing and to make two sensors run simultaneously.


Activity

Below show the successful PIR module circuit using one module sensor only :

To solve the problem if using two sensor to detect is by create another 555 timer circuit for second PIR module sensor. To compile both motion sensor into one output is using 7408 Logic AND Gate. This gate is suitable gate to my project cause of the output may indicate if both sensor detect same motion so the buzzer will produce buzzing sound that show the motion is detected. If only one motion detect from both sensor, nothing happen from the indicator.Below shown the 7408 Logic AND Gate :