Arduino is an open-source physical computing platform designed to make experimenting with electronics more fun and intuitive. Arduino has its own unique, simplified programming language, a vast support network, and thousands of potential uses, making it the perfect platform for both beginner and advanced DIY enthusiasts.
Circiut board 1
Circuit board#1 modified
Circuit board 2
Ciurcuit board #2 modified
circuit board #3
Circuit #3 board modifeid
I just change the DISPLAY_TIME for 10 to 1000 for that the duration of the light increases.