How do you use a LEGO Mindstorms NXT to set off fireworks safely?
This video shows you how.
The robot is a MINDSTORMS NXT kit which uses two light sensors, one for detecting the lighting of a firework.
The prototype also uses an ultrasonic sensor to adjust the height of the lighter in comparison
This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/the-robot-that-lights-fireworks