Someone I know in that industry described the San Diego event as being the result of playback scrubbing; by either dragging or accidentally clicking somewhere on the timeline. Obviously heard second hand, but its a close community so I generally trust it - Wikipedia says it was a corrupted file

Actually, in this first phase, I haven't thought of connecting the software to a control unit that triggers actual fireworks. For now, it's only supposed to be a design show software. But, I guess, that is going to be the next crucial step if pyrotechnics want to use this software

To mitigate this problem, shouldn't tecnicians have a sort of simulated environment where they test their shows, without triggering actual fireworks?

Thank you! Here in my place, we organize a lot of firework shows for celebrations. Hence my brother-in-law - which is a passionate but not a prefessional - told me, why don't you make a software like that? So I took the challenge!

Would you like to contribute? I am actually looking for someone who wants to help me integrate maps from OpenStreetMap into FireShow.

Why do you want to port it to the web? It'a a genuine question. Is it for making the software more accessible?

Neck-down hah

Basically setup and load the tubes with shells; lots of attention is given to safety buffers, and things like orienting the racks so they can't fall facing the audience.

Some states require electronic firing, so everything gets a squib tied into the fuse, other places you can hand-fire with a road flare, which is more reliable, but dangerous. Anything that doesn't launch needs to be re-squibbed or extracted.

Its also wicked exciting, and fireworks from directly below look entirely different. My first show hand firing 6" shells, I distinctly recall knee jerk yelling "what the fuck" over and over, grinning ear to ear; you can really feel the pressure wave from the launch. It also paid $10/hr

There is also an amateur fireworks association as a fyi; people still hand build shells :)

Edit: as for timing, they'd have patterns like, x3 3-inch shells, x2 6-inch, and 1 8-inch; color and pattern were intentional choices. For hand fire, they'd yell out the shell size to fire, one person per size