LIGHT PYROTECHNIC DEVICES REMOTELY.
Many professional firework displays are fired electrically these days using devices called electric matches that create a small localised explosion as soon as current is passed through them by the control system. This project is a much cheaper (about 99% cheaper!) way of lighting fireworks and smoke cookies with nothing more than a cheap 10 ohm, quarter watt resistor from your local electronics store.
A ten ohm quarter watt resistor with 12V applied across it passes 1.2 Amps and dissipates 14.4 Watts. Since this is almost sixty times its power rating, it starts smouldering almost immediately...
Then bursts into flames.
See a resistor burning up in this video.
So if you get a smoke cookie, a resistor and a bit of tape...
And you tape the 10 ohm resistor across the smoke cookie...
And apply 12 Volts...
It ignites the smoke cookie, as in this video.
And if you get a firework with a standard fuse...
And tape a 10 ohm resistor to the fuse...
You can light the firework remotely. Yes it did catch me by surprise!