You know when it comes to New Years and Independence Day, you always get to see some really exotic, beautiful fireworks. Well, all those fireworks are nowdays controlled by an ignition control system but here’s how to make one for yourself.
At the heart of my firework ignition system is an SX48 running at 50 MHz. I was able to make full use of the SX’s 36 IO pins. Thirty lines are dedicated to the 30 channels. Two lines connect to a MAX233 chip for serial port control. Another line is connected to a 7805 (TO-92) which monitors the state o