The Field module which connects to your fireworks basically has a standalone Arduino Uno that controls a multiplexed arrangement of solid-state relays which provide the battery current to the electric igniters which in turn shoot off the fireworks. The remote controller and field module talk to each other over a pair of RFM69HCW 915MHz radio modules.
Please let me know what you think and any comments or suggestions, I’m always improving upon this system year after year.
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