Since my last log, the sequencer has been used for New Year's 2018 and Independence day 2018 festivities. It worked as planned and everyone enjoyed the shows. My friend who i created it for is also quite pleased with it and now he enjoys designing his pyrotechnic displays.
A possible future version that has been discussed is the ability to coordinate the display with a music track. I've also been pondering control from a PC/tablet/smart phone.