I put this together a few years ago and it's been used ever since at my club, the local school, and another club outside Detroit. Standard tackle-box design, but the software and pcb have decades of experience behind them. It was based on Arduino, but the software outgrew those processors so I built my own PCB and upgraded everything.
Large display, internal buzzer (for R/C countdown), automatic horns with internal compressor, support for ALL sequences (need one not listed? I'll add it). I won't call it waterproof, but I've used it in strong storms without issue. Can hook u