Thank you very much for keep developing the drop controller! I build gear for my wifes drop photography (www.anita-k-foto.dk/), and was about to make some modifications to her controller, when I noticed V3. Perfect timing 🙂 We have a few suggestions:
1. In the software, add a enable/disable checkbox for each triggerable item, (camera, flash, solenoids) This would make test/timing shots much easier, this could perhaps replace the “number of valves” function.
2. When/If you make the change to the Mega 2560 or find some extra ports some other way, add more flash,camera and solenoid outputs perhaps a servo or two;-)