Hi no problem with electronics.. I etched the simulator in the way that to add IRF540 8) ... As the simulator works perfect and i have a good experience with electronics in the past..so i envisaged no problem in near future..
The solenoid valves i purchased from JunkYard and are of 220mA 24V DC... Driving them with a 4-Amp 24VDC supply will be enough:)...
Now i can test and design the nozzles for the solenoid to get a good shape droplets..this is again no problem because i am a mechanical engineer;)
The youtube video of the simulator in working condition is uploading..soon will share the link with you guys 