I am working on a water fountain application that will require me to power around 40 Solenoids (Waterfall printer). Since I have very limited knowledge about electronics calculations, I am wondering :
1.- What will I need to look in a transistor to control de solenoid with the fastest speed possible.
2.- What would the simplest multiplexing implementation be to control all 40 Solenoids with the I/O available on the Photon?
I understand the power supply demands and I think I have that figure out with a big power supply and a good regulator between that supply and the particle, so that I can draw power directly to the solenoids from the big power supply.
Any help appreciated!