The objective of this project is to remotely control the opening/closing of actuated solenoid valves through an Android phone. I have attached circuit diagrams - breadboard and schematic versions. I have little to no electrical engineering background at all so excuse me for any glaring flaws or epic fails.
It would be greatly appreciated if any of you can point out any possible flaws in my system. Some concerns and questions I have:
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Solenoid valves must be rated to ~100 psi. What is better: high AC voltage valve (120V AC) or low DC voltage valve (12V DC) for this system? The relay module should be able to accommodate either option.
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I have a separate 5V power supply for the relay module (as suggested by some research I did). But not entirely sure why it's 5V. I am also unsure of the circuity.
Thanks,
