So I believe I already have all of the equipment I need for the double solenoid valve project. Here is what I need: Someone who can make me a wiring diagram using the hardware I already have and tell me what I might need, I will give you a list, i will also need the code which will consist of running 2 solenoid valves, one open one closed, a PIR sensor or ultrasonic sensor(havent decided yet), a water flow meter, a screen to display the water flow meter data, and a timed buzzer. I have found diagrams to wire each one on their own but i need it all connected at once and dont want to mess anything up. If you think you can do it just message me your price and we can go from their.
What's temp/humidity got to do with it? All OP mentioned was a PIR.
And in any case, if temp/humidity were in the mix, not knowing the required values cannot in any way hold up the coding process, especially if you code those thresholds as variables and not hard code them somewhere obscure in the sketch.
But how can you possibly offer to write code when you don't know anything about the hardware? (edit: Mind you, OP is asking for a complete build, so presumably you can specify the hardware as you go? Still seems a bit off to me (and typical, to be honest, especially in the hobby world but also alas in the pro world (which is where this thread is) to dive off into coding without fully clarifying the project.)
So, @exovolve, you want one solenoid valve to be normally on and the other off, and when the PIR sensor gets triggered, the first one cuts off and the other on for a full minute?
