PaulS:
Depending on the range, you might, or might not, be able to.
Use the RadioHead library. It does all the work.
There is a lot of that code that is commented out. Delete commented out code before posting, unless it is the commented out code that you have questions about.
You can't write code until you know what you want the code to do. It seems to me that you'd want to start the pump when the level dropped to 25% (that is when percentage <= 25) and stop the pump when the level got to 95% (that is when percentage >= 95). When percentage is between 25 and 95, there is nothing to do. Just enjoy the sound of the pump running (or the look of the pretty light that pretends to be the pump).
PaulS:
Depending on the range, you might, or might not, be able to.
Use the RadioHead library. It does all the work.
There is a lot of that code that is commented out. Delete commented out code before posting, unless it is the commented out code that you have questions about.
so I can use the component for wireless in my project ? I'm only using it to proof control over wireless not on a long distance or something. So its OK then.
And Sorry, I was trying to link commented to the third problem. Just to show if I'm writing it correctly.
When percentage is between 25 and 95, there is nothing to do
So, the code is right ? tested but it's not what I was intended for it to do. the LED doesn't react to the measurement. And when the values between 20 and 95, what is the condition of the pump ? because as I said LED is HIGH from what I've tested it.
Delta_G:
Why would you use Wire for one I2C device and software I2C for the other? Why not just use Wire for both? Do they have the same address or something?
That is the provided code and this what they said about it Using an I2C‑MaxSonar with an Arduino – MaxBotix
So, using a different library is the problem ? I tried to delete Wire but the same thing.
Edit: ah. not using code means not using LCD. Is it common mistake to use two different library to to do the same thing ?