Hello everyone, I am attempting to build my first project that will start and stop a diesel engine and wish to use some form of a app on my phone to do so. I would like the app to be a simple button that when pressed it makes a digital pin 6 HIGH and says “Pump ON” and then when pressed again it says “pump OFF” and makes digital pin 6 LOW and pin 7 HIGH.
I can change the pin states with HTML but that is not convenient as I would like to be able to run the app on at least two phones.
Could someone point me in the right direction please as I have never programmed before I am struggling with the best way to do this.
Thank you in advance.