I have a septic system that has several warning lights. If the septic should fail one or more will turn on and I must notify the engineer. I would like to design a simple monitor to extend that system.
Since the septic is located a good distance from the house here is what I would like to do: create a small light-sensor that communicates via low-power Bluetooth whether the light is on or off. This monitor would be battery-driven. This device would communicate to an iphone app the status of the light (on or off).
I am able to cover the septic’s light such that sunlight would not be a problem.
The septic light monitor would be small and I could place it next to each warning light. The smartphone app would - on demand - tell me if the light was off or on, or if the battery was getting low.
I am an electronic newbie so the simpler the better, and the only requirement is that a single monitor should be battery-powered, small (perhaps the size of a quarter) and Bluetooth low-energy capable.
Any suggestions appreciated.