I am very new to Arduino but very old to programming. I am very much a software guy and it is the hardware, electronics, aspect of each project that is going to require me seeking out handholding wherever possible...
I may be leaping high... but as part of my first project I want to be able to test if my garage door is currently open or closed. Later I'll go for the ability to open and close it. But for now just the verification part will do.
I have Arduino Unos and I have an Arduino Ethernet PoE and I have an Arduino WiFi shield. The long-term goal will be to use the Ethernet PoE version as I already have Ethernet cabling in the garage and PoE switches.
My question is therefore as regards the physical aspect: what would you recommend as the physical system to verify if the garage door is currently open or closed? What sort of sensor would I attach?
It's a rollup garage door which is already motorised with a big manual push button inside, a couple of radio-based remote controls and a horizontal reader near the floor which tests if there is an object inside the doorway (ie a car) and which deactivates the opening/closing.
I would like to be able to test both situations: open and closed. I assume that's going to require 2 separate sensors: one towards the bottom to detect closed and one up top to detect open. What should I be sensing however? A physical connection? Light coming in or going out (would not work well at night)? Infrared passage?
I assume I will then need to run a wire from each sensor to my Arduino box which I will be, eventually, setting up just next to the manual push button...
Any ideas and suggestions or any scenarios that some of you have already done would be greatly appreciated.
If I'm just biting off way too much before even learning how to chew you can let me know that as well.