I am trying to create a circuit that would monitor my garage door status and simply turn an LED on or off depending on the status. The problem is that I want that LED to be in our bedroom so I know before I go to bed whether or not my garage door is open. So the questions is, what would be the easiest way to set up that wireless communication to display the LED status in my bedroom. I have 2 arduinos if needed. I would like this to be as cheap as possible. I saw something about the Xbee wireless module but that and the usb adapter are very expensive considering I would need 2 of each. So what other forms of comms could I look into? Thanks!
Travsmojo:
I would like this to be as cheap as possible.
Provided that the stations are within range, it can't get much cheaper than using two bluetooth modules that are configured to power-on autoconnect. About $6, no Arduinos needed, no extra LEDs either.
Nick_Pyner:
Provided that the stations are within range, it can't get much cheaper than using two bluetooth modules that are configured to power-on autoconnect. About $6, no Arduinos needed, no extra LEDs either.
I could run a wire along the ceiling of my garage and make the range less than 15 feet. Do you have a part number and example program that I could reference? Thanks!
Thanks for the info! I will look into that! What about an RF24 module? Would that work a little better as far as range and programming?
The standard NRF modules are about the same price and performance as plain vanilla bluetooth, but you need two, and both of them connected to Arduino. You can get a hi-power NRF24 module, which can work over a kilometer. You only need one.
With bluetooth, you don't need arduino and you may get by with one bluetooth talking to your phone. The advantage of two blueteeth, is that it tells you what is going on rather than you having to ask it. You may get better range using BLE devices.