Hi,
I'd like to use my arduino to track the state of my garage door (opened or closed). I'm wondering what type of sensor(s) I should use. I'd like to be able to query the device to determine the door state.
At one point I thought I read about someone using magnates (one one the device and one on the door rail) but I can't find it again.
Suggestions would be much appreciated!
-LK
Magnet and reed switch would work. OR magnet and hall effect transistor. OR plain old fashioned microswitch. optical slot detector and a tiny flag.
SOOOO many ways.
laser shining at a shiny spot on the door reflecting back to an optodiode.
Thank you for your response! I figured there were many ways to do this but I'm totally new to the Arduino stuff and didn't know if there was a canonical way to solve this problem. If you were going to do this what method would you use?
Thanks again!
Just don't use any of these ideas to trigger a booby trap for burglars. You'll get into trouble.
I would use a magnet and a reed switch. They are readily available for burglar alarm systems and they are simple and robust.
Of course you don't really need an Arduino. A resistor and an LED would give an immediate indication.
...R
Thanks Robin!