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Topic: Wireless window sensor (Read 3847 times) previous topic - next topic

Scott Baker

I want to wire up an alarm sensor on my window so my arduino will know when it's opened. I can't run wire to the sensor so it needs to be wireless. I know you can get DIY wireless window kits that run on batteries and last years before you have to change the battery.

How would I do that with an arduino? All I need to know is "is the alarm sensor tripped" so I think an XBee is way overkill. How can I do something like this in the most battery efficient way possible?

Scott Baker

Something like one of these...


I'm mainly worried about battery life.

Scott Baker

I was wondering if you'd need a microcontroller at the window end to control the wireless.

Those items from goldmine would be PERFECT. I wonder what it would take to get an arduino to receive a signal from them.


You can do that with a simple magnetic reed relay a wall wart and something to make sound.
If it was designed by man it can be repaired by man.


You may want to look at hacking a cheap wireless doorbell like below. Walmart use to have them for ~$10. Has both transmitter and receiver included.

Google forum search: Use Google Search box in upper right side of this page.
Why I like my 2005 Rio Yellow Honda S2000  https://www.youtube.com/watch?v=pWjMvrkUqX0

Scott Baker

Zoomkat I love that idea! Genius!

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