<![CDATA[Boundary sensing]]>example

can you guys give me some suggestions on what type of sensors can i used to detect the existence or motion of an object once it pass through certain threshold of a boundary? I would like to create some kind of a room with transparent wall (the sensor range). I've depicted a drawing of a man in a transparent room as above.

]]>https://forum.mysensors.org/topic/9730/boundary-sensingRSS for NodeMon, 15 Jun 2026 11:12:04 GMTTue, 18 Sep 2018 07:08:19 GMT60<![CDATA[Reply to Boundary sensing on Mon, 24 Sep 2018 12:28:34 GMT]]>I've thought of that already but @nagelc thanks for the suggestion though!!

]]>https://forum.mysensors.org/post/93906https://forum.mysensors.org/post/93906Mon, 24 Sep 2018 12:28:34 GMT<![CDATA[Reply to Boundary sensing on Wed, 19 Sep 2018 02:32:05 GMT]]>Kind of old school, but you could use a laser, some mirrors and a detector. It would only work if they broke the beam however.

You might be able to use regular PIR motion sensors and cover part of the lens. Or possibly make a custom lens that sees a vertical slit . . ...

I just tried it on one of my PIR motion sensors. Black indelible ink did not work -- IR just goes right through. making a vertical slit by taping off with duct tape sort of worked. The width of the detection area spread out pretty fast, but it seems like it could work if you don't need too much precision. There might even be lenses for that purpose.

]]>https://forum.mysensors.org/post/93716https://forum.mysensors.org/post/93716Wed, 19 Sep 2018 02:32:05 GMT