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Boundary sensing

Maru last edited by Maru

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.
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nagelc last edited by

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.
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Maru last edited by @nagelc

I've thought of that already but @nagelc thanks for the suggestion though!!
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Any updates on how this turned out?
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My Project • sensor • • mntlvr

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@BulldogLowell said: @mntlvr said: And if all six switches are set to gnd the total current would only be 1.5 ma (5volts /20k)x6=.0015 amps I believe. the internal pullup resistors are 20k-50k according to arduino spec. yeah, I know, but if you are underpowered already (the radio....) the extra draw may create an issue... who the heck knows. I'll try on one of mine when I get the chance... your code works, and that's a treat, but now I need to understand why the simpler execution of the same code doesn't seem to cooperate with your rig. weird... you code with pinMode(buttonPin[i], INPUT); exactly same board and USB power supply and same transceiver, here are the results Sending device info...sensor started, id 32 send: 32-32-0-0 s=255,c=0,t=17,pt=0,l=5,st=ok:1.4.1 send: 32-32-0-0 s=255,c=3,t=6,pt=1,l=1,st=ok:0 read: 0-0-32 s=255,c=3,t=6,pt=0,l=1:I send: 32-32-0-0 s=255,c=3,t=11,pt=0,l=13,st=ok:RemoteControl send: 32-32-0-0 s=255,c=3,t=12,pt=0,l=4,st=ok:1.15 Setting up Pin0 send: 32-32-0-0 s=0,c=0,t=0,pt=0,l=0,st=ok: Setting up Pin1 send: 32-32-0-0 s=1,c=0,t=0,pt=0,l=0,st=ok: Setting up Pin2 send: 32-32-0-0 s=2,c=0,t=0,pt=0,l=0,st=ok: Setting up Pin3 send: 32-32-0-0 s=3,c=0,t=0,pt=0,l=0,st=ok: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: read: 32-32-0 s=3,c=0,t=0,pt=0,l=0: Setting up Pin4 send: 32-32-0-0 s=4,c=0,t=0,pt=0,l=0,st=ok: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: read: 32-32-0 s=4,c=0,t=0,pt=0,l=0: Setting up Pin5 send: 0-0-0-0 s=5,c=0,t=0,pt=0,l=0,st=ok: read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch read: 36-81-0 s=0,c=5,t=0,pt=0,l=0: version mismatch Sensor presentation complete send: 0-0-0-0 s=3,c=1,t=16,pt=2,l=2,st=ok:1 Pin 3 changed state... New State: Tripped send: 0-0-0-0 s=0,c=1,t=16,pt=2,l=2,st=ok:1 Pin 0 changed state... New State: Tripped send: 0-0-0-0 s=1,c=1,t=16,pt=2,l=2,st=ok:1 Pin 1 changed state... New State: Tripped send: 0-0-0-0 s=2,c=1,t=16,pt=2,l=2,st=ok:1 Pin 2 changed state... New State: Tripped send: 0-0-0-0 s=3,c=1,t=16,pt=2,l=2,st=ok:0 Pin 3 changed state... New State: Not Tripped
Temperature Sensor, 0.1 degree precison
Hardware • temperature sensor • • Martin

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Hi! if it can help.. https://github.com/hallard/MAX31865-Breakout https://github.com/hallard/arduino-max31865
Home Assistant v 0.12
Home Assistant • sensor switch serial gateway home assistant • • martinhjelmare

2

3
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2
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Thanks again @martinhjelmare Upgrade went successfully.
How to measure freezing on buds
Hardware • sensor freeze bug • • pierrot10

21

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21
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2597
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@scalz Maybe this: https://en.wikipedia.org/wiki/Net_radiometer I'm not sure if it's overkill, but it does look like it would do the job.
Connect sensors directly to the Gateway (again)
Development • gateway sensor development • • mortommy

22

0
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22
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14535
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@Tmaster You give each sensor a child id (0-254) in the node.

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