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Home Assistant is open source home automation that puts local control and privacy first.
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How do I run power to a USB-C powered sensor? (lemmy.nz)

submitted 1 week ago* (last edited 1 week ago) by Dave@lemmy.nz to c/homeassistant@lemmy.world

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I'm just bought an Airgradient air quality sensor (actually two, an indoor and an outdoor).

I want to mount the outdoor one but it needs a USB-C power supply. I can run a cable but power isn't exactly close. Do I somehow find a 10m USB-C cable and run it through the roof to the sensor that I mount on the side of the house? What's a normal way of getting USB-C power to an area far away from the closest power point?

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[–] KaninchenSpeed@lemmy.blahaj.zone 2 points 1 week ago (2 children)

You could get a cheap usb a to c 2.0 cable, cut it and extend the wires with some 4 conductor J-YStY cable or what ever is common where you live. The sensor probably doesnt use enough power to cause a significant voltage drop.

[–] Dave@lemmy.nz 2 points 1 week ago (1 children)

You can buy long USB C cables, just wondering if that's a good option. Someone else mentioned quite a drop in power delivery with a long cable so I'm thinking POE with a USB adapter might be the best option.

[–] KaninchenSpeed@lemmy.blahaj.zone 2 points 1 week ago

Voltage drop probably isn't a problem here, because your sensor draws verry little power. If you can get POE for cheap then thats a better option.