this post was submitted on 28 Nov 2025
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homeassistant
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Very nice, I love the overall effect. Once you have motion sensing are you planning on local reaction or more of a persistence approach? Like a motion sensor and then a timer for turning off or once someone enters the room keeping them on until they leave the room?
yea, havent decided if it will always be on, and brighten, or only turn on when someones there.
The energy cost should be nearly nill, a watt or two (it 12 watts at max, and im using it at 5% for standby!)
Nice. I would recommend measuring the usage not from what the device reports but from actually measuring at the wall socket. The conversion is likely meaningfully under the 95% efficiency of some tools and that waste is felt as heat. If you convert to 24V from 120V you will have a significant amount of heat as waste which is unreported in home assistant. If you have the option to use a relay it can actually turn the thing all the way off, allowing almost zero usage when not on, but it can be a little slower to respond.
Yea, my guess is just based on what the strip says (12+12 watts per meter)
Only wattmeter I have is an Ikea ZigBee plug, which does draw reporting. Could use that and measure it's wattage