Smart home automation recipes and local sensing chains — HearthNodes
HearthNodes publishes working smart-home automation recipes: trigger, conditions, actions, hardware and the exact YAML. Filter by protocol, follow the topology, copy the recipe.
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matter
thread
zigbee
zwave
wifi
Presence
Presence and geofence
Departure standby sweep with a 12-device check list
When the last person leaves, a 45-second sweep walks a fixed list of twelve devices, turns off what should be off, and refuses to touch the freezer, the router or the server shelf. Reports back one summary notification instead of twelve.
zigbee
45000 ms
Room-following light that tracks you along the corridor
Three Thread presence sensors hand a single 20 % light level from zone to zone so the corridor is lit 2 m ahead of you and 4 m behind, without ever lighting the whole run at once. Measured handoff latency 600 ms.
thread
600 ms
Arrival warm-light handoff on the hall mmWave
A 60 GHz mmWave sensor in the entry hall turns on a 2400 K two-fixture scene the moment you step in, holds it for 12 minutes, and refuses to fire in daylight. Total detect-to-light latency measured at 850 ms.
matter
850 ms
Light
Light and daylight
Twilight path lighting keyed to sun elevation, not a clock
Garden path lights come on when the sun hits -4° elevation and dim to 30 % at -12°, so the transition takes 25–40 minutes depending on the season and never looks like a switch was thrown.
zwave
30000 ms
Lux-adaptive blinds that hold 300 lx on the desk, not a fixed percentage
A closed-loop controller reads a desk lux sensor every 90 seconds and moves the blind to the position that keeps the desk between 250 and 400 lx. On an overcast day it opens fully; on a bright February noon it sits at 22 % open.
matter
90000 ms
Climate
Climate and air
Night cooling purge that pulls in cool air only when it helps
On summer nights the bedroom window opens automatically only when outdoor air is at least 3 °C cooler than indoors and indoor CO₂ is above 900 ppm, closing at 05:30 or when outdoor temperature rises within 1.5 °C of indoor.
matter
180000 ms
Bathroom fan that runs until the humidity gradient flattens
The fan does not run for a fixed 20 minutes. It runs until the absolute humidity stops falling, which is typically 11 minutes after a 4-minute shower and 26 minutes after a bath — a 38 % reduction in fan runtime over a timed schedule.
zigbee
2000 ms
Energy
Energy and load
Divert solar surplus to the hot water cylinder instead of exporting at 4 ¢
The immersion heater steps up in 400 W increments to absorb PV surplus, holding grid import between -50 W and +150 W for four hours. In a 4.2 kWp array this captured 6.8 kWh on a clear April day instead of exporting it at the feed-in rate.
matter
60000 ms
Nightly phantom-load audit that finds the 38 W you forgot about
At 03:00 the house is quiet, so the automation reads every metering plug and ranks standby draw. A first run found 38 W of permanent load — 333 kWh a year — from a games console, a printer and an old set-top box.
zigbee
60000 ms
Water
Water and leak
Safety
Access and safety
