Curve
Curve output changed
Zone Control
PI-based zone light controller with target lux, occupancy afterglow, and smooth fades.
Zone Control is a lux-based PID lighting controller for Homey.
It keeps each room at a target light level using a sensor and smooth dimming.
The result is stable, flicker-free light that feels natural all day.
How it works
The app reads measured lux (PV) and adjusts the lights toward the target (SP).
It applies soft fades, an occupancy afterglow, and PV–SP hysteresis to avoid flicker or overcorrection.
Daylight curve
Each zone can use a custom curve with 2–10 points.
It defines how brightness follows daylight: more output in low light, less as daylight rises.
Curves can be edited in device settings or sent as JSON via Flow.
Modes and limits
Select Auto, Manual, On, Off or Night.
Set minimum and maximum output to match your lights and comfort.
Why it stands out
PID control and hysteresis ensure smooth, stable behavior even with noisy sensors or fast daylight changes.
Supported devices
Flow cards
Click on a device above to show related Flow cards only.
When...
Fires when the curve device publishes a new output value.
Zone Controller
Turned on
Zone Controller
Turned off
Zone Controller
The dim level changed
Zone Controller
The luminance changed
Zone Controller
Lux input changed
Fires on every validated lux input change, including clear/unavailable transitions.
Zone Controller
Light level changed (0-100%)
Fires when the zone light level changes.
Zone Controller
Unoccupied (left)
Fires when the zone becomes unoccupied.
Zone Controller
Occupied (entered)
Fires when the zone becomes occupied.
Zone Controller
Zone active again (cancel timers)
Fires when the zone re-enters active state and timers are cancelled.
Zone Controller
Zone inactive (fade)
Fires when afterglow fade starts; token is the fade duration.
Zone Controller
Zone inactive (hold)
Fires when the inactive hold/off-delay starts after fade. Token is hold duration in seconds.
Zone Controller
Zone inactive (off)
Fires when the zone reaches full OFF after afterglow/hold has ended.
And...
Zone Controller
Is turned on
Zone Controller
Zone is in afterglow
Zone Controller
Zone is occupied
Zone Controller
mode is Mode
Then...
Curve
Set curve input = Value
Feeds a generic numeric input value to the curve device.
Curve
Set curve JSON = Curve JSON
Accepts either an array of {x,y} points or a full curve object with points and optional metadata.
Curve
Set curve specification = Curve spec JSON
Apply a full curve specification object, including points and optional formatting/dynamics metadata.
Zone Controller
Turn on
Zone Controller
Turn off
Zone Controller
Toggle on or off
Zone Controller
Dim to %
Zone Controller
Set relative dim-level %
Dim or brighten with respect to the device's current dim-level.
Zone Controller
Clear measured lux input
Invalidates the lux input immediately. No stale lux is retained for control.
Zone Controller
Set measured lux (PV) = Lux lx
Override/update the measured lux for the zone controller.
Zone Controller
Set mode = Mode
Switch control mode (auto/manual/on/off/night).
Zone Controller
Set occupied = Occupied
Sets occupancy state (true/false).
Zone Controller
Set light level = Lysniveau (%)%
Directly set output in Manual/On modes (clamped by UMAX).
Zone Controller
Set PID: Kp=... Ti=... Td=... β=... N=...
Optionally provide any subset of PID parameters.
Zone Controller
Set softstart to ...%
Set the softstart value (%).
Zone Controller
Set target lux = Lux lx
Set the lux setpoint for PI control.
Zone Controller
Set max output to ...%
Set the maximum output limit (%).
Zone Controller
Set min output to ...%
Set the minimum output limit (%).
Support
The developer of this app does not offer direct support.
What’s new
Version 4.0.7 — small fixes to pid
Zone Control
Zone Control is not compatible with the selected Homey.
Zone Control will install on Homey shortly.
Changelog
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