Homey Pro: Robust Zigbee Mesh and “Last State” Simulation
Hardware: Homey Pro (Flow Advanced), Gledopto LED Controllers (Zigbee), Shelly 3EM (3-phase monitor), ZBMINIR2 (currently cutting power).
The Challenge: Gledopto controllers lack a configurable “Power On Behavior” and return ON after an outage. Our current fix uses the ZBMINIR2 to cut power, but this destabilizes the Zigbee mesh as controllers (routers) go offline.
Goal: Simulate a reliable “Last State” WITHOUT removing power from the Gledopto controllers (to ensure mesh stability, as the Homey hub is on a UPS).
Critical Failure Point: Shelly 3EM Failsafe
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The Shelly 3EM is powered by Phase 1. If Phase 1 fails, the Shelly goes offline/unavailable, preventing Homey from receiving the required low voltage reading (it won’t report 0V).
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Mitigation: We need a robust failsafe Flow that registers a power failure (
bl_has_power_failed = true) if the Shelly 3EM device status changes to unavailable in Homey.
Proposed Solution (Better Logic Variables)
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Use Persistent Better Logic Variables (e.g.,
bl_led_state) to store the desired ON/OFF state of each light. -
The auxiliary switch (3-Way) flow will only Toggle the Variable. A separate Flow will then command the Gledopto controller based on the variable’s state change (decoupling).
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A restoration Flow, triggered by the return of power (Shelly back online or voltage > 100V), restores the lights based on the saved variable state.
Questions for the Community:
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Storage Method: For persistent “Last State” storage, which is more reliable and performant: Better Logic Persistent Variables or the built-in Zone Memory feature?
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Saving Trigger: If using Zone Memory, when is the best time to save the zone state: a) Continuously (on every light state change) OR b) Only when the Shelly 3EM detects a power failure (low voltage or device unavailable)?
