Zigbee2MQTT QoS Explained: What It Actually Guarantees
Zigbee2MQTT's qos setting only confirms delivery to your MQTT broker, not that the Zigbee radio command reached the device. Here's the gap explained.
~/archive $ ls -la
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mqtt
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Zigbee2MQTT Exposes to HA Entities: Why You Get That Type
Why a Zigbee2MQTT expose becomes a number, a select, or a plain sensor in Home Assistant. The access bitmask and the category attribute, explained.
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Zigbee2MQTT Discovery Not Working in Home Assistant
Zigbee2MQTT devices showing in the frontend but missing from Home Assistant means MQTT discovery broke, not Zigbee. Here's the real mechanism and fix.
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Zigbee2MQTT Extensions vs External Converters Explained
Zigbee2MQTT extensions change runtime behavior, not device support. Here's how they differ from converters, and how enable_external_js gates both.
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Zigbee2MQTT adapter_concurrent: What It Actually Controls
adapter_concurrent shows up in Zigbee2MQTT's advanced config with no explanation. Here's what the maintainer says it actually does — a command queue depth, not a signal or bandwidth dial — and when raising it is (and isn't) the fix.
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Zigbee2MQTT Reporting Configuration: min/max Intervals
A slow-updating sensor and a broker-flooding device share the same cause. How Zigbee2MQTT's min/max reporting interval and reportable_change actually work.
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Zigbee2MQTT Battery % Stuck or Wrong: Why It Happens
Zigbee2MQTT battery percentage stuck at 100%, over 100%, or frozen? What battery, voltage and battery_low each measure, and which one to trust.
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Zigbee2MQTT Install Codes: Why Some Devices Need Them
Hit \"Unsupported install code\" in Zigbee2MQTT? Which devices need one, why the printed code often isn't the whole code, and how to add it locally.
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Zigbee2MQTT Unavailable After HA Restart: bridge/state
Every Zigbee2MQTT entity goes unavailable after a Home Assistant restart while Zigbee2MQTT itself looks fine. One MQTT topic explains it. All fixes stay local.
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Zigbee2MQTT Event Entities vs Legacy Action Sensor Explained
Zigbee2MQTT 2.0 switched off the sensor.*_action entity your button automations used. Here's what replaced it, and which local path to rebuild on.