I keep notes here on the sensors and boards running in my flat. Nothing is for sale.
-
Matter over Thread, from the bench
A weekend with a border router, a sleepy end device, and a dataset I should have backed up first.
-
MQTT discovery for a board I etched myself
Retained birth messages, a stable unique id, and why the device registry stopped duplicating the node.
-
A Home Assistant integration for a ventilation board
The controller speaks a short serial protocol. A custom integration was less fiction than a pile of template sensors.
-
A Zigbee2MQTT converter for a nameless switch
Four gangs, one Tuya datapoint map, and an external converter that stops treating every press as a battery report.
-
An ESPHome component for a CO2 sensor
SCD41 on a quiet wall, one sample a minute, and the calibration mistake that made the living room look like a brewery.