Flow meter for tracking shower usage (every second: flow, temperature, after 30s of no flow: total volume, duration).
WiFi -> MQTT -> Telegraf -> InfluxDB -> Chronograf:
First used a Wemos D1 mini, then a Doit ESP32, then a Wemos D1 mini again.
All photos/videos: https://photos.app.goo.gl/8Zbm7jH6h51TRUgj6
See log.md for history/development notes.