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Tree Logger

Loggers measure temperatures inside trees and send them over LoRa through a gateway to the cloud. Follow every logger live, or connect to one nearby over Bluetooth.

Charts

NTC temperatures from every logger, received over LoRa. Choose a time range, zoom in, download CSV.

Open charts →

Logger app

Connect to a logger over Bluetooth: battery level and live NTC1 temperature. Can be installed as an app.

Needs Web Bluetooth: Chrome on Android or desktop. On iPhone use the Bluefy browser.

Open app →

How the data travels

  1. The logger measures every few seconds and stores the readings in its own flash.
  2. It sends them by LoRa (868 MHz) to the gateway, which forwards them to the cloud over LTE.
  3. The readings are stored and shown on the charts, usually within 10–20 seconds.