Ocean sensor data logging and aggregation for field researchers

Reefline is a lightweight CLI for collecting, timestamping, and syncing data from ocean sensors — temperature probes, tide gauges, pH sensors — to a central store.

$ reefline log --sensor ph --port /dev/ttyUSB0 --interval 60s

From the blog

March 28, 2026

First field deployment: three sensors off Faial, Azores

Deployed three Atlas Scientific sensors at 4m depth off Faial island. What worked, what didn't, and what I'm changing before the next trip.

February 15, 2026

Calibrating Atlas Scientific EZO sensors with Reefline

A step-by-step calibration walkthrough using Reefline's built-in calibration mode and Atlas Scientific's standard solutions.