Where things stand.

Sentinel Alarm ↗

Useful aquarium alarms are the starting point, but there’s more to the project. Start with a small, inexpensive display board and the basics of how it works. Discover, experiment and take your learning as far as you want—from your first electronics project to deeper work with code and connections. You supply the hardware and set the pace.

Join the Sentinel Alarm waitlist ↗

Next evidence needed: supported hardware requirements, documented alarm behavior and a tested firmware release.

Sentinel Flow ↗

Bring pumps from different brands together in one coordinated approach to flow. Sentinel Flow uses real data from 10 reef locations to shape natural water patterns, with the timing adjusted to your location.

Next evidence needed: a published pump compatibility list, reef data sources, timing configuration and safe setup guidance.

Sentinel Link ↗

Sentinel Link is an integration exploration, not a released bridge. Protocol access, device support, and a practical architecture still need investigation and verification.

Next evidence needed: protocol feasibility, a documented architecture and repeatable device tests.

Sentinel Vault ↗

Complete and functioning in my personal setup: local HYDROS monitoring and outlet control, including temperature, alerts, data freshness and controller health. Bus power visibility includes voltage and current. The implementation stays private; no public integration is offered.

Public scope: Complete and functioning in my personal setup. Technical methods and implementation remain private; no public download, general compatibility guarantee or manufacturer API approval is offered.

Sentinel for Mac ↗

Complete and functioning in my own setup: a Mac app aggregating Apex and GHL equipment, including GHL devices without supported APIs, with alarming and Home Assistant integration. Built to improve awareness and get more from the equipment already on the aquarium. Personal project only; not available for others to use.

Public scope: Complete and functioning in my own setup: Apex and GHL aggregation, alarming and Home Assistant integration. Personal project only; not available for others to use.