System Online NMEA 2000 · Signal K · ESP32

Marine IoT hardware
built for the open ocean

Open-source monitoring and automation nodes for serious sailors. Drop-in NMEA 2000 compatibility, Signal K integration, and hardware designed to survive offshore conditions.

N2K Drop-in compatible
10Hz GPS update rate
OSS Open source firmware
OTA Wireless updates
Hardware

Featured products

Precision-engineered nodes for NMEA 2000 networks. Plug in, configure, sail.

yarrboard

Protected: Open Hardware Watermaker Controller

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Integration

How it works

A Marine-o-Matic node connects directly to your NMEA 2000 backbone and publishes data to Signal K — no drivers, no config files.

01

Connect to N2K backbone

Micro-C or DeviceNet connector. Galvanically isolated CAN transceiver protects your bus.

02

Power up

Bus-powered or 12V direct. Boots in under 3 seconds and begins transmitting PGNs immediately.

03

Signal K picks it up

Standard PGNs appear in your Signal K server automatically. No plugin required.

04

MFD displays data

Raymarine, Garmin, Simrad — all see the data natively through the N2K bus.

Updates

From the logbook

Build notes, firmware updates, and offshore field reports.

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Open source

The firmware is yours

Fork it, extend it, contribute back. Every board ships with full PlatformIO firmware on GitHub.