Moitessier HAT

AIS receiver with GNSS

Full, open-source marine navigation features for the Raspberry Pi, officially supported by OpenPlotter.

Raspberry Pi HAT

The Moitessier HAT is a Raspberry Pi compatible Hardware (“Attached on Top”). Designed for plug-and-play compatibility with OpenPlotter system, it features a 2-channel and high sensitive AIS receiver, a GNSS receiver and even more.

High-sensitivity dual channel AIS receiver with SMA antenna connector

Sensitivity: -112 dBm min.

High-performance GNSS receiver

Integrated patch antenna plus support for external antenna via BNC connector

Standalone usage or in combination with Raspberry Pi

Fully compatible with Raspberry Pi models supporting 40-pin IO header

3 status LEDs

AIS status, GNSS status, Error

Navigate with OpenPlotter

OpenPlotter makes an integrated Open-Source chart-plotter and navigation platform running on a Raspberry Pi. It is based on the well-known OpenCPN software. You may use OpenPlotter in a headless mode as well – access OpenPlotter desktop from the cockpit through your mobile devices.

User Guide

Learn how to use the Moitessier HAT

The user guide will focus on the following topics:

  • Installing/removing the HAT
  • Using the HAT with and without OpenPlotter
  • Compiling the software
  • Receiving NMEA data over Wi-Fi using various navigations apps

Technical Specification

  • Supply voltage: 3.135 V min., 3.465 V max.
  • Current consumption: 185 mA
  • Operating temperature range: -20 – 65 °C
  • Dimensions: 69×57 mm
  • Weight: 39g
  • Interface (as seen from Raspberry Pi):  SPI
  • Input Frequency: 161.975 / 162.025 MHz
  • Input Sensitivity: < -112 dBm
  • Output Data Rate: 9600 bits/s
    Packet Interval: 37.5 Hz
  • BT: 0.5
  • Interface (as seen from Raspberry Pi): SPI
  • Data Rate: 9600 bits/s
    Packet Interval: 1 Hz
  • Channels: Acquisition: 99; Tracking: 33
  • Supported Satellite Systems: GPS, GLONASS, QZSS
  • Sensitivity: Acquisition: -148 dBm; Tracking: -165 dBm

Firmware and Drivers

Precompiled Packages

We provide ready-to-install .deb packages for major kernel releases of Raspbian Stretch. Please, select the package that fits to your kernel version.


Installation via Command Line

sudo dpkg -i package_name.deb

Latest Downloads

Raspbian Buster

We do NOT yet support Raspbian Buster. You may download the following packages for testing purposes only.

Packages for Raspberry Pi 3 only.

Package Kernel Version Moitessier Firmware Version
Buster: moitessier_4.19.57_armhf.deb, checksum
4.19.57 1.3.0


Raspbian Stretch
Package Kernel Version Moitessier Firmware Version
moitessier_4.19.66_armhf.deb, checksum
If directly updating from 4.14.x do: Install – Reboot – Install again
4.19.66 1.3.0
moitessier_4.19.58_armhf.deb, checksum
If directly updating from 4.14.x do: Install – Reboot – Install again
4.19.58 1.3.0
moitessier_4.19.57_armhf.deb, checksum
If directly updating from 4.14.x do: Install – Reboot – Install again
4.19.57 1.3.0
moitessier_4.19.42_armhf.deb, checksum
Special installation instruction: Install – Reboot – Install again
4.19.42 1.3.0
moitessier_4.14.98_armhf.deb, checksum 4.14.98 1.2.2
moitessier_4.14.79_armhf.deb, checksum 4.14.79 1.2.2


All Downloads

You find all pre-compiled .deb packages at our download server

The release directory lists kernel versions at the top level. Each kernel-version directory consists of the moitessier release versions that have been built for the specific kernel version.

Find Firmware and Drivers for Raspberry Pi Moitessier HAT on GitHub

You will find all related source code on GitHub: Moitessier HAT source code on GitHub

The respository consists of several submodules that include the following:

  • Linux device driver to communicate with the HAT
  • User tools/applications to configure the operation mode and to update the firmware of the HAT
  • Firmware of the HAT microcontroller
  • Device tree and appropriate tools to write the ID EEPROM

Each submodules includes a file for detailed information.

Available Ressources

User Guide

Learn how to use the Moitessier HAT. The user guide will explain how to install and to remove the HAT from the Raspberry Pi. It will illustrate how you can read data from the HAT using OpenPlotter.
Want to read data via Wi-Fi? Read the user guide to get detailed information on this topic.

read more

Safety Advices

Advices to properly handle your Moitessier HAT device     Damage to the device can occur as the result of improper handling or electrostatic discharge (ESD). Always handle the device with care to avoid damage to electrostatically sensitive components. Only handle by...

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