Founding developer Jean Rabault

Accessories for OpenMetBuoy

Founding developer Jean Rabault

Jean Rabault is a senior engineer at the Norwegian Meteorological Institute. He has a PhD in fluid mechanics from the University of Oslo, where his focus was to study water wave propagation in seas covered by ice. He believes understanding the interaction between waves and sea-ice will enable safer and environmental friendly human activities in the Arctic.

The OpenMetBuoy is an open-source wave-monitoring instrument with Iridium satellite link. The OpenMetBuoy was designed to create impact in many fields such as oceanography and polar science. It makes in-situ data streaming cheaper and more customizable than ever before.


The OpenMetBuoy collects GPS coordinates, movement with six degrees of freedom (6DOF), and temperature data (sensors optional). This data is streamed directly through an Iridium satellite modem. 
The user receives data through a Rock7 platform, either by email or through the website GUI. Rock7 charges iridium costs depending on the instrument configuration, see table 3 in publication.

The OpenMetBuoy should be powered by one or more LSH20 SAFT (3.6V D-cell) batteries or equivalent. NOT INCLUDED
Table 1 in the publication might help you decide on the number of batteries you need.

Developer friendly

You can easily configure and modify settings over USB using straightforward Python tools.

A collection of available firmware configurations makes the device ready-to-go.  
(The device comes with the steval_gps_waves_drifter firmware).

Carrier board

OpenMetBuoys produced by LABmaker have an electronic carrier board with sockets that carry all breakout boards needed, pull up resistors, space for super capacitors, and a circuit for temperature sensors to be connected. A magnetic switch on the board keeps the device turned off during transport, through an outside of the housing magnet.  

The carrier board has holes and pads for two D-cell battery holders and extra pads to solder three more batteries in parallel (additional batteries can be soldered to each pad). It fits perfectly in the small RND 455-01082 IP67 enclosure that comes with the product. 


  • OpenMetBoy LABmaker Carrier Board (populated)
  • PC Enclosure IP67
  • Sparkfun Artemis Global Tracker
  • STEVAL-MKI207V1 adapter with ISM330DHCX
  • Iridium Antenna with an interface cable (25cm)
  • Pololu 3.3V voltage regulator
  • Sparkfun Qwiic power switch
  • Sparkfun flexible Qwiic cable - 100mm
  • 2 x D-cell battery holder
  • 1x USB-C cable

Please note that the batteries are NOT included in the set.


  • Dimensions: 120x120x90mm
  • Artemis Global Tracker
  • Iridium 9603N Short Burst data modem
  • U-blox ZOE-M8Q GNSS receiver
  • Iridium / GPS / Glonass passive antenna
  • Adafruit ISM330DHCX - 6 DoF IMU
  • Magnetic reed switch to deactivate during transport
  • Space for 8 temperature sensors on carrier board
  • Space for supercapacitors on carrier board


J Rabault, T Nose, G Hope, M Müller, Ø Breivik, J Voermans, LR Hole, P Bohlinger, T Waseda, T Kodaira, T Katsuno, M Johnson, G Sutherland, M Johansson, KH Christensen, A Garbo , A Jensen, O Gundersen, A Marchenko, A Babanin. (2022) OpenMetBuoy-v2021: an easy-to-build, affordable, customizable, open-source instrument for oceanographic measurements of drift and waves in sea ice and the open ocean. MDPI

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