EGU General Assembly 2020
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Multipurpose IoT network watchdog device with capability of add on sensors for multi instrument field stations.

Panagiotis Argyrakis1,2, Theodore Chinis2, Alexandra Moshou3, and Nikolaos Sagias1
Panagiotis Argyrakis et al.
  • 1University of Peloponnese, Informatics and Telecommunications, Tripoli, Greece (
  • 2National Observatory of Athens,Athens,Greece (
  • 3Hellenic Mediterranean University,Chania,Greece(

Several stations (seismological, geodetical, etc.) suffer from communications problems, such problems create data gaps in real-time data transmission, also excess humidity and temperatures further than manufacturer limits, usually make components and circuitry, of expensive instruments, failure, and results to unaffordable service or unrepairable damage.

We create a low-cost opensource device that will raise the reliability of the stations and secure the instruments from severe damage, such a device installed as prototype at UOA (University of Athens) seismological station KARY (Karistos Greece) for a year and the reliability of the station raised tremendously, since then the device upgraded to provide wireless connection and IoT GUI (mobile app). A local server was built to serve all the devices uninterrupted and provide a secured network.

The software is fully customizable and multiple inputs can provide addon sensors capability, for example, gas sensor, humidity sensor, etc., all the data are collected to a remote database for real-time visualization and archiving for further analysis.

The shell which covers the circuitry is 3D-printed with a high temperature and humidity-resistant material and it’s also fully customizable by the user. 

How to cite: Argyrakis, P., Chinis, T., Moshou, A., and Sagias, N.: Multipurpose IoT network watchdog device with capability of add on sensors for multi instrument field stations., EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-83,, 2020.


Display file

Comments on the display

AC: Author Comment | CC: Community Comment | Report abuse

displays version 1 – uploaded on 30 Apr 2020
  • CC1: Comment on EGU2020-83, Michael Prior-Jones, 01 May 2020

    Thank you for a very interesting poster! A few questions:

    • Which microcontroller did you use?
    • Was there a particular reason why you chose to 3D print a case rather than buy one?
    • Does the solar power also power your instruments, or just your watchdog system?

    Best wishes,

    Mike Prior-Jones (Electronic engineer, Cardiff University)

    • AC1: Reply to CC1, Panagiotis Argyrakis, 01 May 2020

      Dear Mike

      First of all thank you for your comments.

      At the prototype unit installed at seismological station KARY (Karystos) we used an Arduino Nano and only for resetting automatic the telemetry. After the successful testing we upgrade the microcontroller unit to NodeMCU to give us WIFI connectivity.

      For your second question, Our choice to use 3d printing was made to allow us to use any material we consider ideal for the operating conditions of the field station and basically our experience has shown that similar attempts to use a ready-made box with IP specifications forced the creation of holes using tools which were able to cause damage and destroy the specifications of the box. So with the 3D printing design, we essentially avoid interfering with the box and essentially keep the specifications and use the material that we choose, and above all, we can intervene in the case just before we produce it to any natural change we want.

      The solar panel and the power supply unit essentially can power all the field station. In our schematic you see only the part that powers the watchdog unit but yes you can design it to power all the instruments.