The 2022 general assembly of the EGU (European Geosciences Union) took place between the 3rd and the 8th of April 2022, in which two works within the scope of the SONDA project were presented, one with the title “Low-Cost, Fast Deployment Multi-Sensor Observations Of The 2021 Cumbre Vieja Eruption” (Click here to download the presentation), on the use of low-cost, easy-to-build and easy-to-implement sensors, and the other with the title “Air quality real-time monitoring during volcanic crises with low-cost sensors: the Cumbre Vieja volcano study case” about monitoring the air with the corresponding sensors.