ESP32 Brings New Features To Classic Geiger Circuit

There’s no shortage of Geiger counter projects based on the old Soviet SBM-20 tube, it’s a classic circuit that’s easy enough even for a beginner to implement — so long as t…

Mapping Litter In The Oceans From Space With Existing Satellites

Recently ESA published the results of a proof-of-concept study into monitoring marine litter using existing satellites, with promising results for the Mediterranean study area. For the study, six y…

How The 2022 CEZ Event Shows The Fragility Of Environmental Sensors In High-Risk Areas

In what reads somewhat like a convoluted detective story, the events unfolding at the Chornobyl Exclusion Zone (CEZ) in Ukraine during late February had the media channels lighting up with chatter …

Rapid Prototyping To Measure Turbidity In Rapids

[RiverTechJess] is in the process of getting a PhD in environmental engineering and has devoted a chapter to creating a turbidity sensor for river network monitoring. Environmental sensing benefits…

Lending A Helping Hand To Hens With AI

As anyone who has taken care of chickens or other poultry before will tell you, it can be backbreaking work. So why not build a robot to do all the hard work for us? That’s precisely what [Aktar Ku…

Discreet CO2 Monitor Hides Elegant Internal Layout

Outwardly, this sleek CO2 monitor designed by [Daniel Gernert] might look like something cooked up in Amazon’s consumer electronics division. But open up that 3D printed case, and you’l…

Download From NFC Datalogger, No App Required

The plethora of wireless technologies has made internet-connected devices the norm, but it’s not always necessary if you don’t need real-time updates. Whether it’s due to battery …