How to build your own air quality meter with a Raspberry Pi and CO2 sensor

In winter, it’s important to ventilate living and working spaces regularly. Here’s how to make a homemade measuring station ...

Most sensitive radio observations to date find no evidence of technosignature from 3I/ATLAS

I/ATLAS was first discovered on July 1, 2025, it has garnered much attention, including speculation, hopes and fears that it ...
EDN

Magnetometers: Sensing the invisible fields

A magnetometer is a device that measures magnetism: the direction, strength, or relative change of a magnetic field at a ...
CNX Software

Elecrow AI starter kit turns NVIDIA Jetson Orin Nano into a learning platform with 11.6-inch display, 30 electronics modules

Elecrow AI Starter Kit for the NVIDIA Jetson Orin Nano turns the NVIDIA Jetson Orin Nano into a learning and educational kit ...
CNX Software

LoRa, BLE, and GNSS tracker supports open-source software, solar charging, outdoor and indoor tracking

Designed by Ruictec in China, the TD04 is a LoRa-based low-power tracker that also features BLE and dual-band GNSS. It ...