This paper presents the design and implementation of SPiDR, an ultra-low-power spatial sensing system for miniature mobile robots. This acoustic sensor produces a cross-sectional map of the ...

Have you ever wondered what the invisible world of radio waves might look like if you could actually see it? Rootkid explains how his project, the Spectrum Slit, transforms the unseen chaos of ...

Abstract: Visible Light Communication (VLC), or Li-Fi, offers a promising alternative to conventional wireless technologies, particularly in RF-restricted or interference-sensitive environments.

DroneScan3D attached to a drone, which is not included with the instrument. As more tower sites adopt drones for maintenance tasks, one amateur radio operator has designed a field strength instrument ...

Abstract: This paper presents the design and evaluation of a distributed SDR-based wireless testbed for studying RF propagation and spatial fingerprinting across multiple bands. The platform comprises ...

I built a Raspberry Pi FM transmitter using only software without any external RF modules or transmitter HATs. Let me explain step-by-step. The Raspberry Pi, a versatile single-board computer, can be ...

SunFounder has sent me a review sample of the Pironman 5 tower PC case for the Raspberry Pi 5. I had already reviewed the Pironman case for Raspberry Pi 4 last year, so I’ll do something similar this ...

Jan Käberich’s LibreVNA is an open-source hardware USB vector network analyzer (VNA) based on a Spartan-6 FPGA, an STM32 microcontroller, and RF circuitry with MAX2871 and Si5351C chips. The ...