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Turbine Transport Transformer
[Concept] Transforming turbine transport
Самодельный SDR приемник на Zynq
В этой статье я расскажу о том, как я делал предельно дешевый КВ Web-SDR приемник на SoC Zynq.
Основа приемника — Б/У плата Antminer S9. Фактически этот проект является форком уже существующего приемника WEB-888, который, в свою очередь, является продолжением приемника KiwiSDR.
Читать далееInside the Apollo "8-Ball" FDAI (Flight Director / Attitude Indicator)
During the Apollo flights to the Moon, the astronauts observed the spacecraft's orientation on a special instrument called the FDAI (Flight Director / Attitude Indicator). This instrument showed the spacecraft's attitude—its orientation—by rotating a ball. This ball was nicknamed the "8-ball" because it was black (albeit only on one side). The instrument also acted as a flight director, using three yellow needles to indicate how the astronauts should maneuver the spacecraft. Three more pointers showed how fast the spacecraft was rotating.
An Apollo FDAI (Flight Director/Attitude Indicator) with the case removed. This FDAI is on its side to avoid crushing the needles.Since the spacecraft rotates along...
Baseliner: A Deep Dive into Wireless Sensor Networks for Conservation
Join us for this hands-on workshop at ICCB 2025. We'll deep dive into deploying and maintaining in situ wireless sensor networks for environmental monitoring and verification of conservation and restoration projects at scale.
The post Baseliner: A Deep Dive into Wireless Sensor Networks for Conservation first appeared on Freaklabs.
The post Baseliner: A Deep Dive into Wireless Sensor Networks for Conservation appeared first on Freaklabs.
Precision Clock Mk IV
[Hardware] GPS synchronised, millisecond precision, automatic timezones and more!
Reverse engineering the 386 processor's prefetch queue circuitry
In 1985, Intel introduced the groundbreaking 386 processor, the first 32-bit processor in the x86 architecture. To improve performance, the 386 has a 16-byte instruction prefetch queue. The purpose of the prefetch queue is to fetch instructions from memory before they are needed, so the processor usually doesn't need to wait on memory while executing instructions. Instruction prefetching takes advantage of times when the processor is "thinking" and the memory bus would otherwise be unused.
In this article, I look at the 386's prefetch queue circuitry in detail. One interesting circuit is the incrementer, which adds 1 to a pointer to step through memory. This sounds easy...
Von der Idee zur RFID-basierten Start-up-Lösung – wie das Fernstudium zur Gründungsbasis wird
Ein Unternehmen während des Fernstudiums gründen? Für einige mag dieses Vorhaben nach echtem Stress klingen. Bei genauer Hinsicht zeigt sich jedoch, dass es durchaus von Vorteil sein kann, zu lernen und gleichzeitig die Basis für ein Start-up zu schaffen. Dies gilt unter anderem dann, wenn die betreffenden Personen sich für einen Bereich entschieden haben, der […]
Der Beitrag Von der Idee zur RFID-basierten Start-up-Lösung – wie das Fernstudium zur Gründungsbasis wird erschien zuerst auf RFID | Allgemeine Information | Risiken & Schutzmöglichkeiten.
Free Stuff - February 2025
The belated February 2025 recipient for the Great Scott Gadgets Free Stuff Program is Cles Facil, one of the oldest French student astronautics clubs, operating at INSA Lyon in France. They are currently working on a project to track rockets in flight using multi-lateration. They plan to use HackRF One on the rocket to transmit signals in the 868 MHz ISM band to multiple ground stations with RTL-SDR receivers and measure velocity using the Doppler effect. The students of Cles Facil will be participating in this year’s C’Space, a national event organized by CNES where students launch experimental rockets.
Cles Facil...
Free Stuff - January 2025
The belated January 2025 recipient for the Great Scott Gadgets Free Stuff Program is Tobias Trauth on behalf of H.O.M.E. makerspace, which is part of Ravensburg-Weingarten University of Applied Sciences. Tobias has informed us that members of H.O.M.E. are interested in amateur radio (called Amateurfunk in Germany) and have access to older equipment, but are looking to upgrade to more modern gear.
The folks at H.O.M.E. will be creating a portable setup that can communicate over QO-100, a well-known geostationary satellite, consisting of HackRF One, a 5W PA, and a 200Ah LiFePo4 Battery in a custom housing that will contain potential...
Free Stuff - December 2024
The belated December 2024 recipient for the Great Scott Gadgets Free Stuff Program is Adrian Lam from Victoria, Australia! Adrian is a high school STEM teacher at a small, independent school and wants to create a Wireless Exploration Lab for his students, aimed at teaching the fundamentals of wireless communication systems.
The Wireless Exploration Lab will introduce students aged 14-18 to concepts such as radio wave propagation, spectrum analysis, and digital modulation, linking these concepts to the science/technology curriculum and real-world applications like IoT, mobile networks, and satellite communications. Once the lab is ready, students will lead a project of designing...