Collaborate Disseminate
Although the RTL-SDR is cheap, accessible, and capable enough for many projects, it does have some important limitations. In particular, its bandwidth is limited to about 3.2 MHz, and the …read more Continue reading Building a $50 SDR with 20 MHz Bandwidth
Although it dates back to the early days of the Marconi Company in the 1920s, the Franklin oscillator has remained a relatively obscure circuit, its memory mostly kept alive by …read more Continue reading Building an LC Meter with a Franklin Oscillator
Those who stay into the forbidden realm of font rendering quickly learn how convoluted and arcane it can be – LaTeX is a fully Turing-complete programming language, Unicode has over …read more Continue reading Disassembling Opcodes with a Font
The rapidly-improving speed and versatility of digital computers has mostly driven analogue computers out of use in modern systems, as has the relative difficulty of programming an analogue computer. There …read more Continue reading Building an Analogue Computer to Simulate Neurons
There’s a well-known movie trope in which a hacker takes control of the traffic lights in a city, causing general mayhem or creating a clear getaway path. Unlike many Hollywood …read more Continue reading Spoofing an Emergency Traffic Preemption Signal
[Diffraction Limited] has been working on a largely 3D-printed micropositioner for some time now, and previously reached a resolution of about 50 nanometers. There was still room for improvement, though, …read more Continue reading Embossing Precision Ball Joints for a Micromanipulator
The construction of a large language model (LLM) depends on many things: banks of GPUs, vast reams of training data, massive amounts of power, and matrix manipulation libraries like Numpy. …read more Continue reading Building a Dependency-Free GPT on a Custom OS
Liquid nitrogen isn’t exactly an everyday material, but it’s acquired conveniently enough to be used in extreme overclocking experiments, classroom demonstrations, chemistry and physics experiments, and a number of other …read more Continue reading Homemade Liquid Oxygen Demonstrates Paramagnetism
There are some clocks, mostly in or around international airports, which have multiple faces to show the time at various cities around the world. Taking more a forward-looking approach is …read more Continue reading Interplanetary Clock Keeps Time Across the Solar System
The ancient question of whether or not it’s possible to construct a circle with the same area as a given square using only a drawing compass and straightedge was finally …read more Continue reading Running Pokémon with a Compass and Straightedge