Tech
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Quicksort Explained IKEA-Style
A wordless, flat-pack-furniture-style instruction sheet that teaches how quicksort works, part of a series of nonverbal…
QWERTY Jam
A playful experiment that turns your computer keyboard into a piano, so every key you press plays a note you can jam alo…
R for Data Science
A free online book that teaches data science with R, covering how to import, tidy, transform, visualize and model data u…
Rachel by the Bay
A prolific engineer's war stories from decades of production systems, outages, and debugging at large tech companies, to…
Racketmeter
A web tool that measures badminton racket string tension from the sound of a plucked string, using the microphone on you…
Rack-Mount Hydroponics
A hobbyist explains how he turned a spare server cabinet into a hydroponic lettuce farm, covering lights, pumps, nutrien…
Rad Type
A small project that asks whether typing on a gamepad can be made fast, offering an alternative to the slow on-screen ke…
Radio Shack Catalog Archive
An archive of Radio Shack catalogs from 1939 to 2011 that you can flip through page by page, full of vintage electronics…
Raft: Understandable Distributed Consensus
A step-by-step animated visualization of the Raft algorithm in which you watch servers elect leaders and replicate data,…
RaidPlan
A visual raid boss planner where you draw and share strategies for World of Warcraft, Final Fantasy XIV, Lost Ark and Ne…
RailRadar
A live GPS map showing every Indian Railways train as it moves, with real-time positions, speeds, delays, and running st…
Railway-News
A rail industry news portal covering operators, new rolling stock, signalling, and infrastructure projects from railways…
Rainbow
A hardware hacking write-up on displaying colour on a black-and-white monitor, with the experiments and electronics behi…
Rallly
An open-source, privacy-focused alternative to Doodle for creating group meeting polls, where participants vote on times…
Random
An ever-expanding series of small visual experiments by Vasilis van Gemert exploring what random numbers look like, from…
Random Hacker News Front Page
A button that drops you on the Hacker News front page from a random day in its history, a quick way to see what the tech…
Random International
The collaborative art studio behind Rain Room, where visitors walk through falling rain without getting wet, showing its…
RANDOM.ORG
A true random number service powered by atmospheric noise since 1998, with dice rollers, list shufflers, and coin flippe…
RandomCity
A generative map where real OpenStreetMap buildings are extruded in 3D and swept by restless, random patterns of light t…
rane's moonsugar musings
A homepage dressed up like an old Amiga desktop, with memory counters, a changelog, a blog about games and music, self-m…
Raspberry Pi
The official home of Raspberry Pi single-board computers and microcontrollers used for learning, hobby projects, and emb…
Raspberry Pi Foundation
The charity's learning hub for young people, with coding projects, free educational resources and teaching materials bui…
Raspberry Pi Microwave
A maker's write-up of hacking a microwave with a Raspberry Pi so it can scan QR codes on food packaging and set the righ…
Raspberry Pi Zero W Simultaneous AP and Managed Mode WiFi
A step-by-step tutorial for running a Raspberry Pi Zero W as a Wi-Fi access point while staying connected as a client to…
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