tutorials

Ruby developer Avdi Grimm gives a seven-minute tour of Pharo Smalltalk's development environment, focusing on tools like search-by-example and the integrated, live coding experience.

A five-minute lightning demo of VisiData, a terminal tool for exploring and manipulating data. It uses two months of NYC 311 complaint data to drill down, plot points on a virtual map and save selected rows.

An overview of the PTVS 2.0 beta feature for debugging Python and C/C++ together in one session in Visual Studio.

Arthur Ganson's kinetic sculpture chains twelve 1:50 worm gear reductions so the final gear, embedded in concrete, would take over two trillion years to turn once.

David Heinemeier Hansson builds a blog engine with Ruby on Rails in 15 minutes, the demo that launched Rails' momentum.

Bob Nystrom shows his process for hand-drawing the diagrams in his book Crafting Interpreters, from pencil sketches to tracing and inking. It is a time-lapse of the whole illustration workflow.

A short demo of interactive AI live painting in Krita using the Stable Diffusion plugin, where canvas changes update the generated image immediately. It uses an LCM sampler for speed and needs a high-end GPU for the interactive feel.

Footage shot with a Nikon P1000 superzoom camera showing extreme optical zoom on distant targets from Ben Lomond in Scotland.

Theo Jansen shows many of his Strandbeests, wind-powered walking kinetic sculptures, set to Khachaturian's Spartacus. It presents his work since 1990 on creating new forms of life on beaches.

A short look at CoeLux, an artificial skylight that recreates the scattering process that makes the sky look blue, producing a convincing illusion of distant sun and depth.

Applied Science shows how telecentric and hypercentric optics differ from normal lenses, producing no or negative perspective. The video builds a telecentric system from a Fresnel lens and demonstrates a lens that can see around objects.

Footage of Richard Box's art installation in which fluorescent tubes light up in the ground under high voltage power lines, showing the electric fields they produce.

An art project by Simon Weckert in which 99 smartphones pulled in a handcart create a fake traffic jam on Google Maps. A green street shows as red, which diverts cars to other routes.