The Mini Differential IR height sensing board for 3D printers provides the following features: A differential modulated IR height sensor. The sensor detects the target height by looking for the reflected light from two separate LEDs to be equal. The two LEDs are positioned such that they reflect light into the sensor at slightly different heights. This…

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An explanation of how to implement a simple hash table data structure, with code and examples in the C programming language.

This is a translation of the article I originally wrote in Russian a year ago.Lately, after Elon Musk bought Twitter, people have started looking for its alternatives – and many found one in Mastodon.Mastodon is a decentralized social media platform that works on the federation model, like email. The federation protocol is called ActivityPub and is a W3C standard, and Mastodon is far from being its only implementation, albeit it is the most popular one.

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An experiment in javascript-free syntax highlighting, made possible by opentype contextual alternates and COLR table

Can we build a reactive notebook in a single HTML file? Yes (by standing on the shoulders of Observable)

ASCII delimited text solves the problems exporting and importing structured text files and is part of the design of the character set. Unfortunately a lot of people and systems use CSV and other printable delimiters such as tab that are broken by design.