Eric Schlaepfer runs the popular engineering Twitter account @TubeTimeUS, where he posts cross section photos, discusses retrocomputing and reverse engineering, and investigates engineering accidents. Some of his better-known projects include the MOnSter 6502 (the world’s largest 6502 microprocessor, made out of individual transistors) and the Snark Barker (a retro recreation of the famous Sound Blaster sound card).