Analog Computers

THAT — The Analog Thing · Deep Dive · 2020s

THAT — The Analog Thing

A modern open-source desktop analog computer — patch op-amps to solve differential equations in real time.

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Volumes

  1. Vol 1 THE Analog Thing — Volume 1 — Overview & the modern-analog revival What THAT is, who built it, why analog returned, and how to decide whether it belongs on the bench — context for Vols 2–8
  2. Vol 2 THE Analog Thing — Volume 2 — Hardware & architecture From USB-C rail to patch jack: the physical and electrical substrate on which Volumes 3–6 build their programs
  3. Vol 3 THE Analog Thing — Volume 3 — Computing elements & patching Element-by-element reference for THAT's patch field: integrators, summers, multipliers, comparators, coefficient pots, and the +/−10 V machine-unit convention
  4. Vol 4 THE Analog Thing — Volume 4 — Programming Turning differential equations into patches: scaling, timing, and coefficient setting on THAT
  5. Vol 5 THE Analog Thing — Volume 5 — Worked examples & applications Six fully-scaled patch walkthroughs with equations, SVG diagrams, and coefficient tables; companion to Vol 3 (elements) and Vol 6 (hybrid)
  6. Vol 6 THE Analog Thing — Volume 6 — Expansion & hybrid Scaling compute resources across multiple THATs, daisy-chain control bus, and bridging to digital systems via the HYBRID port
  7. Vol 7 THE Analog Thing — Volume 7 — Comparison & context Where THAT sits on the spectrum from Heathkit tube toys to EAI floor consoles and what the modern market offers
  8. Vol 8 THE Analog Thing — Volume 8 — Cheatsheet (field-grade) Field-ready reference panels distilling Vols 1–7: jack colors, element counts, scaling algebra, patch recipes, mode sequences, daisy-chain wiring, and the full spec card — all on one bench