schematics

schematics

A channel for sharing schematics, processes, and everything in between. Viewing the internal systems of things we love.

conrad pfp

If anyone is interested in becoming a member of the /schematics channel, feel free to message me! I'm happy to have more people sharing interesting things here. Florence Kelley, Chicago Wage Maps, 1895.

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comz pfp

how the SNES graphics system works If we zoom into the graphic system, we find four chips. One is called the Pixel Processing Unit 1 (PPU1), labeled 5C77. Another is called the Pixel Processing Unit 2 (PPU2), labeled 5C78. The two remaining are 8-bit 32KiB SRAM chips. https://fabiensanglard.net/snes_ppus_how/

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Vanessa Williams pfp

Vanessa Williams

Let’s see if this works.

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Paul Prudence pfp

Having trouble tracking down the source publication of this illustration but it is too good not share. Found in a research folder on an old computer while I trying to track down something unrelated today.

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Paul Prudence pfp

Kernschede illustration - Meijer, J.G, 1905 via Koninklijke Bibliotheek

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comz pfp

Lissajous Quiz, Popular Electronics (1980) an unknown frequency can be determined by applying it to a scope's vertical terminals, while a signal of known frequency is applied to the horizontal. The resulting display, a Lissajous pattern, can then be analyzed to find the unknown. The ratio between the frequencies is equal to the ratio of the number of cycles (including halves) produced in each direction. For example, if there were 3.5 horizontal cycles and two vertical, the ratio would be 3.5:2 or 7:4. Then, if the horizontal frequency were 1000 Hz, the unknown would be 7/4 times 1000 or 1750 Hz. See if you can determine the unknown frequencies for the Lissajous patterns shown here. Answers are below.

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comz pfp

sketch pad, computer controller cookbook by tom & kelda riley (1983)

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Sine pfp

@sinusoidalsnail

Tesseracts (hypercubes) from "The Fourth Dimension" by Charles Howard Hinton (1904)

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Sine pfp

@sinusoidalsnail

Notation showing the positions of the arms in 18th century ballet From "Traite sur l'art de la danse" (Malpied, 1789)

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Paul Prudence pfp

There is some chance I've already posted these, but I am not sure. I first came across these stunning geological diagrams via @geoffmanaugh on X. originally published by the United States Geological Survey ↓↓↓ For more

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Paul Prudence pfp

~△ Illustration from Merkwurdige phanomene an und durch verschiedene prismen: zur richtigen wurdigung der Newton'schen und der von Gothe'schen farbenlehre - Johann Friedrich Christian Werneburg, 1817

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Paul Prudence pfp

Frauhofer patterns from 'Diffraction in the Fundamental Laws of Wave Theory - Friedrich M Schwerd [1835]

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Paul Prudence pfp

Might make a good design for a music studio sound diffuser (geometry based on prime numbers)? Axonometric Drawing Konrad Puschel, Bauhaus, 1929

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Paul Prudence pfp

Illustration from Le Dictionnaire encyclopédique Quillet (date not certain but most likely the 1934 ed?)

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Diagrams of the "K-system" by Hiroshi Kawano. Via @satoshi-aizawa on X

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