Vibrato by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Euclidean algorithm by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Internationalism by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Multidimensional Fourier transform by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Lecture notes:
Video 1.
How the 2D FFT works by Mike X Cohen (2017)
Source. Animations showing how the 2D Fourier transform looks like for simple inpuf functions.
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Football variant by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Universal quantification by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Paper by Erwin Schrödinger by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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English slang by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Marco Reps by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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This mostly faceless German dude is awesome!
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Crystal oscillator by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Video 1.
From Raw Crystal to Crystal oscillator
. Source. by United States Army Signal Corps (1943)
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Jump wire by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Notably used to connect:
You can buy large sets of them in combitation of male/male, male/female, female/female. Male/male is perhaps the most important
Video 1.
Making Jumper Wires by PCBurn! (2018)
Source.
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Available battery voltages by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Only certain battery voltages exist, because this voltage depends intrinsically on the battery's chemical composition.
learn.sparkfun.com/tutorials/battery-technologies/all (CC BY-SA) has a very good summary list, reordered from lowest to highest voltage:
Battery ShapeChemistryNominal VoltageRechargeable?
AA, AAA, C, D (Rechargeable)NiMH or NiCd1.2VYes
AA, AAA, C, and DAlkaline or Zinc-carbon1.5VNo
Coin CellLithium3VNo
Silver Flat PackLithium Polymer (LiPo)3.7VYes
9VAlkaline or Zinc-carbon9VNo
Car BatterySix-cell lead acid12.6VYes
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Characteristic polynomial by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Spectral theorem by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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E-book viewer by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Direct current source by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Analog-to-digital converter by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Many/most microcontroller boards have analog-to-digital converters built into them, it is very convenient. E.g. it is the case for the Raspberry Pi Pico.
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Voting by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Orange Papers by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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Cryptocurrency mining by Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
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