Input shaping is the math that finally lets a cheap 3D printer move fast without ringing on every corner. We walk what resonance actually is on a printer frame, how an ADXL345 measurement campaign reveals it, why the shaper convolves rather than filters, the difference between ZV/MZV/EI/2HUMP/3HUMP, why pressure advance is a separate problem on the extruder, and the honest setup complexity Klipper adds.
Firmware
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Klipper Input Shaping -
Power-Loss Protection When the rail collapses mid-write, an SSD has milliseconds to harden its volatile cache and its mapping tables before the lights go out. A tour of the hold-up energy problem, capacitor banks and 1/2 C V^2 sizing, what "data at rest" weasel-wording actually covers, the dangerous SLC-to-TLC folding window, and how to test PLP claims with a relay rig instead of trusting the datasheet.
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Klipper vs Marlin: Why Serious 3D Printing Moved to the Raspberry Pi Why serious 3D printing moved from Marlin to Klipper — offloading motion planning to a Raspberry Pi, what input shaping and pressure advance actually buy you, and the real tradeoffs of each firmware approach.
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BIOS/UEFI Deep Dive: Boot Phases, Secure Boot, Measured Boot, and TPM What's really happening before your OS loads — UEFI boot phases, Secure Boot, Measured Boot, and the TPM — explained well enough to debug boot failures, sign your own kernel modules, and understand the modern firmware attack surface.