Learn how to implement input shaping in Marlin firmware for faster 3D printing speeds and reduced ringing effects. Follow a step-by-step guide covering setup and calibration on an Ender 3 printer. Explore the concept of input shaping, migrate to Marlin 2.1, perform baseline testing, make necessary firmware changes, and conduct calibration prints. Master the process of measuring, calculating, and storing input shaping values. Compare results and understand limitations and future parameters. Gain insights into improving print quality while increasing speed and acceleration in 3D printing.