The Absolute Cheapest Way to Run Klipper on an Ender 3 Under $30

Can you really run Klipper on an Ender 3 for under $30? I set out to build a 'sleeper' Klipper system—no external wires, no bulky computers—just a Raspberry Pi Zero 2W and some clever wiring. In this video, I walk through the exact parts I used, the $4 buck converter that made it possible, and how I (mostly) hit my budget goal. I walk through: Choosing the Pi and SD card Wiring the buck converter safely Installing Pi OS Light and setting up SSH Installing Klipper with KIAUH Calibrating your printer (PID tuning, rotational distance, bed leveling, and nozzle height) This build is sleek, self-contained, and surprisingly easy for anyone comfortable with basic electronics. No external wires, no additional boxes — just a fully functional sleeper Klipper setup inside your Ender 3. Parts & resources mentioned (Affiliate Links): Raspberry Pi Zero 2 W: https://amzn.to/3OAEVy4 Buck converter: https://amzn.to/4cFtv6b Inline Fuse: https://amzn.to/4tNWcUF KIAUH GitHub page: GitHub - dw-0/kiauh: Klipper Installation And Update Helper Official Klipper documentation: Overview - Klipper documentation 3D Prints: Drawer: https://www.printables.com/model/3476... V Slot Covers: https://www.printables.com/model/3150... Other Affiliate Links: BTT Eddy https://tidd.ly/4sn7az9 Disclaimer: Modifying your printer’s internal power wiring can be dangerous. Only attempt if you are confident with DC electronics. You are responsible for your own hardware. If you enjoyed this build, check out my other Klipper videos: Eddy vs BL Touch    • BTT Eddy vs BLTouch — Is It Actually Better?   Installing Klipper for the First Time    • Was the Klipper Upgrade to my Ender3 Worth...