03:03 (mm:ss) - The fastest 3D Benchy on THE 100 printer - youtube / github / hackaday.io / printables / discord / klipper-config

*THE 100 - The World’s Fastest 3D Printer * - 300$

• Speed edition - 500$
  • faster motor
  • better road / bearing
  • hotend / toolend
  • steel flexplate
  • titanium screw (lighter 17g saved)
  • meanwell power supply

Project

Convert remain of dagoma to a 100 clone.

Stepper Motor

• X/Y - Casun 42SHD0217-24B / info - (from DiscoEasy)
  • Rated Current: 1.5A
  • Rated Voltage: 3.3V
  • Holding Torque: 500mN.m / Detent Torque: 0,015 Nm
  • Steps per revolution: 200 / Step Angle 1.8°
  • Amount of Phases: 2 / Phase Resistance: 2.2 Ω / Phase inductivity: 5 mH
• Z ? - (from DiscoEasy)
• Extrudeur (from Ender 3)

Building

Assembly guide

• Crosslink’s THE100 v1.1 3D Printer build guide - reader friendly

Original params / alternative - 0.4 or 0.6 nozzle (0.6 will be slightly faster, but you can use either)

For all STL Parts exept the print bed i’ve used the following settings:

• 0.25 Layer height
• 0.5 Line width - probably assume a 0.4 nozzle.
• 3 Top layers
• 3 Bottom layers
• 3 Walls
• 25% Infill
• Grid Infill Pattern

For the print bed:

• 30% Infill

• Part 1: Toolhead

Motherboard

BananaPi M2 Zero

OS

• so far only Armbian_21.08.1_Bananapim2zero_bullseye_current_5.10.60.img.xz worked
• using pi-imager helps
• connect directly to computer (no intermediate hub) using USB OTG
• making sure that usb-cable have data lines
• on my computer tty was /dev/ttyACM0
  • connect with screen /dev/ttyACM0 115200 - initial login root/1234
• led will light when powered on - then disapears while booting
  • will blink when system is ready
  • will be still when crashed

When everything works, the device is visible with lsusb (boot is quite fast, less than 20s)

$ lsusb
Bus 001 Device 031: ID 0525:a4a7 Netchip Technology, Inc. Linux-USB Serial Gadget (CDC ACM mode)

Use same GPIO layout as pi - and can be powered through GPIO 5V

Misc

• Setting onboard LEDs with rc.local or systemd
  • Armbian: Get Your LEDs Under Control!

Klipper install

Runs fine through KIAUH. But I wasn’t able to install numpy properly (mandatory for input-shaper).

SKR Pico

github

• Sensorless homing function
• Communication via UART - for pi connection

Notes

It is common for chinese socket to be inverted (happens me at least 2 times)

• on fan socket (but fan only work if current flow in right direction)
• on contact socket (dagoma disco-easy).

So when a fan / or other system does not work behave properly, you may check that…