What is it?

A very small 3D printer controller board for use on a direct drive toolhead. It is designed to be used with Klipper firmware.

Features

• CAN 2.0b bus or USB for host communication
• One TMC2209 stepper driver for the extruder
• STM32F103 72Mhz MCU
• Support for 2 fans, max 1A each
• One big MOSFET for the hotend heater
• Thermistor input
• Support for an endstop (or filament runout sensor)

Update Feb 18, 2022

A newer version, 0.61, has been designed and produced. It is manufactured and sold by Luke's Laboratory. https://lukeslabonline.com/products/huvud

Update May 11, 2021

The current chip crisis is causing major component sourcing problems, and driving costs to insane level. We could manufacture more boards, but the end price would be close to $50. We'll have to wait and see how things evolve

Update April 23, 2021

We are out of stock of boards ready for shipping. I have a pile of boards that failed testing for various reason, quite a few of those are most likely easy to fix and should be up for sale shortly. The chip crisis has prevented me from producing any more boards. If someone have a couple of hundred STM32F0x2's or F103s laying around please contact me.