HUVUD Notes:

Purchasing:

1. https://lukeslabonline.com/products/huvud

Resources

1. Klipper: https://www.klipper3d.org/CANBUS.html

Installation:

1. https://www.notion.so/Instructions-Getting-a-Huvud-Toolhead-Working-with-Klipper-611ebb87efba4e22ae3b0641e5267ab3#35159f58eeff4fb6b1e08e27784550a6 <<<<<<< HEAD
2. YouTube Guide by Eddie the Engineer: https://www.youtube.com/watch?v=XkcxSQhRR3I

References

1. https://www.klipper3d.org/CANBUS.html?h=canbus
2. https://www.waveshare.com/wiki/RS485_CAN_HAT
3. https://github.com/bondus/KlipperToolboard

Steps

Prepare the RPi / Waveshare Board:

1. sudo nano /etc/network/interfaces.d/can0 (Creates the file)

   Paste the following: auto can0 iface can0 can static bitrate 500000 <<<<< This value must match the value in make menuconfig up ifconfig $IFACE txqueuelen 128

   Note: bitrade must match klipper value in make menuconfig

2. sudo nano /boot/config.txt

   paste the following below [all]: dtoverlay=mcp2515-can0,oscillator=12000000,interrupt=25,spimaxfrequency=2000000

3. Reboot the RPi sudo reboot

4. Check the CAN interface ip addr list

   This should return something like the following. Look for "UP" can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UP group default qlen 128 link/can

5. Update klipper to the latest version

Flash the Huvud:

1. cd klipper

2. make menuconfig

   [*] Enable extra low-level configuration options Micro-controller Architecture (STMicroelectronics STM32) ---> Processor model (STM32F103) ---> [ ] Only 10KiB of RAM (for rare stm32f103x6 variant) [ ] Disable SWD at startup (for GigaDevice stm32f103 clones) Bootloader offset (2KiB bootloader (HID Bootloader)) ---> Clock Reference (8 MHz crystal) ---> Communication interface (CAN bus (on PB8/PB9)) ---> (500000) CAN bus speed () GPIO pins to set at micro-controller startup

3. make clean

4. make

5. Connect boot pin

6. Attach USB cable to Huvud from RPi

7. Power Huvud (Huvud light should be flashing)

8. make flash FLASH_DEVICE=1209:beba

9. Shutdown everything

10. Remove pin

11. Detach USB cable to Huvud from RPi

12. Power Huvud (Huvud light should be steady)

13. Connect "H" and "L" wires to Huvud - Waveshare

14. Power on everything

15. ~/klippy-env/bin/python ~/klipper/scripts/canbus_query.py can0

======= 2. YouTube Guide by Eddie the Engineer: https://www.youtube.com/watch?v=XkcxSQhRR3I

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