Latest Build breaks MMU can on Happy

General Discussion
1

Basic Information:

Printer Model: voron 2.4
MCU / Printerboard: mcu (stm32f446xx)

Version: v0.12.0-25-g99d7af87-dirty

Load: 0.06, Awake: 0.00, Freq: 180 MHz, Temp: 26°C

6

mcu EBBCan (stm32g0b1xx)

Version: v0.12.0-25-g99d7af87

Load: 0.02, Awake: 0.00, Freq: 64 MHz, Temp: 69°C

2

mcu mmu (stm32g0b1xx)

Version: v0.12.0-25-g99d7af87

Load: 0.02, Awake: 0.00, Freq: 64 MHz,

2

mcu rpi (linux)

Version: v0.12.0-25-g99d7af87

Load: 0.02, Awake: 0.00, Freq: 50 MHz,

2

Host (aarch64, 64bit)

Version: v0.12.0-19-g5bd32e29-dirty

OS: Debian GNU/Linux 11 (bullseye)

Distro: MainsailOS 1.2.1 (bullseye)

Load: 0.13, Mem: 417.7 MB / 827.0 MB, Temp: 35°C

eth0 (192.168.1.19) : Bandwidth: 4.8 kB/s , Received: 167.8 MB , Transmitted: 22.2 MB

can0 : Bandwidth: 0.6 kB/s , Received: 1.3 MB ,
klippy.log
klippy (2).log (6.5 MB)
config-20231207-223955.zip (24.5 KB)

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
Be sure to check our “Knowledge Base” Category first. Most relevant items, e.g. error messages, are covered there

Describe your issue:

I updated and got a weird error included in the image. Thought it was because klipper was on mismatched version, updated everything to same version. Still didn’t work. Would boot if i uncommented the happy hare stuff. I used git reset --hard 5bd32e2984b5d34ab54267aed3f078bd990d33b5 and everything started working all happy again :slight_smile:
image (1)

…

2

I just pushed a fix for this… Just update Happy Hare and all is good again.

JFYI: Some changes were made in the Klipper toolhead init which I extend to control the MMU as a “second toolhead”. This could happen occasionally but if/when it does let me know and I can update…

So this isn’t a Klipper issue … it is a Happy Hare dependency issue.

Happy Hare upgrade info:
If running version v2.2 or higher, a simple moonraker update and klipper restart is enough.
If running v2.0 - v2.1, you will also need to re-run:

cd Happy-Hare
./install.sh

If running the much older “ERCF-Software-v3” code, then consult instruction in the README - you have more to do.

1 Like
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