Basic Information: Printer Model: Voron 0.2 MCU / Printerboard: BTT SKR Pico Host / SBC: BTT Pi klippy.log klippy (4).log (286.7 KB) I have installed a klippyexpander board and can not get it to work. If I have this in klipperEpander.cfg: [mcu expander] serial:/dev/serial/by-id/usb-Klipp…

$ make menuconfig --- [*] Enable extra low-level configuration options Micro-controller Architecture (STMicroelectronics STM32) ---> Processor model (STM32F042) ---> Bootloader offset (8KiB bootloader) ---> Clock Reference (25 MHz crystal) ---> Communication interface (USB (o…

[image] nefelim4ag: $ make menuconfig --- [*] Enable extra low-level configuration options Micro-controller Architecture (STMicroelectronics STM32) ---> Processor model (STM32F042) ---> Bootloader offset (8KiB bootloader) ---> Clock Reference (25 MHz crystal) ---> Communi…

[image] mykepredko: ??? Why would you suggest this? Well, because: [image] mullemeck: mcu ‘expander’: Unknown command: neopixel_update MCU 'expander' config: BUS_PINS_spi1=PA6,PA7,PA5 BUS_PINS_spi1a=PB4,PB5,PB3 BUS_PINS_spi2=PB14,PB15,PB13 BUS_PINS_spi2a=PC2,PC3,PB10 CLOCK_FREQ=480000…

[image] nefelim4ag: So, it is expander, it is stm32f042. Sorry, missed that - but, from the OP, it looks like the expander neopixel statement is still commented out and I don’t see it in the klippy.log. AND, Klipper is “dirty”.

[image] mykepredko: it looks like the expander neopixel statement is still commented out and I don’t see it in the klippy.log. Log contains several start attempts, one of which includes it and shows the error: [neopixel expanderPixel] pin = expander:PB1 chain_count = 2 initial_red = 0.9 ini…

[image] nefelim4ag: So, from my humble point of view, it is the MCU config issue. In my (admittedly limited) experience when building the Klipper Firmware image for a limited Flash device you will get an error if there isn’t enough space in the selected device for the built Flash. Now, I jus…

Thank you for your coments. I have been out of town so hav not been able to test your suggestions untill today. Since my latest atempts there has been some updates for klipper, but stupid as I am i did not dokument what they were about, I just applied them. And after I had read all of your commen…

Klipper not working with neopixel in config

General Discussion

Sineos June 29, 2025, 7:29am 9

You may find a bit of documentation here: Region ROM Overflowed / Region Text Overflowed

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Klipper not working with neopixel in config

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