# BTT MINI12864 V2.0 chrashes Klipper

**URL:** <https://klipper.discourse.group/t/btt-mini12864-v2-0-chrashes-klipper/13116>\
**Category:** General Discussion\
**Created:** [January 13, 2024, 5:32pm UTC](https://klipper.discourse.group/t/btt-mini12864-v2-0-chrashes-klipper/13116 "2024-01-13T17:32:42Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Tailor84](https://avatars.discourse-cdn.com/v4/letter/t/ebca7d/32.png) [@Tailor84](https://klipper.discourse.group/u/Tailor84)\
**Post date:** [January 13, 2024, 5:32pm UTC](https://klipper.discourse.group/t/btt-mini12864-v2-0-chrashes-klipper/13116/1 "2024-01-13T17:32:42Z")

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### Basic Information:

Printer Model: Anycubic Chiron (mostly Stock)  
 MCU / Printerboard: Trigorilla 0.0.2  
 `klippy.log`  
[klippy (2).zip](https://klipper.discourse.group/uploads/short-url/7WA1zXu3AGHeA5ZkiqDCUDOYVfy.zip) (1.4 MB)

_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:

My problem is as follows,

I have bought the BTT MINILCD V2.0 for my printer and would like to put it into operation.

Unfortunately, I always get an error message when I restart the firmware. I have attached a picture of the error message.

 ![Fehlermeldung](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/6/6709144d77d85ca8ebcecd944414f62b365d04ff.png)

Here is an excerpt from my Printer.cfg

```auto
[board_pins]
mcu: mcu
aliases:
  # Common EXP1 header found on many "all-in-one" ramps clones
  EXP1_1=PC0, EXP1_3=PH0, EXP1_5=PA1, EXP1_7=PA5, EXP1_9=<GND>,
  EXP1_2=PC2, EXP1_4=PH1, EXP1_6=PA3, EXP1_8=PA7, EXP1_10=<5V>,
  # EXP2 header
  EXP2_1=PB3, EXP2_3=PC6, EXP2_5=PC4, EXP2_7=PL0, EXP2_9=<GND>,
  EXP2_2=PB1, EXP2_4=PB0, EXP2_6=PB2, EXP2_8=PG0, EXP2_10=<RST>

######################################################################
# BigTreeTech mini12864 (with neopixel backlight leds)
######################################################################
[display]
lcd_type: uc1701
cs_pin: EXP1_3
a0_pin: EXP1_4
rst_pin: EXP1_5
contrast: 63
encoder_pins: ^EXP2_5, ^EXP2_3
click_pin: ^!EXP1_2
## Some micro-controller boards may require an spi bus to be specified:
#spi_bus: spi
## Alternatively, some micro-controller boards may work with software spi:
#spi_software_miso_pin: EXP2_1
#spi_software_mosi_pin: EXP2_6
#spi_software_sclk_pin: EXP2_2
[output_pin beeper]
pin: EXP1_1

[neopixel btt_mini12864]
pin: EXP1_6
chain_count: 3
color_order: RGB
initial_RED: 0.05
initial_GREEN: 0.05
initial_BLUE: 0.05

```

If I comment out the lines under [display] the printer works again and the lines with Neopixels work perfectly and I can change the colors as I like.  
I hope it’s a simple error and I’m just blind and don’t see it

---

<div class="post-metadata">

**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\
**Post date:** [January 13, 2024, 7:07pm UTC](https://klipper.discourse.group/t/btt-mini12864-v2-0-chrashes-klipper/13116/2 "2024-01-13T19:07:00Z")

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You are running an unofficial Klipper version on your board and in combination with the Klipper running on the host (which looks suspicious as well), it is creating strange errors.

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<div class="post-metadata">

**Author:** ![Tailor84](https://avatars.discourse-cdn.com/v4/letter/t/ebca7d/32.png) [@Tailor84](https://klipper.discourse.group/u/Tailor84)\
**Post date:** [January 13, 2024, 7:35pm UTC](https://klipper.discourse.group/t/btt-mini12864-v2-0-chrashes-klipper/13116/3 "2024-01-13T19:35:06Z")

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Thanks for the quick answer.

Hmm ok I try to do a fresh reinstall on the MCU.

Please don’t throw stones at me but my host is the Sonic Pad, I thought last year that would be the solution to all my problems but it’s rather different, I’ll probably have to get a Pi soon 🙂

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\
**Post date:** [March 13, 2024, 7:35pm UTC](https://klipper.discourse.group/t/btt-mini12864-v2-0-chrashes-klipper/13116/4 "2024-03-13T19:35:07Z")

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