I’d like to switch over from the stock Creality firmware to klipper. As I’m already using Octoprint on my Pi4-8gb I’ll be using octoklipper. I self host spaghetti detective so I have to use octoprint regardless.
I have a few questions to make sure I won’t cause irreparable damage when I first start up the printer.
Printer is an Ender 3 max with a 4.2.2 board, and the 522K STM32F103 RET6 CPU.
Q1: My CR-Touch is already hooked up and I know my z-offset. I’ll be measuring the X and Y offsets via a manual measurement. The concern I have is if I dont have the code correct my printhead will smash into the build plate when I turn on my printer and try to Home it. As well, how do I verify the pins mentioned in the example below to that of my board?
[bltouch] sensor_pin: ^PB1 control_pin: PB0 x_offset: -42 y_offset: -10 z_offset: 0 [safe_z_home] home_xy_position: 150,150 # Change coordinates to the center of your print bed z_hop: 10 # Move up 10mm z_hop_speed: 5
I know the ^ means pullup resistor, but below there is a ^! and I dont know what the ! means.
Q2: The screen. I have a 12864 LCD screen and would like to use it. After a lot of searching I was able to find a post somewhere that said the following:
Try using the klipper code below. I'm pretty sure it's for the Max. [display] lcd_type: st7920 cs_pin: EXP1_7 sclk_pin: EXP1_6 sid_pin: EXP1_8 encoder_pins: ^EXP1_5, ^EXP1_3 click_pin: ^!EXP1_2 [output_pin beeper] pin: EXP1_1 Make sure you have an aliases section in your config to alias the EXP port
I’m used to alias usage from Bash alias’. I’m just unclear as to how to make it work for klipper configs.
I found a marlin page for the STM32F1 boards but I’m not sure if its the right board as it states v4.h. I found This pic where it shows some pinouts for the display on the board but I’ve no idea where to put them in the config.
Any assistance would be appreciated. Thank you