config: Add printer config for the CR-20 by Creality3D

Signed-off-by: Uri Shaked <uri@urishaked.com>

config/printer-creality-cr20-2018.cfg

@@ -0,0 +1,81 @@
+# This file contains pin mappings for the Creality CR-20. To use
+# this config, the firmware should be compiled for the AVR atmega2560.
+
+# See the example.cfg file for a description of available parameters.
+
+[stepper_x]
+step_pin: PF0
+dir_pin: PF1
+enable_pin: !PD7
+step_distance: .0125
+endstop_pin: ^PE5
+position_endstop: 0
+position_max: 235
+homing_speed: 50
+
+[stepper_y]
+step_pin: PF6
+dir_pin: PF7
+enable_pin: !PF2
+step_distance: .0125
+endstop_pin: ^PJ1
+position_endstop: 0
+position_max: 235
+homing_speed: 50
+
+[stepper_z]
+step_pin: PL3
+dir_pin: !PL1
+enable_pin: !PK0
+step_distance: .0025
+endstop_pin: ^PD3
+position_endstop: 0.5
+position_max: 250
+
+[extruder]
+step_pin: PA4
+dir_pin: PA6
+enable_pin: !PA2
+step_distance: .010526
+nozzle_diameter: 0.400
+filament_diameter: 1.750
+heater_pin: PB4
+sensor_type: EPCOS 100K B57560G104F
+sensor_pin: PK5
+control: pid
+pid_Kp: 22.2
+pid_Ki: 1.08
+pid_Kd: 114
+min_temp: 0
+max_temp: 250
+
+[heater_bed]
+heater_pin: PH5
+sensor_type: EPCOS 100K B57560G104F
+sensor_pin: PK6
+control: pid
+pid_Kp: 690.34
+pid_Ki: 111.47
+pid_Kd: 1068.83
+min_temp: 0
+max_temp: 130
+
+[fan]
+pin: PH6
+
+[mcu]
+serial: /dev/ttyUSB0
+
+[printer]
+kinematics: cartesian
+max_velocity: 300
+max_accel: 3000
+max_z_velocity: 5
+max_z_accel: 100
+
+[display]
+lcd_type: uc1701
+cs_pin: PA3
+a0_pin: PA5
+encoder_pins: ^PC4, ^PC6
+click_pin: ^PC2