Sunhokey compact carriage for opto autobed leveling E3D V6

thingiverse

Inspired by http://www.thingiverse.com/thing:742947 and http://www.thingiverse.com/thing:714939. This system offers high accuracy and is effortless to calibrate. The printer settings used were layer height of 0.2 mm with no supports at all. After printing, carefully clean the pieces to ensure optimal performance from the fan duct. To achieve this, apply an ABS slurry over its surface. A 40 mm M4 screw is necessary for locking the extruder (see http://www.thingiverse.com/thing:742947). The Firmware modification involves editing Configuration.h: const bool Z_MIN_ENDSTOP_INVERTING = false; #define DISABLE_MAX_ENDSTOPS #define INVERT_X_DIR false as you will need to mount the X belt in a reverse way to increase the available Z mm. #define min_software_endstops false #define ENABLE_AUTO_BED_LEVELING #ifdef AUTO_BED_LEVELING_GRID These values worked for me but can be adjusted according to preference: #define LEFT_PROBE_BED_POSITION 10 #define RIGHT_PROBE_BED_POSITION 175 #define FRONT_PROBE_BED_POSITION 25 #define BACK_PROBE_BED_POSITION 190 #define MIN_PROBE_EDGE 10 #define AUTO_BED_LEVELING_GRID_POINTS 2 or 3, however, I prefer 2 for my printer. #define X_PROBE_OFFSET_FROM_EXTRUDER 7 #define Y_PROBE_OFFSET_FROM_EXTRUDER 24 #define Z_PROBE_OFFSET_FROM_EXTRUDER -1.60! This is an essential setting. Due to differences between each printer model, a video explaining the concept (at 5:00) may help determine your value. #define Z_RAISE_BEFORE_HOMING 10 #define Z_RAISE_BEFORE_PROBING 10 #define Z_RAISE_BETWEEN_PROBINGS 10 #define PROBE_SERVO_DEACTIVATION_DELAY 300 //#define CUSTOM_M_CODES #define NUM_SERVOS 1 #define SERVO_ENDSTOPS {-1, -1, 0} #define SERVO_ENDSTOP_ANGLES {0,0, 0,0, 20,0} After entering these values, type the command 'M401', then set up your servo-arm just as shown in the picture. Printer Specifications Sunhokey Prusa i3 (late 2014) model was used for printing.