Tube Cube: Portable CoreXY printer with NEMA14, Bluetooth, etc

myminifactory

Tube Cube Portable CoreXY Printer with NEMA14, Bluetooth, and More # Summary Update February 23, 2019 I've added a few STL files for those who want to build this printer using 8mm linear rods. Please note that these files are untested. I highly recommend using T16 pulleys throughout the design for increased torque and finer resolution. ------------------------- Update February 18, 2019 This printer is amazing, especially considering it's a rat parts printer. The prints are top-notch, and I'm impressed by its capabilities. While I still love my HEVO printers, this one can handle most of the parts I print regularly. If you're interested in building a similar printer, be sure to check out my notes below. ------------------------- Printing Notes The X Carriage features printing supports that are part of the design. Simply cut them out gently after printing. Note that the supports point upwards when printed, so flip it over before cutting. The Y Carriages were printed standing up with no supports. Firmware I started with Teacup but had issues and switched to Octopi and Klipper on a RPI Zero W. This combo works decently well for a $10 RPI and a $6 Nano with shield, although it's not the best combination. Adding Bluetooth PAN Run the following commands: sudo apt-get install bluez-tools Create the following files: /etc/systemd/network/pan0.netdev [NetDev] Name=pan0 Kind=bridge /etc/systemd/network/pan0.network [Match] Name=pan0 [Network] Address=172.20.1.1/24 DHCPServer=yes /etc/systemd/system/bt-agent.service [Unit] Description=Bluetooth Auth Agent [Service] ExecStart=/usr/bin/bt-agent -c NoInputNoOutput Type=simple [Install] WantedBy=multi-user.target /etc/systemd/system/bt-network.service [Unit] Description=Bluetooth NEP PAN After=pan0.network [Service] ExecStart=/usr/bin/bt-network -s nap pan0 Type=simple [Install] WantedBy=multi-user.target Then run: sudo systemctl enable systemd-network sudo systemctl enable bt-agent sudo systemctl enable bt-network sudo systemctl start systemd-network sudo systemctl start bt-agent sudo systemctl start bt-network Finally, to pair, run: sudo bt-adapter --set Discoverable 1 Klipper Printer Config DO NOT COPY THIS FILE WITHOUT CAREFULLY READING AND UPDATING IT FIRST. Incorrectly configured parameters may cause damage. [stepper_x] step_pin: ar5 dir_pin: ar2 enable_pin: !ar8 step_distance: .00625 endstop_pin: ^ar9 position_endstop: 0 position_max: 130 homing_retract_dist: 5.0 [stepper_y] step_pin: ar6 dir_pin: ar3 enable_pin: !ar8 step_distance: .00625 endstop_pin: ^ar10 position_endstop: 0 position_max: 170 homing_retract_dist: 5.0 [stepper_z] step_pin: ar7 dir_pin: !ar4 enable_pin: !ar8 step_distance: .001736 endstop_pin: ^ar11 position_endstop: 100.2 position_max: 100.2 homing_retract_dist: 5.0 [extruder] step_pin: ar13 dir_pin: ar12 enable_pin: !ar8 step_distance: .010526 nozzle_diameter: 0.400 filament_diameter: 1.750 heater_pin: analog2 sensor_type: NTC 100K beta 3950 sensor_pin: analog6 control: pid pid_Kp: 26.322 pid_Ki: 1.300 pid_Kd: 133.253 min_temp: 0 max_temp: 250 [fan] pin: analog1 [mcu] serial: /dev/ttyUSB0 pin_map: arduino [printer] kinematics: corexy max_velocity: 150 max_accel: 200 max_accel_to_decel: 50 max_z_velocity: 25 max_z_accel: 30