A solution to run Klipper with the printer connected to a Wi-Fi router, while the host may be in a different place at all. Code files contain comments for you to understand the installation process.
On Keenetic router you must have Entware installed and have these packages installed:
opkg install usbip2 usbip2-client usbip2-server
On host you must have usbip tools installed.
| #!/bin/sh | |
| # Linux hotplug triggered script. | |
| # | |
| # Put this into /opt/bin/hotplug_trigger on router | |
| # Dont't forget to do chmod +x | |
| ############### | |
| # Settings | |
| VENDORID="1d50" | |
| DEVICEID="614e" | |
| ############### | |
| PATH="/opt/bin:/opt/sbin:/opt/usr/bin:/opt/usr/sbin:/bin:/sbin:/usr/bin:/usr/sbin" | |
| USBIP="/opt/sbin/usbip" | |
| case "$PRODUCT" in | |
| "$VENDORID/$DEVICEID"*) | |
| if [ "$ACTION" = "add" ]; then | |
| sleep 1 | |
| BUSID=`usbip list -p -l | grep "$VENDORID:$DEVICEID" | cut -d '#' -f 1 | cut -d '=' -f 2 | xargs` | |
| echo "BUSID=$BUSID" >>/tmp/hotplug_bind.log | |
| "$USBIP" bind -b "$BUSID" >>/tmp/hotplug_bind.log 2>&1 | |
| fi | |
| ;; | |
| esac | |
| TS=`date "+%s"` | |
| { | |
| echo "INTERFACE=$1"; | |
| echo "ACTION=$ACTION"; | |
| echo "PRODUCT=$PRODUCT"; | |
| echo "DATE=$TS"; | |
| } >/tmp/last_hotplug.log |
| # Modified Klipper systemd service with USB/IP connection before Klipper start. | |
| # Klipper user - klipper | |
| [Unit] | |
| Description=Klipper 3D Printer Firmware SV1 | |
| Documentation=https://www.klipper3d.org/ | |
| After=network-online.target usbip-setup.service | |
| Wants=udev.target | |
| [Install] | |
| WantedBy=multi-user.target | |
| [Service] | |
| Type=simple | |
| User=klipper | |
| RemainAfterExit=yes | |
| WorkingDirectory=/var/lib/klipper/klipper | |
| EnvironmentFile=/var/lib/klipper/printer_data/systemd/klipper.env | |
| ExecStart=/var/lib/klipper/klippy-env/bin/python $KLIPPER_ARGS | |
| Restart=always | |
| RestartSec=10 |
| #!/bin/sh | |
| # Service for hosting USB/IP server on Keenetic router with Entware. | |
| # We've used Keenetic Extra. | |
| # | |
| # Put this into /opt/etc/init.d/S75usbipdevice on router | |
| # Dont't forget to do chmod +x | |
| # Make sure there's no S74usbipd init.d script. | |
| ############### | |
| # Settings | |
| VENDORID="1d50" | |
| DEVICEID="614e" | |
| ############### | |
| PATH="/opt/bin:/opt/sbin:/opt/usr/bin:/opt/usr/sbin:/bin:/sbin:/usr/bin:/usr/sbin" | |
| usbipd -D & | |
| insmod /lib/modules/4.9-ndm-5/usbip-core.ko | |
| insmod /lib/modules/4.9-ndm-5/usbip-host.ko | |
| echo "/opt/bin/hotplug_trigger" > /proc/sys/kernel/hotplug | |
| BUSID=`usbip list -p -l | grep "$VENDORID:$DEVICEID" | cut -d '#' -f 1 | cut -d '=' -f 2 | xargs` | |
| [ ! -z "$BUSID" ] && usbip bind -b "$BUSID" |
| #!/bin/bash | |
| # Script to connect to a USB device via USB/IP. | |
| # Don't forget to do chmod +x and fill in "HOST" variable | |
| # | |
| # Put this into /usr/bin/usbip-setup on host | |
| ############### | |
| # Settings | |
| HOST="X.X.X.X" | |
| VENDORID="1d50" | |
| DEVICEID="614e" | |
| ############### | |
| USBID="$VENDORID:$DEVICEID" | |
| while ! `nc -z "$HOST" 3240`; do | |
| echo "Waiting for USB/IP..." | |
| sleep 1 | |
| done | |
| bus_id() { | |
| usbip list -r "$HOST" -p | grep "$USBID" | cut -d ':' -f 1 | xargs | |
| } | |
| is_connected() { | |
| lsusb -d "$USBID" >/dev/null && return 0 | |
| BUSID=`bus_id` | |
| [ -z "$BUSID" ] && return 1 | |
| usbip attach -r "$HOST" -b "$BUSID" && return 0 | |
| return 1 | |
| } | |
| while ! `is_connected`; do | |
| echo "Retrying..." | |
| sleep 1 | |
| done | |
| echo "USB device has been connected" |
| # USB/IP service for Klipper | |
| [Unit] | |
| Description=USB/IP setup | |
| After=network-online.target | |
| Wants=udev.target | |
| [Install] | |
| WantedBy=multi-user.target | |
| [Service] | |
| Type=oneshot | |
| ExecStart=/usr/bin/usbip-setup |
| # | |
| # Klipper USB/IP integration module. | |
| # Author: Roman Rikhter <tdrkDev> | |
| # | |
| # Uses ~/usbip.sh script where you may specify the script to connect | |
| # the MCU. | |
| # | |
| # 1) Put this script into ~/klipper/klippy/extras/usbip.py on host | |
| # 2) Define [usbip] section in your printer.cfg | |
| # | |
| import os | |
| import time | |
| class UsbIpSupport: | |
| def __init__(self, config): | |
| self.printer = config.get_printer() | |
| self.gcode = self.printer.lookup_object("gcode") | |
| self.printer.register_event_handler( | |
| "klippy:disconnect", self._handle_disconnect) | |
| self.serial = config.getsection("mcu").get("serial") | |
| self.reconnecting = False | |
| if not self._exists(): | |
| self._handle_connect() | |
| def _exists(self): | |
| return os.access(self.serial, os.R_OK | os.W_OK) | |
| def _connect(self): | |
| if self._exists(): return | |
| self.reconnecting = True | |
| self._log("USB/IP: Connecting...") | |
| os.system(os.environ.get("HOME") + "/usbip.sh") | |
| self._log("USB/IP: Connected") | |
| self.reconnecting = False | |
| def _handle_disconnect(self): | |
| if self.reconnecting: return | |
| self._log("USB/IP: Reconnection due to a disconnect event") | |
| time.sleep(0.25) | |
| self._connect() | |
| def _handle_connect(self): | |
| if self.reconnecting: return | |
| self._log("USB/IP: Initial connection") | |
| self._connect() | |
| def _log(self, msg): | |
| self.gcode.respond_info(msg) | |
| def load_config(config): | |
| return UsbIpSupport(config) |
| #!/bin/bash | |
| # Use common with systemd service script. Requires you | |
| # to allow klipper user to run "usbip-setup" without sudo password. | |
| # | |
| # Add this to sudoers: | |
| # klipper ALL = NOPASSWD: /usr/bin/usbip-setup,/usr/bin/usbip | |
| # | |
| # Where "klipper" is your klipper user. | |
| # | |
| # Put this into ~/usbip.sh on host | |
| # Don't forget to do chmod +x | |
| sudo usbip-setup |