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diff --git a/docs/FAQ.md b/docs/FAQ.md index 56abe1a5..f02ef1ce 100644 --- a/docs/FAQ.md +++ b/docs/FAQ.md @@ -8,17 +8,18 @@ Frequently asked questions 5. [The "make flash" command doesn't work](#the-make-flash-command-doesnt-work) 6. [How do I change the serial baud rate?](#how-do-i-change-the-serial-baud-rate) 7. [Can I run Klipper on something other than a Raspberry Pi 3?](#can-i-run-klipper-on-something-other-than-a-raspberry-pi-3) -8. [Why can't I move the stepper before homing the printer?](#why-cant-i-move-the-stepper-before-homing-the-printer) -9. [Why is the Z position_endstop set to 0.5 in the default configs?](#why-is-the-z-position_endstop-set-to-05-in-the-default-configs) -10. [I converted my config from Marlin and the X/Y axes work fine, but I just get a screeching noise when homing the Z axis](#i-converted-my-config-from-marlin-and-the-xy-axes-work-fine-but-i-just-get-a-screeching-noise-when-homing-the-z-axis) -11. [My TMC motor driver turns off in the middle of a print](#my-tmc-motor-driver-turns-off-in-the-middle-of-a-print) -12. [I keep getting random "Lost communication with MCU" errors](#i-keep-getting-random-lost-communication-with-mcu-errors) -13. [My Raspberry Pi keeps rebooting during prints](#my-raspberry-pi-keeps-rebooting-during-prints) -14. [When I set "restart_method=command" my AVR device just hangs on a restart](#when-i-set-restart_methodcommand-my-avr-device-just-hangs-on-a-restart) -15. [Will the heaters be left on if the Raspberry Pi crashes?](#will-the-heaters-be-left-on-if-the-raspberry-pi-crashes) -16. [How do I convert a Marlin pin number to a Klipper pin name?](#how-do-i-convert-a-marlin-pin-number-to-a-klipper-pin-name) -17. [How do I cancel an M109/M190 "wait for temperature" request?](#how-do-i-cancel-an-m109m190-wait-for-temperature-request) -18. [How do I upgrade to the latest software?](#how-do-i-upgrade-to-the-latest-software) +8. [Can I run multiple instances of Klipper on the same host machine?](#can-i-run-multiple-instances-of-klipper-on-the-same-host-machine) +9. [Why can't I move the stepper before homing the printer?](#why-cant-i-move-the-stepper-before-homing-the-printer) +10. [Why is the Z position_endstop set to 0.5 in the default configs?](#why-is-the-z-position_endstop-set-to-05-in-the-default-configs) +11. [I converted my config from Marlin and the X/Y axes work fine, but I just get a screeching noise when homing the Z axis](#i-converted-my-config-from-marlin-and-the-xy-axes-work-fine-but-i-just-get-a-screeching-noise-when-homing-the-z-axis) +12. [My TMC motor driver turns off in the middle of a print](#my-tmc-motor-driver-turns-off-in-the-middle-of-a-print) +13. [I keep getting random "Lost communication with MCU" errors](#i-keep-getting-random-lost-communication-with-mcu-errors) +14. [My Raspberry Pi keeps rebooting during prints](#my-raspberry-pi-keeps-rebooting-during-prints) +15. [When I set "restart_method=command" my AVR device just hangs on a restart](#when-i-set-restart_methodcommand-my-avr-device-just-hangs-on-a-restart) +16. [Will the heaters be left on if the Raspberry Pi crashes?](#will-the-heaters-be-left-on-if-the-raspberry-pi-crashes) +17. [How do I convert a Marlin pin number to a Klipper pin name?](#how-do-i-convert-a-marlin-pin-number-to-a-klipper-pin-name) +18. [How do I cancel an M109/M190 "wait for temperature" request?](#how-do-i-cancel-an-m109m190-wait-for-temperature-request) +19. [How do I upgrade to the latest software?](#how-do-i-upgrade-to-the-latest-software) ### How can I donate to the project? @@ -148,6 +149,23 @@ for that particular machine. See the [install-octopi.sh](../scripts/install-octopi.sh) script for further information on the necessary Linux admin steps. +### Can I run multiple instances of Klipper on the same host machine? + +It is possible to run multiple instances of the Klipper host software, +but doing so requires Linux admin knowledge. The Klipper installation +scripts ultimately cause the following Unix command to be run: +``` +~/klippy-env/bin/python ~/klipper/klippy/klippy.py ~/printer.cfg -l /tmp/klippy.log +``` +One can run multiple instances of the above command as long as each +instance has its own printer config file and its own log file. + +If you choose to do this, you will need to implement the necessary +start, stop, and installation scripts (if any). The +[install-octopi.sh](../scripts/install-octopi.sh) script and the +[klipper-start.sh](../scripts/klipper-start.sh) script may be useful +as examples. + ### Why can't I move the stepper before homing the printer? The code does this to reduce the chance of accidentally commanding the |