# Can anyone help me install Klipper on my ender 3?

**URL:** <https://klipper.discourse.group/t/can-anyone-help-me-install-klipper-on-my-ender-3/13612>\
**Category:** General Discussion\
**Created:** [January 29, 2024, 2:05am UTC](https://klipper.discourse.group/t/can-anyone-help-me-install-klipper-on-my-ender-3/13612 "2024-01-29T02:05:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mc\_modder](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/mc_modder/32/9837_2.png) [@mc\_modder](https://klipper.discourse.group/u/mc_modder)\
**Post date:** [January 29, 2024, 2:05am UTC](https://klipper.discourse.group/t/can-anyone-help-me-install-klipper-on-my-ender-3/13612/1 "2024-01-29T02:05:14Z")

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I’m trying to install Klipper on my ender 3 (base model). I’ve flashed mainsail on my raspberry pi, I flashed Klipper on my ender 3, but whenever I try to go to mainsail, I get: Klipper reports: STARTUP

Printer is not ready The klippy host software is attempting to connect. Please retry in a few moments.

After this, I eventually get a:

Klipper reports: ERROR

mcu ‘mcu’: Unable to connect  
Once the underlying issue is corrected, use the  
“FIRMWARE\_RESTART” command to reset the firmware, reload the  
config, and restart the host software.  
Error configuring printer

I reflashed marlin then reflashed klipper but no luck. I tried putting both string from the ls commands in the mcu section of the printer.cfg but still nothing. What should I do?  
[klippy(10).log](https://klipper.discourse.group/uploads/short-url/rBimtms7RzeDezuT4TFZBmr4gMu.log) (173.7 KB)  
[printer.cfg](https://klipper.discourse.group/uploads/short-url/6kctDEw66VoJURbY9wEhJx5ekll.cfg) (2.5 KB)

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<div class="post-metadata">

**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\
**Post date:** [January 29, 2024, 7:44am UTC](https://klipper.discourse.group/t/can-anyone-help-me-install-klipper-on-my-ender-3/13612/2 "2024-01-29T07:44:19Z")

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See [Mcu: Serial connection closed / Timeout on connect / Wait for identify\_response](https://klipper.discourse.group/t/mcu-serial-connection-closed-timeout-on-connect-wait-for-identify-response/6645)

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\
**Post date:** [March 29, 2024, 7:45am UTC](https://klipper.discourse.group/t/can-anyone-help-me-install-klipper-on-my-ender-3/13612/3 "2024-03-29T07:45:04Z")

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