# MCU 'mcu' shutdown: Timer too close (Ender 3 v3 SE)

**URL:** <https://klipper.discourse.group/t/mcu-mcu-shutdown-timer-too-close-ender-3-v3-se/20692>\
**Category:** General Discussion\
**Created:** [December 15, 2024, 12:00pm UTC](https://klipper.discourse.group/t/mcu-mcu-shutdown-timer-too-close-ender-3-v3-se/20692 "2024-12-15T12:00:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Daniil1000120](https://avatars.discourse-cdn.com/v4/letter/d/b5ac83/32.png) [@Daniil1000120](https://klipper.discourse.group/u/Daniil1000120)\
**Post date:** [December 15, 2024, 12:00pm UTC](https://klipper.discourse.group/t/mcu-mcu-shutdown-timer-too-close-ender-3-v3-se/20692/1 "2024-12-15T12:00:19Z")

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### Basic Information:

Printer Model: Ender 3 V3 SE  
 MCU / Printerboard: CR4NS200320C13  
 Host / SBC: Orange Pi Zero 3  
 klippy.log: [klippy.zip](https://klipper.discourse.group/uploads/short-url/tdOHxc3pp2zKRXRjPkp90mpZMcp.zip) (1.6 MB)

### Describe your issue:

After changing Marlin to Klipper on my Ender 3 V3 SE I randomly got the same issue for about 2 times a week. Print just stops with an error “timer too close”. I checked everything, tried every solution but it just didn’t work for me. I got no webcam attached to Pi. Also I have an active cooling so temperature doesn’t go past 45℃ during print. klippy.log attached.

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**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:** [December 16, 2024, 7:10am UTC](https://klipper.discourse.group/t/mcu-mcu-shutdown-timer-too-close-ender-3-v3-se/20692/2 "2024-12-16T07:10:02Z")

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See [Timer too close](https://klipper.discourse.group/t/timer-too-close/6634)

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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:** [February 14, 2025, 7:10am UTC](https://klipper.discourse.group/t/mcu-mcu-shutdown-timer-too-close-ender-3-v3-se/20692/3 "2025-02-14T07:10:55Z")

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