# My Ender 3 v3 se is not connecting to klipper **URL:** \ **Category:** General Discussion\ **Created:** [December 3, 2024, 6:16am UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414 "2024-12-03T06:16:27Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Heremonkey](https://avatars.discourse-cdn.com/v4/letter/h/7cd45c/32.png) [@Heremonkey](https://klipper.discourse.group/u/Heremonkey)\ **Post date:** [December 3, 2024, 6:16am UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/1 "2024-12-03T06:16:27Z")
### Basic Information: Printer Model: Ender 3 v3 se MCU / Printerboard:idk Host / SBC: e3v3.se klippy.log _Fill out above information and_ **_in all cases attach your_ `klippy.log` _file_** (use zip to compress it, if too big). _Pasting your_ `printer.cfg` _is **not** needed_ _ **Be sure to check our “Knowledge Base” Category first. Most relevant items, e.g. error messages, are covered there** _ ### Describe your issue: I’ve been trying to install klipper on my ender3 v3 se for a while now but every time mainsail says mcu not found … ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [December 3, 2024, 6:47am UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/2 "2024-12-03T06:47:42Z")
Hello @Heremonkey ! One important part is missing: ![grafik](https://global.discourse-cdn.com/free1/uploads/klipper/original/3X/0/0/00354a50e7e39ef1b8dab374dec829e658f2865a.png) Please attach it to your next post. > [@How-To Ask for Help](https://klipper.discourse.group/t/how-to-ask-for-help/6327/1): > > How-To Ask for Help General All contributors here help out in their spare time and because they want to give something back to the Klipper project. Be respectful and patient. If someone knows the answer to your question, they will answer it. Choose the right Category Questions / Issues should go into the General Discussion category most of the time. Filling the template is mandatory. The categories Config, Developers and Macros are used to post results of one’s work for the benefit of others T… ---
**Author:** ![Heremonkey](https://avatars.discourse-cdn.com/v4/letter/h/7cd45c/32.png) [@Heremonkey](https://klipper.discourse.group/u/Heremonkey)\ **Post date:** [December 3, 2024, 7:08am UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/3 "2024-12-03T07:08:19Z")
[klippy.log](https://klipper.discourse.group/uploads/short-url/g7qyX1wjCOXqvQcRPhkf4ktDfj8.log) (57.1 KB) i hope this works? ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [December 3, 2024, 7:33am UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/4 "2024-12-03T07:33:31Z")
Did you install Klipper by the use of KIAUH? How did you obtain this: ```auto serial = /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0 ``` Did you create the firmware for the board by yourself with the help Klipper or did you download it from somewhere? ---
**Author:** ![Heremonkey](https://avatars.discourse-cdn.com/v4/letter/h/7cd45c/32.png) [@Heremonkey](https://klipper.discourse.group/u/Heremonkey)\ **Post date:** [December 3, 2024, 1:20pm UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/5 "2024-12-03T13:20:45Z")
i got it from tutorials and github ---
**Author:** ![Heremonkey](https://avatars.discourse-cdn.com/v4/letter/h/7cd45c/32.png) [@Heremonkey](https://klipper.discourse.group/u/Heremonkey)\ **Post date:** [December 3, 2024, 1:21pm UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/6 "2024-12-03T13:21:17Z")
yes i downloaded it with kiauh ---
**Author:** ![hcet14](https://avatars.discourse-cdn.com/v4/letter/h/ecd19e/32.png) [@hcet14](https://klipper.discourse.group/u/hcet14)\ **Post date:** [December 3, 2024, 7:57pm UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/7 "2024-12-03T19:57:00Z")
Did you try [How-To Trouble-Shoot](https://klipper.discourse.group/t/how-to-trouble-shoot/6326#connection-problems-to-the-printer-board-4) “Connection Problems to the Printer Board”? Good luck. hcet ---
**Author:** ![Heremonkey](https://avatars.discourse-cdn.com/v4/letter/h/7cd45c/32.png) [@Heremonkey](https://klipper.discourse.group/u/Heremonkey)\ **Post date:** [December 3, 2024, 8:16pm UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/8 "2024-12-03T20:16:31Z")
Yes but it didn’t work ---
**Author:** ![hcet14](https://avatars.discourse-cdn.com/v4/letter/h/ecd19e/32.png) [@hcet14](https://klipper.discourse.group/u/hcet14)\ **Post date:** [December 3, 2024, 8:46pm UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/9 "2024-12-03T20:46:54Z")
> [@Heremonkey](#): > > I’ve been trying to install klipper on my ender3 v3 se for a while now but every time mainsail says mcu not found Have yo ever tried a clean “Klipper installation” without all the g-code macros to get your Ender running basically? ---
**Author:** ![Heremonkey](https://avatars.discourse-cdn.com/v4/letter/h/7cd45c/32.png) [@Heremonkey](https://klipper.discourse.group/u/Heremonkey)\ **Post date:** [December 4, 2024, 12:32am UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/10 "2024-12-04T00:32:22Z")
i just got it working. i had to set the baud to in the printer.cfg files ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\ **Post date:** [January 3, 2025, 10:32am UTC](https://klipper.discourse.group/t/my-ender-3-v3-se-is-not-connecting-to-klipper/20414/11 "2025-01-03T10:32:33Z")
This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.