# MCU not seen after flashing SKR 3 EZ

**URL:** <https://klipper.discourse.group/t/mcu-not-seen-after-flashing-skr-3-ez/19232>\
**Category:** General Discussion\
**Created:** [October 6, 2024, 4:38am UTC](https://klipper.discourse.group/t/mcu-not-seen-after-flashing-skr-3-ez/19232 "2024-10-06T04:38:22Z")\
**Posts on this page:** 1\
**Showing post:** 9

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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:** [October 8, 2024, 4:17pm UTC](https://klipper.discourse.group/t/mcu-not-seen-after-flashing-skr-3-ez/19232/9 "2024-10-08T16:17:16Z")

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Basically it is quite simple.

The basis for any new config is always the reference pin / function assignment of your new board:

- [SKR-3/Hardware (SKR 3 EZ)/BIGTREETECH SKR 3 EZ V1.0-PIN.pdf at master · bigtreetech/SKR-3 · GitHub](https://github.com/bigtreetech/SKR-3/blob/master/Hardware%20(SKR%203%20EZ)/BIGTREETECH%20SKR%203%20EZ%20V1.0-PIN.pdf)
- [SKR-3/Firmware/Klipper/generic-bigtreetech-skr-3.cfg at master · bigtreetech/SKR-3 · GitHub](https://github.com/bigtreetech/SKR-3/blob/master/Firmware/Klipper/generic-bigtreetech-skr-3.cfg)

To reflect the requirements of your special printer, consult the [example for this printer](https://github.com/Klipper3d/klipper/blob/master/config/printer-sovol-sv06-plus-2023.cfg) and copy over:

- `[printer]` section
- `position_endstop`
- `position_max` / `position_max`
- sensor definitions

Thats about all to do.

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_[View the full topic](https://klipper.discourse.group/t/mcu-not-seen-after-flashing-skr-3-ez/19232)._