# SLB-EXT motor connection help - Please

**URL:** <https://forum.sienci.com/t/slb-ext-motor-connection-help-please/26165>\
**Category:** ❓Question\
**Created:** [April 14, 2026, 4:17am UTC](https://forum.sienci.com/t/slb-ext-motor-connection-help-please/26165 "2026-04-14T04:17:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![RiceyNZ](https://forum.sienci.com/letter_avatar_proxy/v4/letter/r/8dc957/32.png) [@RiceyNZ](https://forum.sienci.com/u/RiceyNZ)\
**Post date:** [April 14, 2026, 4:17am UTC](https://forum.sienci.com/t/slb-ext-motor-connection-help-please/26165/1 "2026-04-14T04:17:39Z")

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Hello Everyone, while I’ve put together several CNC machines now I, ve never worked with Closed loop Steppers and without drivers.

 ![Screenshot 2026-04-14 at 3.59.52 PM](https://forum.sienci.com/uploads/default/original/2X/8/829a8a1a72d2cfa5b7dd076aa9fcf9235fbb3ae1.jpeg)

This is where i’m now stumped, attached is the wiring from my closed Loop Steepers, Im at a loss as to get the correct pins to connect too on the SLB-EXT, I do have all the necessary plugs for the SLB\_EXT.

Would someone take the time to help me out?

I have searched without success, or maybe Ive just missed it.  
I really could do with some help.

EDIT: Ive just noticed my stepper motors dont have dip switches, I suspect his could be a problem for me , damn!

Thanks in advance…

Shayne (New Zealand)

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**Author:** ![Chucky\_ott](https://forum.sienci.com/user_avatar/forum.sienci.com/chucky_ott/32/8692_2.png) [@Chucky\_ott](https://forum.sienci.com/u/Chucky_ott)\
**Post date:** [April 14, 2026, 8:43am UTC](https://forum.sienci.com/t/slb-ext-motor-connection-help-please/26165/2 "2026-04-14T08:43:19Z")

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@RiceyNZ Welcome to the forum. Did you take a look at the SLB documentation to see if the information you require is there?

> **[SLB-EXT Controller - AltMill 4x8 CNC](https://resources.sienci.com/view/am4x8-slb-ext-controller/)**
>
> The SLB-EXT is a variation of the SLB (SuperLongBoard) CNC controller, which both run grblHAL firmware. The main differences can be summarized as: SLB-EXT supports closed and open XYZ loop motors (with external drivers), SLB only supports open loop...

> **[slb-ext-Pinout-list.pdf](https://resources.sienci.com/wp-content/uploads/2024/09/slb-ext-Pinout-list.pdf)**
>
> 16.92 MB

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<div class="post-metadata">

**Author:** ![RiceyNZ](https://forum.sienci.com/letter_avatar_proxy/v4/letter/r/8dc957/32.png) [@RiceyNZ](https://forum.sienci.com/u/RiceyNZ)\
**Post date:** [April 14, 2026, 1:14pm UTC](https://forum.sienci.com/t/slb-ext-motor-connection-help-please/26165/3 "2026-04-14T13:14:53Z")

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My Mistake, I’ve just ordered the external drivers needed. I feel like a bit of a fool.

Thanks for taking the time