# Custom Extension Module

**URL:** https://forum.snapmaker.com/t/custom-extension-module/13424
**Category:** Snapmaker 2.0 (3-in-1)
**Created:** [December 27, 2020, 2:17pm UTC](https://forum.snapmaker.com/t/custom-extension-module/13424 "2020-12-27T14:17:57Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![Streupfeffer](https://avatars.discourse-cdn.com/v4/letter/s/f9ae1b/32.png) [@Streupfeffer](https://forum.snapmaker.com/u/Streupfeffer)
#### Post date: [December 29, 2020, 12:30pm UTC](https://forum.snapmaker.com/t/custom-extension-module/13424/5 "2020-12-29T12:30:59Z")

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a pair of solderd D-Subs later

 ![IMG_20201229_124703_8](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/f/f3c482fb10dbe2e73fe10efca02933ec2761cb75.jpeg) ![IMG_20201229_130410_3](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/0/04c43f6191ea414423bbb986d66259f6dee8605a.jpeg)  
Testing them also didnt kill my Controller and the Analyser is able to read CANbus so im assuming they are “to spec” ?

Pinouts of the Snapmaker cabels, only CAN and power are used in my Connectors, Step and such arent requierd for my usage so they are shrinked off.

 ![grafik](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/3/3f5f8ae5bd7fa168c383a4ba7d3a0e606cb13a0b.png)

DB9 Connector Pinout:  
2: CAN\_L  
3: CAN\_GND  
6: GND  
7: CAN\_H  
9: CAN\_PWR  
Pin 3 and Pin 6 are connected inside the D-Sub Connectors in my case. (as no PCB bridge exists sofar and having 2 GND connections sounds better)  
CAN\_PWR is carrying 24V (didnt see a voltage described in the [Spec](http://www.interfacebus.com/Can_Bus_Connector_Pinout.html).)

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