<p>From what I can tell, the SD2209 is not a clone of or another name for the TMC2209, but is a board with a TMC2209 on it setup to be used as a drop-in replacement for other stepper drivers. See e.g. <a href="http://www.panucatt.com/mobile/product.aspx?ProductCode=sd2209" rel="nofollow noreferrer">this SD2209 a drop-in replacement for Pololu style drivers</a>:</p>
<p><a href="https://i.sstatic.net/0c8oP.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/0c8oP.png" alt="enter image description here" /></a></p>

CC BY-SA 4.0
2020-10-26T15:03:16.377Z
It must be designed for boards where no firmware update is envisioned: usually the trimmer is on the bottom side because unnecessary, but here they sacrificed useful heatsink surface to show the trimmer. Also, they didn't expose the DEBUG pin, which would be the third hole in a triangle with the other two on the short side and which is useful for sensorless homing, which makes sense if no firmware update is expected.
FarO
CC BY-SA 4.0
2020-10-26T15:06:05.470Z
2.7 A max current is peak, not RMS, which is misleading... but probably irrelevant if used as drop-in replacement with preset trimmer to the usual 0.8 A
FarO
CC BY-SA 4.0
2020-10-25T05:51:50.173Z
2020-10-26T11:59:00.627Z
2020-10-26T11:59:00.627Z
R.. GitHub STOP HELPING ICE
<p>While shopping for TMC2209 stepper drivers I found advertisements &quot;SD2209&quot;. Is this the same thing?</p>

<stepper-driver><tmc2209>
Is SD2209 the same as TMC2209 stepper drivers?
Zhro
# Is SD2209 the same as TMC2209 stepper drivers?

(Asked by: username_0 on 2020-10-25)

While shopping for TMC2209 stepper drivers I found advertisements "SD2209". Is this the same thing?

**Tags:** stepper-driver, tmc2209


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## 1 answers

### Answer by username_1 on 2020-10-25. Score: 2 | Accepted answer

From what I can tell, the SD2209 is not a clone of or another name for the TMC2209, but is a board with a TMC2209 on it setup to be used as a drop-in replacement for other stepper drivers. See e.g. [this SD2209 a drop-in replacement for Pololu style drivers](http://www.panucatt.com/mobile/product.aspx?ProductCode=sd2209):

[![enter image description here](https://i.sstatic.net/0c8oP.png)](https://i.sstatic.net/0c8oP.png)

> **Comments:**
> **username_2**: It must be designed for boards where no firmware update is envisioned: usually the trimmer is on the bottom side because unnecessary, but here they sacrificed useful heatsink surface to show the trimmer. Also, they didn't expose the DEBUG pin, which would be the third hole in a triangle with the other two on the short side and which is useful for sensorless homing, which makes sense if no firmware update is expected.  
> **username_2**: 2.7 A max current is peak, not RMS, which is misleading... but probably irrelevant if used as drop-in replacement with preset trimmer to the usual 0.8 A  

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