Difference between revisions of "DIY STM32 Programmer (ST-Link/V2-1)"

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There are also a lot of Chinese clones available and while they have some limitations they also work quite well.
 
There are also a lot of Chinese clones available and while they have some limitations they also work quite well.
  
[[File:STLink-v2 (Chinese knock off).jpg|thumb]]
+
[[File:STLink-v2 (Chinese knock off).jpg|thumb|Chinese knock off ST-Link/V2]]
  
 
== Original ST-Link V2.1 ==
 
== Original ST-Link V2.1 ==

Revision as of 02:51, 13 July 2021

ST-Link devices are almost essential when developing software for the STM32 MCUs. They are relatively cheap and easily available.

They roughly fall into two different categories. ST themselves make a number of them and they all work quite well.

Original ST-Link

There are also a lot of Chinese clones available and while they have some limitations they also work quite well.

Chinese knock off ST-Link/V2

Original ST-Link V2.1

The schematic of the original ST-Link is readily available

ST-Link V2.1 Original Schematics.png

Schematics

Based on ST's original schematics, creating a version using only parts from JLCPCB's parts library was easy.

DIY ST-Link V2.1.svg

One thing I left out was the serial resistors of the programming header. This might very well come back and bite me in the ass but space is going to be at a premium.

PCB

The final rev. a layout looks like this:

PCB Layout rev. a.png

The KiCAD 3D model:

PCB Layout rev. a - 3D model.png

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