• Repository for PCB design: https://git.gniibe.org/cgit/gnuk/fst-01.git/
  • tag: release/3.01 is the latest for the design itself, but last commit 8ee4e0d53a73993e42d1c2ccc12b08757338f4b1 added data sheet for connector.
    • • The particular data sheet is for a variant of connector with slits.
    • in the output directory, I put additional information as well as the gerber output: https://git.gniibe.org/cgit/gnuk/fst-01.git/tree/output?id=8ee4e0d53a73993e42d1c2ccc12b08757338f4b1
    • In output/README.txt, there are information for procurement for the GD32F103 chip and ZL-272 connector.
    • But those are the ones I specified, and the actual vendors/distributors are different
    • For ZL-272 with slits, it seems that it's DongGuan Yuliang Electronics Co., Limited (http://www.dgyuliang.net) which provides the connector
• The test plan I specified is: https://www.gniibe.org/memo/development/fst-01/fst-01sz-testplan.html

For prototype, I used:

• ZL-272 (without slits): https://detail.1688.com/offer/566273410945.html
• ZL-271, the metal shell: https://detail.1688.com/offer/566197153418.html

The metal case, I bought from here (it's expensive CNY3.00, for individuals): https://item.taobao.com/item.htm?id=550180089286

It's called 小胖子 (means: a little fat boy or fat man).
This looks same and cheap (<= CNY1.00):
https://detail.1688.com/offer/580707982794.html
https://detail.1688.com/offer/574102719821.html

It is called 'new' or 'version 2' (新款 or 二代 in Chinese), and the feature is tactile.

Some of my terminology: I call "case", "shell", and "board".

I use BBG-SWD (my own tool to flash MCU) for transparency of the process. It's up to you to choice a tool for initial flashing.
Just in case, here are resources to be reproducible.

• check-fst-01sz-bbg-img.txt: https://drive.google.com/open?id=1CIvqFj268-hvBB77O83YseCkEJ-xvxc4

• fst-01sz-bbg-img.xz (669MB): https://drive.google.com/open?id=1ba_CvjELkvnyPmzoL-mkTnIRz4MM92AZ

It's an image for microSD card for BeagleBone Green, and its checksum.

For the pogo-pin test clip to flash, it is available in China.

测试架PCB夹子 仿真测试治具夹具2.54探针单双排下载程序编程烧录 :
https://item.jd.com/10024257515582.html

测试架PCB 夹子 治具夹具探针下载程序编程烧录夹具:
https://item.taobao.com/item.htm?id=602259078707