It is an ordinary USB-TTL circuit, using the CH340G chip. It looks pretty good in the case.
Bought on Taobao, the cheapest one is less than one yuan. It looks good with the casing on
It’s just that the USB-A was chosen incorrectly, I should have bought a sinking board. Then there is no diode and two wires are soldered.
It’s somewhat imperfect!
After testing programming for STM32 and 51, there should be no problem.
Finally, the files of the PCB box are attached.
PCB box file source: https://oshwhub.com/LSanor/jlink-ob_32f103
All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.
It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.
Supported by EEWorld Datasheet