I did a small projet with it:
https://hackaday.io/project/8299-hal...rting-skeleton
My WTV020 is different from yours (https://www.banggood.com/WTV020-SD-1...r_warehouse=CN) but it's probaby the same.
Please note :
- there are different version of firmware on theses things. Some are standalone players with play/next/prev/stop only, no serial control.
- I did this project in a hurry, for a unique day usage![]()




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