This project is used to verify the solution verification board design of Lichuang Mall USB chip CH330N (product number: C108996) and low dropout linear regulator (LDO) AMS1117-3.3 0.8A (product number: C351784) ESP01 burning is relatively relatively It’s troublesome, so use CH330N and AMS1117-3.3 to make a burner, which can also be used for daily use. Blank board photos. 
Welding is completed 
. Connect to the computer 
and burn firmware.
Perfect for 
AT debugging
. It can be said to be a burner for ESP01 and serial port to USB. artifact
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