I use stm8s003f to directly connect the USB to serial cable (pls2303, TX, RX, GND), using the internal 16M clk, but the computer serial port receives the normal number of bytes, but the data is wrong.
[i=s]This post was last edited by Rambo on 2020-3-12 14:02[/i]The mainboard used is DFRobot's latest FireBeetleESP32 mainboard, which is much smaller than the traditional Arduino Uno mainboard. In add
[size=4]1. The PCB routing can be done according to the wiring rules. When there is space on the PCB, two Y capacitors can be placed: the + of the primary large capacitor to the secondary ground; the