IC1
MCU_TX
+3.3V
USB_DN
GPIO0
MCU_RX
GNDTERMINAL
USB_DP
RESET
Q2
TX
R6
Resistance
10kΩ
RX
R5
Resistance
10kΩ
R3
Resistance
5.1kΩ
C3
Capacitance
0.1uF
R4
Resistance
5.1kΩ
Q1