U2
C3
Capacitance
4.7uF
L1
Inductance
22uH
U5
C5
Capacitance
1uF
GPS_RX
VBAT
3V3
SIM_RST
VUSB
GPS_TX
SIM_TX
R3
Resistance
22 Ω
SCL
R8
Resistance
10KΩ
GPS_RX
3V3
3V3
3V3
SWCLK
3V3
3V3
STM_RST
R2
Resistance
1KΩ
SDA
SWDIO
SDA
SCL
R1
Resistance
1KΩ
GPS_TX
SIM_RX
J2
D1
BT1
U4
U3
LED1