U2
U1
L1
Inductance
22uH
J2
U4
J1
J3
U3
IC1
C3
Capacitance
4.7uF
C2
Capacitance
10uF
D1
C1
Capacitance
10uF
U5
C4
Capacitance
4.7uF
C5
Capacitance
1uF
BT1
GPS_RX
VUSB
VBAT
3V3
SIM_RST
R7
Resistance
1KΩ
VBAT
VUSB
3V3
GPS_TX
SIM_TX
R3
Resistance
22 Ω
SIM_RX
SIM_RST
SCL
R8
Resistance
10KΩ
GPS_RX
3V3
3V3
3V3
SWCLK
3V3
SIM_TX
3V3
VBAT
VUSB
R4
Resistance
5KΩ
STM_RST
LED2
R2
Resistance
1KΩ
R6
Resistance
2KΩ
SDA
R5
Resistance
5KΩ
SWDIO
SDA
VBAT
LED1
SCL
R1
Resistance
1KΩ
GPS_TX
SIM_RX