U2
U1
BT1
J2
U4
IC1
R7
Resistance
1KΩ
R3
Resistance
22 Ω
R8
Resistance
10KΩ
U5
U3
R4
Resistance
5KΩ
LED2
R2
Resistance
1KΩ
J4
R6
Resistance
2KΩ
R5
Resistance
5KΩ
LED1
R1
Resistance
1KΩ
C3
Capacitance
4.7uF
L1
Inductance
22uH
J1
C2
Capacitance
10uF
J3
D1
C1
Capacitance
10uF
C4
Capacitance
4.7uF
C5
Capacitance
1uF
VBAT
3V3
VBAT
VUSB
3V3
3V3
3V3
3V3
3V3
3V3
VBAT
VUSB
VBAT
GPS_RX
VUSB
SIM_RST
STM_RST
SWCLK
GPS_TX
SIM_TX
SIM_RX
SIM_RST
SCL
GPS_RX
SWCLK
SIM_TX
STM_RST
SDA
SWDIO
SWDIO
SDA
SCL
GPS_TX
SIM_RX
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