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Schematic

Layout

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U2
U1
VBAT
3V3
VBAT
VUSB
3V3
3V3
3V3
3V3
3V3
3V3
VBAT
VUSB
VBAT
GPS_RX
VUSB
SIM_RST
R7
Resistance
1KΩ
STM_RST
SWCLK
P4
GPS_TX
SIM_TX
R3
Resistance
22 Ω
SIM_RX
SIM_RST
L1
Inductance
22uH
SCL
R8
Resistance
10KΩ
GPS_RX
SWCLK
P3
SIM_TX
R4
Resistance
5KΩ
STM_RST
R2
Resistance
1KΩ
R6
Resistance
2KΩ
SDA
SWDIO
R5
Resistance
5KΩ
SWDIO
SDA
SCL
R1
Resistance
1KΩ
GPS_TX
SIM_RX
C3
Capacitance
4.7uF
C2
Capacitance
10uF
J3
C1
Capacitance
10uF
C4
Capacitance
4.7uF
C5
Capacitance
1uF
J1
D1
U5
U3
LED2
LED1
J4
J2
BT1
U4
IC1
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