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

Pet Tracker Reference Design kC3G 1YiY