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Files

Schematic

Layout

3D View

Module4
Voltage Regulator Current Limit Module 3.3V Out
Module3
Voltage Regulator SMPS 3.3V Out
Module9
LoRaWAN Module
Module7
Microphone Module
Module6
External Flash Module
U1
Module5
SD Card Module
Module2
Power Source Selector Module
Module1
Crystal Oscillator (12 MHz) Module
Module8
Temperature Sensor Module
C10
Capacitance
0.1µF
C12
Capacitance
0.1µF
C13
Capacitance
0.1µF
C6
Capacitance
0.1µF
C8
Capacitance
0.1µF
C2
Capacitance
0.1µF
C4
Capacitance
0.1µF
C7
Capacitance
0.1µF
C9
Capacitance
0.1µF
C11
Capacitance
0.1µF
C3
Capacitance
0.1µF
STORAGE & FLASH
POWER INPUT
POWER SELECTION
R7
Resistance
27.4 Ω
R15
Resistance
50 Ω
R8
Resistance
27.4 Ω
INPUT CIRCUITS
OUTPUT CIRCUITS
MECHANICAL
SOLAR
DECOUPLING CAPACITORS 1.1V
Line 1
Place as close as possible to the MCU 1.1V lines - DVDD and GND pins
R19
Resistance
1.5kΩ
LED1
Color
Green
CONTROL CIRCUIT (MCU)
USB-C
J1
BATTERY
MOUNTING HOLES
POWER REGULATION
R16
Resistance
50 Ω
J3
C1
Capacitance
1µF
C5
Capacitance
1µF
J2
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