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Schematic

Layout

3D View

L2
Inductance
Inductance
USER
C5
Capacitance
0.01uF
LED_R
MCU_RST
C6
Capacitance
0.01uF
REED
BOOT
C3
Capacitance
0.01uF
C4
Capacitance
22uF
TX
LED_R
LED_G
TX
MCU_RST
BOOT
SWDIO
RX
SDA
MCU_RST
BOOT
RX
SWCLK
C10
Capacitance
1uF
LED_B
TX
LED_B
RX
C2
Capacitance
22uF
SWDIO
REED
LED_G
C8
Capacitance
22uF
USER
SWCLK
C1
Capacitance
0.01uF
SDA
SCL
SCL
BAT1
C7
Capacitance
Capacitance
LED1
SDA
BOOT
DIO
USER
SCL
TX
C9
Capacitance
Capacitance
RX
CLK
EN
R1
Resistance
470 Ω
+3V3
VBAT
R6
Resistance
50 Ω
+3V3
+3V3
+3V3
L1
Not Recommended for New Designs
Inductance
2.2uH
IC1
R3
Resistance
135 Ω
+3V3
R2
Resistance
100kΩ
R5
Resistance
50 Ω
R4
Resistance
50 Ω
REED1
U1
Y1
PROG

LoRa Door and Window Sensor Reference Design