Understanding U1 Functionality

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Please explain what U1 does.
304 days

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U1 is the U1 LoRa transceiver module. It provides the wireless communication link for the soil monitor by using the LoRa protocol at 915 MHz. In this design, it interfaces with the microcontroller (U2) via SPI, transmitting and receiving data over long distances while maintaining low power consumption.
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sensor
C3
Capacitance
1uF
IN
LED_R
LED_G
LED_B
3V3
LED1
R4
Resistance
220 Ω
R2
Resistance
220 Ω
R5
Resistance
10kΩ
R1
Resistance
220 Ω
IC1
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LoRa soil monitor Reference Design

LoRa soil monitor Reference Design thumbnail
This is a LoRa soil monitor Reference Design. It uses a STM32L031G6U6S microcontroller and a RFM95W-915S2 LoRa transceiver, integrated with sensor interfacing and LED indicators. Communication occurs via USART and SPI. The system is powered using a battery. #referenceDesign #simple-embedded #stm #template #reference-design

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