USI® in partnership with STMicroelectronics developed the LoRa® expansion board for STM32 Nucleo (I-NUCLEO-LRWAN1). This board is an integrated solution allowing anyone to learn and develop solutions using LoRa® and/or FSK/OOK technologies.
The I-NUCLEO-LRWAN1 features the USI® LoRaWAN™ technology module, addressing low-cost and low-power wide area network (LPWAN), which comes with the embedded AT-command stack pre-loaded.
The I-NUCLEO-LRWAN1 can be controlled from an external host such as NUCLEO-L053 boards, running the I-CUBE-LRWAN embedded software. This software provides the means to set up a complete LoRaWAN™ node.
The I-NUCLEO-LRWAN1 is LoRaWAN™ class A certified and sustains the class C.
The I-NUCLEO-LRWAN1 includes the USI® LoRaWAN™ module, Arduino™ connectors, a SMA connector, a 50 Ω antenna and three ST environmental sensors.
For more details about all the components of the LoRa®-Middleware library, refer to the STM32 LoRa®software expansion for STM32Cube user manual (UM2073).
USI® low-cost, LPWAN module supporting LoRa® technology:
ST ultra-low-power STM32L052T8Y6 MCU, Cortex®-M0+ based with 64 Kbytes of Flash memory, 8 Kbytes of RAM, 2 Kbytes of EEPROM, T-RNG
Semtech SX1272 radio transceiver supporting LoRa®, FSK, GFSK, MSK, GMSK and OOK modulation
High sensitivity down to -137 dBm
860 MHz to 1020 MHz frequency range
14 dBm to 20 dBm output power
2.0 V to 3.6 V voltage range
-40°C to +85°C temperature range
Embedded 32 kHz and 32 MHz crystals
USART communication interface
ST accelerometer and magnetometer sensor (LSM303AGR)
ST relative humidity and temperature sensor (HTS221)
ST pressure sensor (LPS22HB)
SMA connector (antenna included in the kit)