USI® STM32™ Nucleo expansion board for LoRa™

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 embedded AT-commands 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).

The I-NUCLEO-LRWAN1 is supplied by a third party not affiliated to ST. For complete and latest information, refer to the third party GitHub page

Key Features

  • 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 to 1020 MHz frequency range
    • 14 to 20 dBm output power
    • 2.0 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)
  • Arduino™ connectors
  • SMA connector (antenna included in the kit)




Technical Documentation

Product Specifications
Description Version Size
DB3169 DB3169: USI® LoRa® expansion board for STM32 Nucleo 3.0 290 KB

Presentations & Training Material

Description Version Size
IoT connectivity made easier with STM32 MCUs and LoRa 1.2.0 2 MB
STM32 Development Boards Portfolio 1.0 3 MB

Publications and Collaterals

Description Version Size
Get ready for the largest IoT development ecosystem 18.02 748 KB
Description Version Size
STM32L series - Ultra-low-power 32-bit MCUs 18.02 3 MB

Quality & Reliability

Product Certifications
Description Version Size
Certificate of compliance LoRaWAN certified product delivered to USI® 1.0 277 KB

Tools and Software

Embedded Software
MCUs Embedded Software
Support & Community

Sample & Buy

Part Number Marketing Status Unit Price (US$) * Quantity Specific features ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
I-NUCLEO-LRWAN1 Active 24.50 1 Sub-GHz (868 MHz to 915 MHz) RF module NEC 3A991A2 - MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status RoHS Compliance Grade Material Declaration**
I-NUCLEO-LRWAN1 ActiveEcopack1

(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.