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Hardware + firmware
STM32 IoT connectivity board
An STM32-based board combining wired and wireless communication. The design integrates LoRa, Bluetooth LE, LTE-M/NB-IoT, and RS-485, alongside sensor and LCD interfaces.
Wireless Connectivity & Sensor Interfaces
Key features
- Main controller: STM32L073RZT6, Arm Cortex-M0+.
- LoRa radio: RFM95W-915S2.
- Bluetooth LE: BLUENRG-345AC.
- Cellular module: Quectel BG770AGLAA-N06-SGNSA, supporting LTE-M/NB-IoT.
- RS-485 transceiver: SP3485EN-L_TR.
- Sensor interfaces.
- LCD interface.