Low-cost cloud-connecting kit, with multiple sensors, for STM32 IoT developers

Low-cost cloud-connecting kit, with multiple sensors, for STM32 IoT developers

New Products |
By Graham Prophet

Intended to connect IoT devices to Cloud services power-efficiently and cost-effectively, this IoT development kit adds modules for Bluetooth low energy (BLE), sub-GHz RF (in 915 MHz or 868 MHz variants), and Wi-Fi, with a dynamic NFC-tag IC with printed antenna to a high-performance, ultra-low power STM32L4 microcontroller, all on the same board.


This selection of sensors, acessing ST’s portfolio of MEMS (Micro-Electro-Mechanical Systems) and laser-ranging devices, supports both user interaction and environmental awareness. A MEMS accelerometer and gyroscope IC and MEMS magnetometer for 9-axis motion sensing, a barometric pressure sensor, temperature/humidity sensor, two omnidirectional digital microphones, as well as a FlightSense proximity and gesture sensor, are all ready to use with no extra integration.


The Discovery kit employs ST’s X-CUBE-AWS expansion software to connect to the Amazon Web Services (AWS) IoT platform, and access tools and services in the Cloud, such as device monitoring and control, data analysis, and machine learning. Support for other Cloud providers will be added in future, as well as software function packs that provide all the components needed to prototype end-to-end IoT solutions, including pre-integrated full application examples.


The heart of the kit is an 80 MHz STM32L475 32-bit microcontroller that combines the ARM Cortex-M4 core featuring DSP extensions, 1 MB on-chip Flash, and low-power technologies to help build smart IoT devices on a tight power budget. Custom functionality may be added using the industry-standard Arduino and Pmod expansion connectors.


Equipped with the ST-Link debugger/programmer on-board, the kit does not need any external probe, and can be used with ARM Keil MDK-ARM, IAR EWARM, or GCC/LLVM-based Integrated Development Environments (IDEs) including free AC6 SW4STM32, or with mbed online tools. The STM32L4 IoT Discovery kit is priced at $53.00 (part number B-L475E-IOT01A1 for 915MHz operating frequency, or B-L475E-IOT01A2 for 868MHz operating frequency).





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