The Adafruit Feather Bluefruit Sense takes our popular Feather nRF52840 Express and adds a smorgasbord of sensors to make a great wireless sensor platform. This Feather microcontroller comes with Bluetooth Low Energy and native USB support featuring the nRF52840!  This Feather is an ‘all-in-one’ Arduino-compatible + Bluetooth Low Energy with built-in USB plus battery charging. With native USB it works great with CircuitPython, too.

Like the Feather nRF52840, this chip comes with Arduino IDE support- you can program the nRF52840 chip directly to take full advantage of the Cortex-M4 processor, and then calling into the Nordic SoftDevice radio stack when you need to communicate over BLE. Since the underlying API and peripherals are the same for the ‘832 and ‘840, you can supercharge your older nRF52832 projects with the same exact code, with a single recompile!

This Feather is also a BLE-friendly CircuitPython board! CircuitPython works best with disk drive access, and this is the only BLE-plus-USB-native chip that has the memory to handle running a little Python interpreter. The massive RAM and speedy Cortex M4F chip make this a good match. Make centrals or peripherals with the ease of CircuitPython.

A chorus of supporting sensors surround the module so you can do all sorts of environmental and motion-sensing:

1. ST Micro series 9-DoF motion – LSM6DS33 Accel/Gyro + LIS3MDL magnetometer
2. APDS9960 Proximity, Light, Color, and Gesture Sensor
3. PDM Microphone sound sensor
4. SHT Humidity
5. BMP280 temperature and barometric pressure/altitude

Features:

1. ARM Cortex M4F (with HW floating point acceleration) running at 64MHz
2. 1MB flash and 256KB SRAM
3. Native Open Source USB stack – pre-programmed with UF2 bootloader
4. Bluetooth Low Energy compatible 2.4GHz radio
5. FCC / IC / TELEC certified module
6. Up to +8dBm output power
7. 21 GPIO, 6 x 12-bit ADC pins, up to 12 PWM outputs (3 PWM modules with 4 outputs each)
8. Pin #13 red LED for general purpose blinking, Blue LED for general purpose connection status, NeoPixel for colorful feedback
9. Power/enable pin
10. Reset button
11. SWD debug pads on the bottom of the PCB

Package Includes:

1 x Adafruit Feather nRF52840 Sense

With a discovery kit for IoT nodes, multi-channel communication with STM32L4+ series users develop applications with direct connection to cloud servers. It features ultra-low power STM32L4+ series STM32L4S5VIT6 microcontroller based on Arm® Cortex®-M4 core with 2Mbytes of Flash memory and 640Kbytes of RAM in LQFP100 package. The discovery kit enables a wide diversity of applications by exploiting low-power communication, multiway sensing, and Arm® Cortex®-M4 core-based STM32L4+ series features. The support for ARDUINO® Uno V3 and Pmod™ connectivity provides unlimited expansion capabilities with a large choice of specialized add-on boards. It features an on-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability (mass storage, virtual COM port and debug port). Comprehensive free software libraries and examples are available with the STM32Cube MCU package. It support of a wide choice of Integrated Development Environments (IDEs) including IAR™, Keil®, and STM32CubeIDE.

Note: For more technical details go through Datasheet in the attachment section 

Features:

1. 64Mbit quad SPI flash memory from Macronix™
2. Bluetooth® 4.1 module (SPBTLE-RF)
3. 802.11 b/g/n compliant Wi‑Fi® module (ISM43362-M3G-L44) from Inventek Systems
4. Dynamic NFC tag based on ST25DV04K with its printed NFC antenna
5. Two digital omnidirectional microphones (MP34DT01), 260-1260hPa absolute barometer (LPS22HB)
6. High performance 3-axis magnetometer (LIS3MDL), 3D accelerometer and 3D gyroscope (LSM6DSL)
7. Time-of-flight and gesture-detection sensor (VL53L0X), highly-secure solution (STSAFE-A110)
8. 2 push-buttons, USB OTG FS with micro-AB connector, ARDUINO® Uno V3 expansion connector
9. Pmod™ expansion connector, flexible power-supply options (ST-LINK, USB VBUS or external sources)

Package Includes:

1 x STMicroelectronics  B-L4S5I-IOT01A  Discovery Kit, STM32L4S5VIT6, Internet of Things (IoT)

The X-NUCLEO-NFC02A1 is a dynamic NFC/RFID tag board based on M24LR04E-R, for the expansion of STM32 Nucleo boards.
The M24LR04E-R is an NFC Type V/RFID tag IC with a dual-interface 4 Kbit Electrically Erasable Programmable Read-Only Memory (EEPROM) that also features an I2C interface. The EEPROM is organized as 512 x 8-bit in the I2C mode and as 128 x 32-bit in the RF mode. It can be operated either from an external power supply or directly powered by the received carrier electromagnetic field

Note:  For more technical details go through  Datasheet in the attachment section

Features:

1. STM32 expansion board based on the M24LR04E-RMN6T/2 Dynamic NFC/RFID tag
2.  Up to 4 Kbit memory with NDEF support
3.  30 mm x 30 mm 13.56 MHz double-layer inductive antenna etched on the PCB
4. Compatible with STM32 Nucleo boards
5.  Equipped with Arduino™ UNO R3 connector
6.  Self-powered or powered through the Arduino™ UNO R3 connectors

Package Includes:

1 x STMicroelectronics Expansion Board, M24LR Dynamic NFC/RFID Tag IC, For STM32 Nucleo

Features:

1. Low duty cycle RX/TX operation mode
2. Automatic acknowledgment, retransmission and timeout protocol engine
3. AES 128-bit encryption co-processor
4. SPI interface for microcontroller

Package Includes:

1 x STMICROELECTRONICS Daughter Board, SPIRIT1 Low Data Rate Transceiver, 169 Mhz, Sub 1 GHz Wireless Applications

The STM32F3348-DISCO is a discovery kit with STM32F334 line microcontrollers. The STM32F334 discovery kit is a low cost and easy to use development kit to quickly evaluate and start a development with an STM32F3 series ARM 32bit Cortex M4 high performance microcontroller. It is based on an STM32F334C8T6 and includes an ST-LINK/V2-1 embedded debug tool interface, high brightness LED dimming with buck converter, buck/boost converter, LED’s and push-buttons.

Note: Actual product may vary in terms of color, design.

Features:

1. STM32F334C8T6 ARM Cortex-M4 32bit CPU with FPU(72MHz), single cycle multiplication and HW division
2. Onboard ST-LINK/V2-1 with selection mode switch to use the kit as a standalone STLINK/ V2-1
3. USB re-enumeration capability with three different interfaces supported on USB
4. Power supply through USB bus or from an external 5V supply voltage
5. Extension header for LQFP48 I/Os for a quick connection to the prototyping board and easy probing
6. Two push buttons, One for user and another for reset

Packages Includes:

1 x STMICROELECTRONICS Development Board, STM32F334C8T6 MCU, 64KB Flash Memory, USB Re-Enumeration Capability