Seeeduino XIAO Bluetooth-compatible BLE nRF52840 SENSE Development Board Module

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eBay Features Powerful CPU:Nordic nRF52840, ARM® Cortex™-M4 32-bit processor with FPU operating at 64 MHz Wireless capabilities: Bluetooth-compatible 5.0, NFC, and ZigBee module with onboard antenna Ultra-small size: 21 x 17.5mm, Seeed Xiao series classic form-factor for wearable devices Ultra-low sleep power: 5 μA, deep sleep model Battery charging chip:BQ25101chip supported lithium battery charge management Rich interface: 1x Reset button, Ix UART, 1x IIC, 1x SPI, 1x NFC, 1x SWD, 11x GPIO, 6x ADC, 1x Three-in-one LED,1x User LED Onboard 2 MB flash Onboard PDM microphone and 6-axis IMU (only forXIAO BLE nRF52840 Sense) Single-sided components, surface mounting design Description As the first wireless product in the Seeed XIAO family, Seeed XIAO BLE has equipped a powerful Nordic nRF52840 MCU which is designed in a Bluetooth-compatible 5.0 module, built around 32-bit ARM® Cortex™-M4 CPU with Floating-Point Unit(FPU) operating at 64Mhz. With the capability of wireless connection, it still remains the Seeed XIAO series classic form-factor of small and exquisite which can be used for wearable devices and Internet of Things projects. Furthermore, it only costs 5 μA in the deep sleep model and it supports battery charge management because of the BQ25101 chip. To better support IoT and TinyML AI projects, there is an advanced version « Seeed XIAO BLE Sense » that carries both 6-axis IMU and PDM microphones. Compare to XIAO RP2040, XIAO BLE has a richer interface. The first thing to note is that the Near Field Communication(NFC) is functional on the board. Secondly, there is a tiny and elegant reset button on one side of the Type-C interface. On the other side, it is designed in a three-in-one LED along with a power LED. There are 11 digital i/o that can be used as PWM pins and 6 analog i/o that can be used as ADC pins. It supports UART, IIC, and SPI all three common serial ports. Same as Seeed XIAO RP2040, it has an onboard 2 MB flash which means it can also be programmed by Arduino, MicroPython, CircuitPython, or other program languages. If you are interested in programming embedded machine learning, we haveCodecraftgraphic programming that can help you quickly start your own TinyML project. And we have set up a#tinymlchannel on our Discord server, please click to join for 24/7 making, sharing, discussing, and helping each other out. We can do this all day. Specification Item Seeed XIAO BLE – nRF52840 Seeed XIAO BLE Sense – nRF52840 Processor Nordic nRF52840 The same as XIAO BLE ARM® Cortex®-M4 with FPU run up to 64 MHz Wireless Bluetooth-compatible 5.0/NFC/Zigbee The same as XIAO BLE On-chip Memory 1 MB flash and 256 kB RAM The same as XIAO BLE Onboard Memory 2 MB QSPI flash The same as XIAO BLE Interface 1xUART, 1xIIC, 1xSPI, 1xNFC, 1xSWD, The same as XIAO BLE 11xGPIO(PWM), 6xADC Sensors Onboard PDM digital microphone Onboard 6-axis IMU Dimensions 21 x 17.5mm The same as XIAO BLE Power Circuit operating voltage:3.3V@200mA The same as XIAO BLE Charging current: 50mA/100mA Input voltage (VIN): 5V Standby power consumption: <5μA Application Wearable devices Wireless connect Embedded machine learning projects Perfect for mini Arduino projects Tiny Machine Learning application Hardware Pinout Seeed XIAO Series Seeeduino XIAO series product selection reference is provided here. The table compares Seeedino XIAO, Seeed XIAO RP2040, Seeed XIAO BLE and Seeed XIAO BLE Sense in detail in terms of processor, memory, interface, etc. Item Seeeduino XIAO Seeed XIAO RP2040 Seeed XIAO BLE Seeed XIAO BLE Sense Processor SAMD21M0+@48MHz RP2040 Dual-coreM0+@133Mhz nRF52840M4F@64MHz nRF52840M4F@64MHz Wireless Connectivity N/A N/A Bluetooth-compatible 5.0/BLE/NFC Bluetooth 5.0/BLE/NFC Memory 32 KB SRAM 256KB FLASH 264 KB SRAM 2MB onboard Flash 256 KB RAM, 1MB Flash 2MB onboard Flash 256 KB RAM,1MB Flash 2MB onboard Flash Built-in Sensors N/A N/A N/A 6 DOF IMU (LSM6DS3TR-C), PDM Microphone Interfaces I2C/UART/SPI I2C/UART/SPI I2C/UART/SPI I2C/UART/SPI PWM/Analog Pins 11/11 11/4 11/6 11/6 Onboard Buttons N/A Reset/ Boot Button Reset Button Reset Button Onboard LEDs N/A Full-color RGB/ 3-in-one LED 3-in-one LED/ Charge LED 3-in-one LED/ Charge LED Battery Charge Chip N/A N/A BQ25101 BQ25101 Programming Languages Arduino/ CircuitPython Arduino/ MicroPython/ CircuitPython Arduino/ MicroPython/ CircuitPython Arduino/ MicroPython/ CircuitPython

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