- Novinka
RLX COMPONENTS s.r.o. , Electronic Components Distributor.
RLX COMPONENTS s.r.o. , Electronic Components Distributor.
Seeed XIAO BLE nRF52840 Sense - TinyML/TensorFlow Lite- IMU / Microphone - Bluetooth5 (SE-102010469)
As the advanced version of the board XIAO BLE, Seeed XIAO BLE Sense has equipped a powerful Nordic nRF52840 MCU which is designed in a Bluetooth 5.0 module, built around 32-bit ARM® Cortex™-M4 CPU with Floating-Point Unit(FPU) operating at 64Mhz. With the capabilities 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.
In addition, it carries two extra onboard sensors. One of them is a digital microphone created through Pulse Density Modulation(PDM) module on the nRF52840 chip. It can receive audio data in real-time which allows it can be used for audio recognition. The board not only receives audio data but also can speak through the MSM261D3526H1CPM microphone. The other one is 6-axis Inertial Measurement Unit(IMU) which can be applied in TinyML projects like gesture recognition. These onboard sensors provide a great convenience for users and the ultra-small size feature of the board has still remained.
Same as XIAO BLE, Seeed XIAO BLE Sense contains a wealthy 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 have Codecraft graphic programming that can help you quickly start your own TinyML project. And we have set up a #tinyml channel 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.
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 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 |
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Sensors |
|
Onboard PDM digital microphone |
Onboard 6-axis IMU |
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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 |
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Input voltage (VIN): 5V |
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Standby power consumption: <5μA |
XIAO BLE Sense is compatible to the XIAO expansion board.
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 | SAMD21 M0+@48MHz | RP2040 Dual-core M0+@133Mhz | nRF52840 M4F@64MHz | nRF52840 M4F@64MHz |
Wireless Connectivity | N/A | N/A | Bluetooth 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 |
Attention:
All the I/O pins are 3.3V, please do not input more than 3.3V, otherwise, the CPU may be damaged.