Seeed Studio Studio XIAO nRF54L15 Sense Dev Board w/ BLE 6.0, IMU & Mic

The board is primarily programmed using Nordic Semiconductor's nRF Connect SDK or the Zephyr RTOS via the onboard USB-C port and Serial Wire Debug (SWD) interface. You can also use PlatformIO or Arduino frameworks with appropriate board support packages. Install the necessary toolchain, connect the board via USB, and flash your compiled firmware using the nRF Programmer tool or command-line utilities like 'west flash'. The board appears as a COM port for serial communication.

The board features ultra-low-power modes, with a minimum System OFF current of 0.6 µA. Active current depends on wireless activity and CPU load. For battery operation, connect a 3.7V Li-ion or Li-Po cell to the battery terminals. The integrated charging circuit manages charging via the USB-C port. Use deep sleep APIs in your firmware to maximize battery life, disabling radios and putting the core into low-power states between measurement or transmission intervals.

Access the digital microphone and 6-axis IMU via I2C or dedicated digital interfaces using drivers provided in the nRF Connect SDK/Zephyr. For the IMU, read accelerometer and gyroscope data registers. For the microphone, configure the PDM peripheral for audio sampling. Example code is available in Nordic Semiconductor's SDK samples. Ensure your application handles the sensor data rates and processing loads, potentially using DMA for efficient audio data transfer to memory.

Yes, the nRF54L15 SoC natively supports the OpenThread stack for Thread routers, the Matter protocol over Thread or Wi-Fi, and Zigbee. You can build it as a Matter-compliant border router, a Thread leader, or a Zigbee coordinator using the respective libraries in the nRF Connect SDK. Configuration involves setting the correct network role, commissioning devices, and managing the network stack, which requires a stable power source as coordinator devices typically cannot use deep sleep.