Sipeed M1s BL808 RISC-V AIoT Module w/ Wi-Fi BT BLE

The BL808 SoC includes a Memory Management Unit (MMU), enabling it to run full Linux distributions, which simplifies application development compared to microcontroller RTOS. It also supports bare-metal and RTOS environments like FreeRTOS for low-level control. The official Bouffalo Lab SDK provides the necessary toolchains and bootloaders to build and flash firmware for both Linux and real-time operating systems onto the onboard SPI flash.

The module supports cameras via both DVP (Digital Video Port) and MIPI-CSI interfaces. The integrated hardware video encoder can simultaneously encode two streams: one up to 1920x1080 (1080p) at 30 frames per second and another up to 640x480 (480p) at 30 fps in H.264 or MJPEG formats. You will need to design or use a carrier board that breaks out the required camera interface pins and provides appropriate power to your chosen camera sensor module.

The module requires multiple voltage rails for proper operation: VDDIO4, VDDIO3, VDDIO1 (likely for different IO bank voltages), and a main 3.3V supply. A typical carrier board must include a power management circuit that generates these stable voltages. The exact current requirements depend on active cores, wireless radio usage, and peripheral load, so consult the BL808 datasheet for detailed power planning when designing your baseboard.

No, the wireless subsystem is designed to use one antenna at a time. The module provides both an IPEX-I connector for an external antenna and an integrated PCB trace antenna. You must configure the software or hardware settings (often via a GPIO or register) to select the desired antenna path. Using an external antenna via the IPEX connector typically provides better range and signal stability by distancing the radiator from board noise.