The Mambo XiaoXin Robot uses the StarrySky C2-Pico open-source development board as its core controller, paired with ASR-PRO voice recognition module, forming a compact robotic system that integrates motion control, voice interaction, and intelligent response.
The StarrySky C2-Pico board is equipped with the RetroSoC chip independently developed by the ECOS(EDA, Chip, One Student One Chip, System) team. This chip is fabricated using the ICSprout 55 nm open-source PDK process flow and represents a technological achievement that combines the open instruction set RISC-V, open-source EDA, open-source IP, and open-source PDK. Its functionality and performance are benchmarked against the low- to mid-end products of ST’s F1 series.
Internally, the chip integrates the classic lightweight open-source RISC-V processor core PicoRV32, fully implementing the RV32IMC instruction set architecture, with a maximum clock frequency of up to 72 MHz. The chip includes 128 KB of on-chip SRAM, while the board further expands storage with 8 MB PSRAM and 16 MB SPI Flash, forming a multi-level memory system. In addition, the chip integrates a rich set of open-source peripheral drivers, including UART, SPI, I2C, PS/2, PWM, GPIO, timers, and more, meeting diverse embedded development requirements.