warble

Fully local AI voice backend for the M5Stack StackChan robot (whisper.cpp + Silero VAD + Ollama + Piper) - replaces the xiaozhi.me cloud, no API keys, runs on your own machine. Maintained by rebelthor on GitHub, where it has earned 20 stars from the community.

It's actively developed around esp32-s3, local-llm, m5stack, and is a solid reference for anyone building with these tools.