Raspberry Pi 樹莓派社群聚會 #53

Details

The 53th Raspberry Pi meetup, the topic is “Physical AI with Raspberry Pi”.

Speaker 1: Jason Chuang(AIDATATOOLS) Topic: Comparison of Voice AI Chat Architectures for Raspberry Pi-Based Robotic Duck and Robotic Dog

1.Open Duck Mini v2 Turn-Based Conversation Pipeline: Based on the Raspberry Pi 5 platform, this architecture adopts a sequential, turn-based conversation mechanism. The system performs audio recording, speech-to-text (STT), text generation, and text-to-speech (TTS) playback in sequence. For hardware control, it directly invokes ALSA subprocesses, such as arecord and aplay, to improve system stability and reduce dependencies. It also uses dynamic energy-based VAD to accurately detect the end of speech and calibrate for ambient noise.

1. Mini Pupper 2 Real-Time Streaming Pipeline: Based on the Raspberry Pi 4B platform, this architecture uses the OpenAI Realtime API over WebSocket for bidirectional audio streaming. It supports full-duplex, low-latency communication and a “barge-in” feature. When the system detects that the user has started speaking through semantic VAD, it immediately clears the playback queue and focuses on listening, enabling a natural, human-like real-time conversational experience.

Speaker 2: sosorry(PiePie) Topic: Introduction to the myCobot 280 Six-Axis Collaborative Robot Arm: Controlling a Robotic Arm with ROS2 and LLMs

We will introduce the myCobot 280 six-axis collaborative robot arm and demonstrate how to develop applications for it using ROS2, as well as how to control it with large language models (LLMs).

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