{"slug": "voice-control-toolkit-comes-to-a-pico-near-you", "title": "Voice Control Toolkit Comes to a Pico Near You", "summary": "Moonshine AI has released a voice control toolkit that runs locally on a Raspberry Pi Pico 2 W, using 3.6 MiB of the 4 MiB FLASH and 468 KiB SRAM. The system integrates voice activity detection, SpellingCNN speech-to-text supporting up to 50 tokens, and neural text-to-speech in a tight memory footprint.", "body_md": "Voice-controlled appliances are nothing new. What might be new, however, is [Moonshine AI] running it all [locally on a Raspberry Pi Pico 2 W](https://github.com/moonshine-ai/moonshine/tree/main/micro)!\n\nThe voice interface is roughly divided into three parts: voice activity detection, SpellingCNN speech-to-text and a neural text to speech. The speech to text supports up to 50 tokens, and can be re-trained to support any specific words you want. It runs a simple loop: detect voice activity, listen for (command) tokens, process them in C++, use the TTS to reply, and repeat.\n\nNow, to be fair, it *is* a bit of a squeeze: 3.6 MiB of the available 4 MiB FLASH and 468 KiB SRAM on a stock Pi Pico 2 board. It leaves you with just about enough space to write a small amount of extra software, but it’ll be a challenge to fit anything substantial. Still, fitting three different types of AI model needed to make this possible in such a space is quite impressive.", "url": "https://wpnews.pro/news/voice-control-toolkit-comes-to-a-pico-near-you", "canonical_source": "https://hackaday.com/2026/07/23/voice-control-toolkit-comes-to-a-pico-near-you/", "published_at": "2026-07-23 08:00:28+00:00", "updated_at": "2026-07-23 08:28:22.261175+00:00", "lang": "en", "topics": ["artificial-intelligence", "ai-products", "ai-tools"], "entities": ["Moonshine AI", "Raspberry Pi Pico 2 W", "SpellingCNN"], "alternates": {"html": "https://wpnews.pro/news/voice-control-toolkit-comes-to-a-pico-near-you", "markdown": "https://wpnews.pro/news/voice-control-toolkit-comes-to-a-pico-near-you.md", "text": "https://wpnews.pro/news/voice-control-toolkit-comes-to-a-pico-near-you.txt", "jsonld": "https://wpnews.pro/news/voice-control-toolkit-comes-to-a-pico-near-you.jsonld"}}