How I Built an AI Assistant on My Wrist for Under...

The Idea What if you could have Claude AI on your wrist — not on a $400 Apple Watch, but on a $4 microcontroller? I built exactly that: a wrist-mounted AI assistant using an ESP32-S3, a tiny OLED screen, a microphone, and the Claude API. Total parts cost: under $15 USD. It can: Answer questions via text or voice Translate between 5 languages in real-time Monitor your heart rate and give health insights Run any custom AI behavior via system prompts The Architecture The key insight: Claude doesn't