Build your child their very own Node.js Frozen bot
summary
Builds a physical toy using Node.js, Node Robotics frameworks and an Arduino: an voice-activated Elsa bot that hears keywords, records a short WAV, sends it to Microsoft Cognitive Services for speech-to-text, and triggers an MP3 shield with an SD card of five Let It Go snippets chosen at random. Johnny-Five proved inadequate for that shield so serialport talks to a custom Arduino sketch; the prototype has live demos and plays snippets successfully once the correct sketch and API key are loaded.
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