AAElectronics’ LocalDot is an open-source replacement mainboard that converts a 3rd-generation Amazon Echo Dot into a local voice assistant compatible with Home Assistant. The board replaces one of the two original PCBs while reusing the existing microphones, speaker, buttons, LEDs, and enclosure, so the device works without relying on Amazon’s cloud services. The board combines an ESP32-S3 for WiFi connectivity and device control with an ESP32-P4 for audio processing. It supports the original four-microphone array with beamforming, on-device wake-word detection, and local voice commands through Home Assistant. Installation requires no soldering or enclosure modifications, and the device still uses the original Echo Dot power adapter. LocalDot specifications: Compatibility – 3rd-generation Amazon Echo Dot (Donut and Crumpet variants; Clock version not tested) SoC ESP32-S3 – Wi-Fi connectivity and device control ESP32-P4 – Dedicated audio processing Audio TAS5805 audio amplifier for the original speaker On-device wake-word detection Beamforming support Reuses the original […]
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Read more here: https://www.cnx-software.com/2026/11/11/localdot-an-open-source-replacement-pcb-for-3rd-gen-echo-dot-with-home-assistant-support/
