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Notes before your order: This item requires programming environment (esp-idf) and fundamental knowledge of ESP32. It is not difficult but SSID and password are hard-coded and this board will NOT work like "just delivered, and open package and connect power supply" We can buy smart speaker from Amazon and else and if you just want to get smart speaker, another commercial product is far better choice for you. This board is not just for"getting smart speaker" but also "getting knowledge and experience of ESP32". Again, if you don't need any new and interesting experience of ESP32 nor programming experience, you can quickly order amazon dot at amazon.com .
Very Tiny Alexa experiment board by ESP32-PICO-D4. The board includes ESP32-PICO-D4, CP2102 USB-UART, MAX98357 I2S DAC, WS2812 NeoPixel LED, Lipo charger and glue logic for programming.
Since the wonderful implementation by MrBuddyCasino's ESP32 Alexa, I am a bit addicted to this great application, stand-alone Alexa experiment by ESP32. For this purpose, I've made another board, ESP32-ADB-Edge, whose design is originated from ESP32-ADB which is very suitable for web radio and Bluetooth speaker with high-resolution DAC. However, the needs for the Alexa experiment and web radio is apparently different. Stereo high-resolution DAC is not needed for Alexa and also OLED is useless for Alexa. This time I completely re-designed the board specifically for Alexa experiment.
The original source of ESP32-Alexa uses "GPIO 17" for I2S MEMS microphone connection, however, GPIO 17 is pre-occupied by internal SPI flash connection of ESP32-PICO-D4. Please replace all of the files here with the original source for this board operation.
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From childhood, I've loved making electrical things by soldering for some amateur radio related thing.
After graduated certain university and taking Ph. D, I did have a GaAs MMIC design working for 60 GHz system
but it's a bit long time ago.
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