Tanaka Masayuki's PCMFlow722 library enables (half-duplex) two-way real-time HD voice over ESP-NOW on ESP32 boards with a speaker and a microphone, ...
A Raspberry Pi can do a lot, but adding an ESP32 gives it the physical reach that small hardware projects often need.
Adafruit has announced the availability of the AirLift Bitsy add-on ESP32 WiFi co-processor priced at $14.95. This innovative daughterboard allows you to use the powerful ESP32 as a WiFi co-processor, ...