Manufacturing the ESP32 Feather! Nestled at the end of this Feather board is the massive ESP32 WiFi module. This small and inexpensive device is powerful enough to handle such demanding tasks as voice encoding, music streaming and MP3 decoding. The module contains a dual-core ESP32 chip, 4 MB of SPI Flash, tuned antenna, and all the passives you need to take advantage of this powerful processor. The ESP32 has both WiFi and Bluetooth Classic/LE support, which makes it perfect for just about any wireless or Internet-connected project.