Espressif Systems ESP8684-DevKitC-02C-N4 Development Kits The ESP8684-DevKitC-02 is an entry-level development board based on ESP8684-WROOM-02C, ESP8684-WROOM-02UC. This board integrates complete Wi-Fi and Bluetooth LE functions. Most of the I/O pins on the module are broken out to the pin headers on both s