ESP32 NodeMCU WLAN Development Dev Kit C WiFi Bluetooth Board WROOM32 Espressif
NodeMCU is an open source IoT platform. The ESP32 series employs a Tenscillica Xtensa LX6 microprocessor in both dual-core and single-core variations, with a clock rate of up to 240 MHz and 512 kilobytes of SRAM.