ESP32 is a series of low cost, low power system on a chip microcontrollerswith integrated Wi-Fiand dual-mode Bluetooth. The ESP32 series employs a Tensilica Xtensa LX6microprocessor in both dual-core and single-core variations and includes in-built antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power management modules. ESP32 is created and developed by Espressif Systems, a Shanghai-based Chinese company, and is manufactured by TSMCusing their 40 nm process.It is a successor to the ESP8266 microcontroller.
ESP32 WIFI-BT-BLE MCU MODULE / ESP-WROOM-32:
Top and Side View of ESP-WROOM-32
ESP-WROOM-32 has 39 pins. See pin definitions below :
//Note: Pins SCK/CLK, SDO/SD0, SDI/SD1, SHD/SD2, SWP/SD3 and SCS/CMD, namely, GPIO6 to GPIO11 are connectedto the integrated SPI flash integrated on ESP-WROOM-32 and are not recommended for other uses.//
//Note: The MTDI should be kept at low electric level//
- Huuuuge amount of information on http://www.esp32.com/ community forum!