ESP32 comes in the nodemcu structure we are familiar with, but it also offers bluetooth support.
Exciting for IOT applications, this ESP-WROOM-32 model has internal antenna, RF balun, power amplifier, low-noise amplifier, filters and power management unit.
It has 2.4 GHz dual-mode Wi-Fi and TSMC 40nm low power technology Bluetooth chips.

Specifications:

• High price/performance ratio.
• Suitable for embedded projects with its small dimensions
• It is quite powerful with LWIP protocol support and Freertos.
• Supports AP,STA and AP+STA modes
• Lua program supports

 
Steps:

•     Download and install the Arduino IDE.
•     Open https://github.com/espressif/arduino-esp32, install according to the explanation in the installation part.
•     Install the CP2102 driver for the serial communication chip.
•     Install the product on your computer with a USB micro cable.
•     Copy the test program below to the arduino IDE.
•     Select ESP32 Dev Module from Tools/Boards
•     Select the port where you plug the ESP32 into.
•     Press the BOOT button on the ESP32. Upload it on the Arduino IDE. It takes about 15 seconds. It is recommended to keep the BOOT button pressed during this time.
•     Open the serial terminal and select baud 9600 (normally 9600)
•     It will type the word Hello every second.

Useful Links:

• http://esp32.net/
• https://github.com/espressif/esptool
• https://github.com/esp32