ESP32 GPIO Breakout Board :
USB and type c : 5V power supply input interface
DCpower supply interface: 6.5-16V power input port
Jump interface select voltage is 5V or 3.3V
Reference links of ESP32 at below:
https://github.com/espressif/arduino-esp32
https://github.com/Nicholas3388/LuaNode
https://github.com/nodemcu/nodemcu-firmware/tree/dev-esp32
Tips: When you download the program to ESP32, you need to press the IOO button for 1-2 seconds.
Package included: 3 X ESP-WROOM-32 ESP-32S development board 3 x ESP32 30p breakout board