Demo Applications
1.GPIO port2.Serial port3.Analog-digital converter4.Digital-Analog Converter5.EEPROM (Electrically Erasable Programmable read only memory)6.Gyro IMU（MPU6050）7.Infrared remote control8.PWM(Pulse Width Modulation)9.Servo(under construction)10.Classic Bluetooth serial port SPP11.Bluetooth low energy (BLE) serial port pass-through12.File system SPIFFS13.Add hardware partition configuration option in Arduino IDE14.Play MP315.The usage of Wi-Fi OTA(Over-The-Air)