Features： 1.It has 14 digital IO pins, of which pins 3, 5, 6, 9, 10, 11 can be used as PWM output, and pins A0~A5 are analog input pins. 2.1 16Mhz crystal oscillator; 1 Micro Usb interface; 1 ICSP interface; 1 reset button and 1 function button; 10-bit LED running light driven by MOS tube; 2 RGB lights with WS2812 chip; one without Source buzzer, a buzzer switch; 500MA self-recovery fuse 3.It contains all the structures that make up the microcontroller, and only needs a MICRO usb data cable to connect to the computer, or use a battery to start. 4. The pin layout is the same as the original arduino, compatible with all expansion boards. What are the improvements compared to the original arduino? 1. Added a function button connected to the D2 pin; 2. Added 2 RGB lights with chips, which can display any color through the program; 3. Add a passive buzzer, can play music through the program, and design a buzzer switch, you can turn off the buzzer at any time; 4. Added 10 LED marquees driven by MOS tubes, which avoids the problem of insufficient output current of the IO port of the single-chip microcomputer, and can directly drive a small DC motor through the IO port. 5. Added 3.3V power indicator 6. Change the USB-B type interface to MICRO-USB interface, which is more convenient to use 7. Upgrade the main control chip to ATMEGA328P-AU 8. More personalized pattern printing, highlighting individuality. 9. Add 500ma self-recovery fuse, short circuit automatically disconnect the circuit, avoid component damage. 10. Change the plug-in pin to the patch pin to avoid short circuit of the development board contact conductor, which is safer.

• 【Added 10 LED marquees driven by MOS tubes】which avoids the problem of insufficient output current of the IO port of the single-chip microcomputer, and can directly drive a small DC motor through the IO port.
• 【EASY TO USE】Change the original USB-B type interface to MICRO-USB interface, which is more convenient to use.

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