Fully compatible with UNO R3 interface
New color row of needle seat, yellow for the digital mouth, blue for the analog port, red for the power interface, easy to identify
All 3P interfaces are compatible with 3P DuPont sensor cable colors to prevent insertion errors
All gold-plated pins, materials used sophisticated, electrical performance and stability
Excellent PCB design, beautiful and generous
A variety of special interface design, compatible with my shop a variety of electronic building blocks, easy to use

6 analog interfaces
14 digital interfaces
1 I2C interface (A4 SDA, A5 SCL)
1 SD card expansion interface
1 TTL serial port
1 3-channel PWM full-color LED interface (D9, D10, D11)
10P parallel LCD interface
6P595 serial module expansion port
External reset interface
3.3v, 5V power interface
VIN external power input
Servo auxiliary power supply port
Reset button