The diymore DM Strong Series Pro Mini Nano V3.0 ATmega328P Microcontroller Module with CH340 / CH340C USB‑to‑serial chip is a compact and powerful development board designed for Arduino-compatible projects. It is ideal for DIY electronics, prototyping, learning, and embedded applications where space and cost are critical. 1. Upgraded Hardware Features: Enhanced design for improved flexibility and ease of use;2. Fast Bus Access: Integrated SPI, COM, and IIC interrupts simplify bus operation; 3. Versatile I/O Ports: Equipped with 14 digital I/O ports, including 6 PWM outputs and 6 analog inputs;4. Plug and Play Programming: Built-in bootloader, easy code upload via USB connection to a computer; 5. Flexible Programming Options: Supports STK500 protocol, ICSP interface enables various programming methods; Microcontroller Chip: ATmega328P; Digital I/O Pins: 14, 6 of which support PWM output; Analog Input Pins: 6; Communication Interfaces: USB, ICSP (for ISP programming), SPI, IIC, UART; Clock Speed: 16MHz crystal oscillator; Power Supply: USB or external power supply; Color: Black Material: Plastic+Metal Package Contents: 1*CH340C Module,1*USB cable