Core & Control
– Main Chip: ATmega328P single-core AVR, 16MHz clock
– Memory: 2KB SRAM + 32KB Flash + 1KB EEPROM
Interface & Power
– Power Input: 5V Micro USB / 7–12V barrel jack
– Digital I/O Pins: 14 digital pins (6 PWM output), 6 analog input pins
– Communication: UART, I2C, SPI, onboard CH340 serial chip
Features
– No built-in Wi-Fi/Bluetooth; wireless modules required separately
– Simple programming, massive open-source library support
– Ideal for basic sensor, motor, beginner electronic projects
