About this item

The Nano R3 compatible with Arduino (soldered, without USB cable) is a compact, breadboard-friendly microcontroller board built around the ATmega328 (Nano R3) paired with a cost-efficient CH340 USB-to-serial interface. It mirrors the core functionality of the Arduino Uno while fitting snugly on breadboards and tight project enclosures. This board lacks a DC power jack but supports flexible power options: via Mini-USB, an unregulated 6–20V input (pin 30), or a regulated 5V input (pin 27), with automatic source selection. Measuring just ~43×18mm, it offers 14 digital I/O (including 6 PWM channels), 8 analog inputs, a 16MHz clock, and 32kB flash memory with 2kB SRAM and 1kB EEPROM. The board comes pre-loaded with a bootloader and features an ICSP header, manual reset button, and LEDs for power, TX, RX, and “L” indicator. With 0.1-inch pin spacing and a mini-B USB interface (cable not included), it’s perfect for compact, cost-effective development. In short, this soldered Nano R3 clone delivers full Arduino capabilities in a compact, versatile, and budget-friendly form factor—ideal for makers, hobbyists, and embedded applications.