The Arduino Nano 168 is a miniature version of the Arduino UNO, featuring the ATmega168 microcontroller in a compact DIP-style layout. This version uses the CH340G USB-to-serial chip and a Mini USB connector for programming and communication.

Specifications

• Microcontroller: ATmega168
• USB Interface: CH340G USB-to-serial bridge
• USB Connector: Mini USB (Type-B)
• Operating Voltage: 5 V
• Input Voltage (VIN): 7 V – 9 V
• Digital I/O Pins: 14 (of which 6 support PWM)
• Analog Input Pins: 8 (A0–A7)
• DC Current per I/O Pin: 40 mA max
• Flash Memory: 16 KB (0.5 KB used by bootloader)
• SRAM: 1 KB
• EEPROM: 512 B
• Clock Speed: 16 MHz
• Programming Support: Arduino IDE, PlatformIO
• Bootloader: Optiboot (standard Arduino Nano)

Features

• Compact DIP-style form factor for breadboard use
• CH340G USB interface for reliable serial communication
• Compatible with Arduino UNO sketches and libraries (within memory limits)
• Ideal for embedded control, sensor interfacing, and automation
• Common use cases:
  - STEM kits and classroom projects
  - Robotics and motor control
  - Sensor data logging
  - Serial-controlled relays, displays, and actuators