Arduino Nano 3.0 Compatible Controller — CH340 USB Driver, ATmega328P 16MHz, Mini / Micro / Type-C

A fully Arduino Nano 3.0 compatible microcontroller board based on the ATmega328P running at 16MHz, with CH340 USB-to-serial chip for USB connectivity. Available in Mini-USB, Micro-USB, and USB Type-C variants. Pin-compatible with the official Arduino Nano, supporting all Arduino Nano shields, breadboard layouts, and sketches. The CH340 driver provides reliable USB serial communication on Windows, macOS, and Linux without requiring additional driver installation on most modern operating systems.

Technical Specifications

Parameter	Value
MCU	ATmega328P (8-bit AVR)
Clock Speed	16MHz
Flash Memory	32KB (2KB bootloader)
SRAM	2KB
EEPROM	1KB
USB Chip	CH340 (USB-to-serial)
USB Connector	Mini-USB / Micro-USB / Type-C (select variant)
Digital I/O Pins	22 (14 digital + 8 analog as digital)
Analog Input Pins	8 (A0–A7, 10-bit ADC)
PWM Pins	6 (D3, D5, D6, D9, D10, D11)
Communication	UART, SPI, I²C
Operating Voltage	5V (3.3V available via onboard regulator)
Input Voltage	7–12V (VIN pin) or 5V (USB)
PCB Size	18 × 45mm (standard Nano footprint)
Certification	CE, RoHS

Pin Reference

Function	Pins
Digital I/O	D0–D13 (D0/D1 = UART TX/RX)
PWM Output	D3, D5, D6, D9, D10, D11
Analog Input	A0–A7 (10-bit, 0–5V)
SPI	D10 (SS), D11 (MOSI), D12 (MISO), D13 (SCK)
I²C	A4 (SDA), A5 (SCL)
UART	D0 (RX), D1 (TX)
Power	5V, 3.3V, GND, VIN (7–12V), RESET

Typical Applications

Breadboard Prototyping: The Nano’s DIP-compatible pin layout fits directly into a standard breadboard for rapid prototyping without soldering
Sensor Data Logger: Compact data logger for temperature, humidity, pressure, and motion sensors with SD card storage via SPI
Robot Controller: Compact motor driver controller for small robots, servo-based arms, and wheeled platforms
IoT Node: Pair with an ESP-01S or NRF24L01 module for wireless sensor node applications
LED Controller: PWM-based LED dimmer and WS2812B NeoPixel controller for lighting projects
Education: Ideal for Arduino programming education due to its small size, low cost, and full Arduino IDE compatibility

FAQ

Q: Do I need to install a CH340 driver?
A: On Windows 10/11, the CH340 driver is usually installed automatically. On older Windows versions or macOS, download the CH340 driver from the manufacturer website. Linux includes CH340 support in the kernel by default.

Q: Is this board compatible with the official Arduino Nano pinout?
A: Yes. This board is pin-compatible with the official Arduino Nano 3.0. All Arduino Nano shields, modules, and sketches are compatible without modification.