Arduino Nano R3 Compatible Board – CH340G
This compact Arduino Nano-compatible board is based on the ATmega328P-AU microcontroller and includes USB programming support. Its small form factor is suitable for breadboard-based prototyping.
Specifications from the supplier reference
| Microcontroller | ATmega328P-AU |
|---|---|
| Operating voltage | 5 V |
| Input voltage | 7–12 V |
| Flash memory | 32 KB (2 KB used by bootloader) |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Clock speed | 16 MHz |
| Digital I/O | 22 listed by supplier |
| PWM pins | 6 |
| Analog inputs | 8 listed in supplier description/specifications |
| Interfaces | USART, SPI and I²C |
Applications
- Breadboard-friendly Arduino projects
- Sensor and actuator interfacing
- Compact robotics and embedded prototypes
Pin counts and board layout can vary among compatible Nano versions. Verify the silkscreen and board documentation before wiring.

