The CH340 Soldered Nano Board R3 is a compact, cost-effective version of the Arduino Nano, designed to offer the same functionality as the Arduino Uno but in a much smaller footprint. This board is equipped with the CH340 USB-to-Serial chip, which makes it more affordable compared to the older versions of the Nano that used the FTDI USB-Serial chip.
Based on the ATmega328P microcontroller, the Nano provides similar performance to the Arduino Uno, but in a smaller, breadboard-friendly package. It lacks a DC power jack and instead uses a Mini-B USB cable for power and communication.
 
Features:
1 pair of TTL-level serial transceiver ports (RX/TX)
Powered by Atmel ATmega328P-AU microcontroller
Bootloader pre-installed for easy programming
Supports USB download and power
External DC power supply support (5V–12V)
Can be powered by a 9V battery
Supports ISP download for direct programming
Automatic reset during program download
Power OK indicator with a blue LED
Green (TX), Red (RX), and Orange (L) status LEDs
+5V to AREF jumper for custom voltage reference
Auto-sensing/switching power input for convenience
Uses a Mini-B USB connection for programming and serial communication (cable not included)
ICSP header for direct program download
Breadboard-friendly with 0.1” spacing DIP
Manual reset switch for easy control
 
Package Includes:
1 × Nano CH340 Chip Development Board (Soldered, No USB Cable) – Arduino Compatible