The Arduino Nano R3 Compatible Board with CH340 chip is a compact microcontroller board with soldered header pins, ATmega168 or ATmega328 MCU, 14 digital I/O pins, 8 analog inputs, 6 PWM outputs, and 16MHz clock speed. The nano r3 ch340 board connects to a PC via Mini USB and uses the CH340 USB-to-serial chip to handle programming communication. The ATmega328 variant gives 32KB flash and 2KB SRAM, while the ATmega168 variant provides 16KB flash and 1KB SRAM — confirm the variant before purchase based on your project memory requirements.
The key feature of this arduino nano r3 ch340 soldered version is the pre-soldered header pins. Unsoldered Nano variants ship with loose pins requiring soldering before use — this soldered version plugs directly into a standard breadboard row without any preparation, making it ideal for beginners and rapid prototyping sessions. The CH340 chip requires a one-time driver installation on Windows and macOS, after which the board appears as a standard COM port in the Arduino IDE. The non-obvious advantage of the CH340 over the original FTDI chip used in early Nano boards is cost — CH340-based Nano boards are significantly more affordable without any functional difference in programming speed or reliability for standard Arduino sketch uploads.
The arduino nano microcontroller is the most widely used compact Arduino form factor in India for breadboard-based sensor projects, compact robotics builds, and wearable electronics prototypes. The arduino nano projects community covers line followers, Bluetooth gloves, mini weather stations, and motor driver modules.
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Check out The Arduino L293D Motor Driver Shield for Projects
Features:
- Pre-soldered headers plug directly into breadboard without soldering preparation
- CH340 USB chip enables serial programming without FTDI driver requirement
- ATmega328 variant provides 32KB flash for larger sketch storage capacity
- 14 digital pins with 6 PWM outputs for motor and LED control
- 8 analog inputs cover full multi-sensor project ADC channel requirements
Technical Specifications:
| Specification | Details |
|---|---|
| Microcontroller | ATmega168 or ATmega328 |
| Operating Voltage | 5 V |
| Input Voltage | 7 V – 12 V |
| Digital I/O Pins | 14 Pins (6 PWM) |
| Analog I/O Pins | 8 Pins |
| Clock Speed | 16 MHz |
| Flash Memory | 16 KB (ATmega168) / 32 KB (ATmega328) |
| SRAM | 1 KB (ATmega168) / 2 KB (ATmega328) |
| EEPROM | 512 Bytes (ATmega168) / 1 KB (ATmega328) |
 Applications:
- Arduino Nano R3 Compatible Board used for breadboard sensor project builds
- Line follower robot uses nano r3 ch340 board as compact controller
- College arduino nano projects uses CH340 nano for mini weather station
- Wearable electronics prototype uses arduino nano microcontroller for compact builds
- Motor driver module uses arduino nano r3 soldered board for PWM control
Package Includes:
- 1 x Arduino Nano R3 Compatible Board














Vivek Bhat –
SMD design provides durability and compact size, making it ideal for space-constrained electronics applications and prototypes
Pallavi Jaiswal –
No complaints at all
Kartikeya Rao –
Received this board with no damage and secure packaging, online payment was easy and expert guidance helped during my engineering project setup.
Harsh Agnihotri –
Reliable Nano development board
Manish Sharma –
Arduino Nano R3 compatible board with easy programming interface works smoothly for engineering and embedded system projects
Nandita Soni –
Exceeded expectations completely