SKU: SBCD-0335
📋 GST Invoice Available

Nano R3 Development Board w/ CH340, Mini-USB (Unsoldered)

₹170.00 (Inclusive of all taxes)
Out of Stock

The Nano R3 development board, featuring an ATmega328P-AU MCU and a cost-effective CH340 USB-to-serial converter, offers the functionality of an Arduino Uno in a compact, breadboard-friendly form factor. It includes a mini-USB port for programming and power, making it ideal for embedded projects requiring a small footprint.

Features

  • Compact Nano R3 development board based on Atmel ATmega328P-AU MCU.
  • Integrates a CH340 USB-to-serial chip for cost-effective communication via mini-USB.
  • Features 14 digital I/O pins (6 PWM) and 8 analog inputs, operating at 5V logic.
  • Standard 0.1″ DIP spacing for direct breadboard compatibility (unsoldered version).
  • Flexible power options including mini-USB, unregulated 6-20V, or regulated 5V external supply.

Out of stock

Description

The Generic Nano R3 development board, equipped with the ATmega328P-AU microcontroller, provides a powerful and compact alternative to larger Arduino boards like the Uno. Its smaller footprint makes it highly suitable for projects where space is a constraint, while retaining core functionalities. This version utilizes a CH340 USB-to-serial converter, offering an economical solution for USB communication and programming compared to older FTDI-based designs.

Powering the Nano R3 is versatile, supporting input via its mini-USB port, an unregulated external supply ranging from 6-20V connected to pin 30, or a regulated 5V external supply via pin 27. The board intelligently selects the highest available voltage source. It comes pre-installed with an old bootloader and supports ISP downloading, facilitating easy program uploads through the Arduino IDE once the necessary CH340 drivers are installed. The unsoldered headers allow for custom integration into breadboards or PCBs.

Key Features

  • Utilizes Atmel ATmega328P-AU microcontroller for robust processing.
  • Equipped with CH340 USB-to-serial chip for reliable data communication.
  • Pre-installed with an old bootloader, supporting USB download and power.
  • Offers flexible power options: mini-USB, external 5-12V DC, or 9V battery support.
  • Includes 14 digital I/O pins (6 with PWM capability) and 8 analog input ports.
  • Features 1 pair of TTL level serial transceiver ports (RX/TX).
  • Automatic reset during program download for seamless development workflow.
  • Onboard LEDs for power status (blue), TX/RX activity (green/red), and user feedback (orange 'L').
  • Standard 0.1” spacing DIP pins for easy integration with breadboards.
  • Manual reset switch for convenient program restart.

Applications

  • Embedded systems prototyping and development.
  • Educational projects for beginners in electronics and programming.
  • Robotics control and automation.
  • IoT sensor nodes and data logging.
  • Wearable electronics and compact device integration.

Technical Specifications

Item TypeDevelopment Board (Unsoldered)
Board TypeNano R3
MCUAtmel ATmega328P-AU
USB-Serial ChipCH340
Operating Voltage (Logic Level)5V DC
Input Voltage (Recommended)7-12V DC
Digital I/O Pins14 (6 PWM)
Analog Input Pins8 (A0-A7)
DC Current per I/O Pin40mA
Flash Memory32KB (ATmega328P)
SRAM2KB
EEPROM1KB
Clock Speed16MHz
Input PortMini-USB
ArchitectureAVR

Frequently Asked Questions

What power options does the Nano R3 (CH340) support?

The Nano R3 can be powered via its mini-USB port, an unregulated 6-20V external power supply connected to pin 30 (VIN), or a regulated 5V external supply on pin 27 (+5V). The board automatically selects the highest voltage source for operational stability.

What is the significance of the CH340 chip on this Nano board?

The CH340 chip serves as a cost-effective USB-to-serial converter, enabling communication and programming of the ATmega328P-AU MCU via the mini-USB port. It replaces the more expensive FTDI chips found on older Nano versions, making the board more accessible.

How do I program this Nano R3 board?

You can program the Nano R3 using the Arduino IDE. First, ensure you have the correct CH340 drivers installed on your computer. Then, connect the board via a mini-USB cable, select "Arduino Nano" as the board, and "ATmega328P (Old Bootloader)" as the processor in the IDE, then upload your sketch.

What are the key differences between this Nano R3 and an Arduino Uno?

The Nano R3 offers identical functionality to the Uno but in a significantly smaller form factor. It uses a mini-USB port instead of a standard USB-B, lacks a DC power jack, and typically features breadboard-friendly pin headers, making it more suitable for compact embedded designs.

Is this board compatible with standard Arduino sketches and libraries?

Yes, this Nano R3 board is fully compatible with most standard Arduino sketches and libraries, given it uses the ATmega328P-AU microcontroller, which is the same as the Uno. Ensure you select the "Arduino Nano" board with the "ATmega328P (Old Bootloader)" option in the Arduino IDE for proper compilation and upload.

Package Includes

  • 1 x Nano Board R3 with CH340 Chip Mini-USB Port (Unsoldered)

Additional Information

Weight 0.01 kg
Dimensions 4.5 × 1.8 × 0.5 cm