Nano R3 CH340 Development Board – Arduino Compatible Soldered
Nano R3 CH340 Development Board – Arduino Compatible, Pre-Soldered
The Nano R3 CH340 is a compact, breadboard-friendly development board based on the ATmega328P microcontroller. It features a CH340 USB-to-serial converter and comes with header pins pre-soldered, so you can start prototyping immediately. Ideal for space-constrained projects, wearable tech, and embedded systems.
Key Specifications
| Specification | Value |
|---|---|
| Microcontroller | ATmega328P |
| Operating Voltage | 5V |
| Digital I/O Pins | 14 (6 PWM) |
| Analog Input Pins | 8 |
| Flash Memory | 32 KB (2 KB bootloader) |
| Clock Speed | 16 MHz |
What You Can Build With This
- Mini weather station with DHT11 sensor and OLED display
- USB-powered LED mood light with addressable WS2812B strips
- Bluetooth-controlled robot using HC-05 module and motor driver
- Low-cost data logger that writes sensor values to microSD card
Compatibility
The Nano R3 is fully compatible with the Arduino IDE and most libraries written for Arduino Nano. It works seamlessly with common 5V sensors, actuators, and modules. For 3.3V devices, use a logic level converter.
Wiring Notes
The board uses a micro USB port for power and programming. When connecting external power, ensure the voltage is within 7-12V to the VIN pin, and avoid drawing more than 40mA per I/O pin to prevent damage.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino IDE?
Yes, the CH340 driver installs automatically on Windows 10/11, and the board appears as a standard Arduino Nano in the IDE. Select 'Arduino Nano' and 'ATmega328P (Old Bootloader)' for reliable uploads.
Can I power it directly via USB?
Yes, the micro USB port provides 5V to the board. It can also be powered through the VIN pin with 7-12V, or via the 5V pin if regulated.
What is the maximum current the 5V pin can supply?
The onboard 5V regulator can handle up to 800mA, but total current should be limited to avoid overheating. If you need more, use an external regulated 5V supply.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items