ADIY UNO R3 ATMEGA328P CH340C Microcontroller Board Compatible
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The ADIY UNO R3 ATmega328P CH340C Microcontroller Board is a cost-effective, fully compatible version of the classic Arduino Uno R3, designed for learners, hobbyists, and embedded system developers. This board replaces the traditional ATmega16U2 USB-to-serial converter with the highly stable CH340C chip, offering reliable USB connectivity at a significantly lower price point.
Built around the ATmega328P microcontroller, the ADIY UNO features 14 digital I/O pins (6 of which support PWM), 6 analog inputs, and a 16 MHz ceramic resonator, making it ideal for most Arduino-based projects. It includes a USB-B connector, ICSP header, onboard LED (pin 13), and reset button, with robust support for USB or external power supply options.
Perfect for beginners and developers alike, this board has all the essential features to begin prototyping—just plug it into your PC via USB or use an external power supply, and you’re ready to go.
Applications
• Arduino-based learning kits
• Embedded systems development
• Sensor interfacing and automation projects
• Robotics and hardware prototyping
• STEM and education kits
Features
• ATmega328P microcontroller with 16 MHz clock
• CH340C USB-serial interface (driver supported on Windows/Linux)
• Fully Arduino IDE compatible
• 14 digital I/O pins, 6 PWM, 6 analog inputs
• Flash memory: 32 KB with bootloader
• Includes power jack, USB-B connector, and ICSP header
• Plug-and-play via USB or external 7–12V power supply
Specifications
| Specification | Details |
|---|---|
| Microcontroller | ATmega328P |
| Operating Voltage | 5V |
| USB Interface Chip | CH340C |
| USB Connector | USB-B |
| Input Voltage (Recommended) | 7–12V |
| Input Voltage (Limit) | 6–20V |
| Digital I/O Pins | 14 (6 PWM capable) |
| Analog Input Pins | 6 |
| PWM Channels | 6 |
| DC Current per I/O Pin | 20 mA |
| DC Current for 3.3V Pin | 50 mA |
| Flash Memory | 32 KB (0.5 KB used by bootloader) |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Clock Speed | 16 MHz |
| LED_BUILTIN Pin | 13 |
| Dimensions (L x W) | 68.58 mm × 53.34 mm |
Package Includes
1 x ADIY UNO R3 SMD ATmega328P CH340C Development Board