Third-Party Arduino UNO (ATmega328P with CH340 Chip)

Key Features:

• ATmega328P microcontroller running at 16 MHz with 32 KB flash, 2 KB SRAM, and 1 KB EEPROM — the heart of the classic Arduino platform.
 

• CH340G USB-to-UART interface — enables plug-and-play connection to computers across Windows, macOS, and Linux.
 

• USB-B cable included — ready for use.
 

• UNO R3 shield-compatible layout with standard 14 digital I/O pins (6 PWM) and 6 analog inputs.
 

• 5 V logic level with onboard 5 V and 3.3 V regulators for versatility with sensors and modules.
 

• Reset and power LEDs for quick operational feedback and debugging.
 

• Fully supported in Arduino IDE, PlatformIO, and AVR toolchains out of the box.
 

 

 

Specifications:

• Microcontroller: ATmega328P @ 16 MHz
 

• Flash Memory: 32 KB (bootloader occupies ~0.5–1 KB)
 

• SRAM: 2 KB
 

• EEPROM: 1 KB
 

• USB Interface: CH340 USB-to-UART converter
 

• I/O Pins: 14 digital (D0–D13), 6 analog (A0–A5)
 

• PWM Outputs: 6
 

• Analog Inputs (ADC): 6 × 10-bit (0–5 V range)
 

• Operating Voltage (logic): 5 V
 

• Input Voltage (VIN): 7–12 V via barrel jack or USB 5 V
 

• Power Consumption: ~20–50 mA (typical, without shields/peripherals)
 

• Dimensions: UNO R3 form factor (approx 68.6 × 53.4 mm)
 

 

 

Applications:

• Classic Arduino projects with robust ecosystem support (LEDs, sensors, motor drivers, displays).
 

• Teaching and learning embedded programming with standard libraries and shields.
 

• Prototyping circuit designs, robotics, home automation, and DIY electronics.
 

• Replacing genuine UNO boards in existing projects without code or wiring changes.
 

• Sensor modules, relay systems, and small-scale IoT gateways (with additional modules)
 

DATASHEET:  UNO R3 
Reminder: This board is BASED off the Arduino UNO, some minor differences MAY be present.