# UNO R3 Arduino compatible development board, AtMega328p, CH340G, MiniUSB

- Page: https://sigmanortec.ro/en/uno-r3-arduino-compatible-development-board-atmega328p-ch340g-miniusb
- Price: 30.40 RON
- Availability: Out of stock
- Reference: R-33616 · EAN: 5942016753257
- Category: Mechatronics and IoT > Development Board > Arduino Compatible Boards
- Package (shipping data): 0.024 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:33 (Europe/Bucharest)

## Description

Arduino compatible development board for rapid prototyping and educational projects, based on ATmega328P with MiniUSB interface and CH340G USB controller. Offers automatic USB or DC power supply, 14 digital pins with PWM and 6 analog inputs, works with most Arduino libraries and shields. Includes male pin header.
The development board is compatible with Arduino. Mini USB connection interface.
Arduino is an open-source processing platform.
The Uno R3 development board is a version of the Uno with a new and improved MiniUSB interface.
Expansion slot with support for 3.3V, RESET pin and automatic selection system for USB or DC power source.
Uno is compatible from a code and format perspective with other older versions of Arduino, so all old libraries and modules will work without any problem.
The board may be incompatible with the latest version of the CH340 driver (2023). Download the driver from the Download section.
Specifications:
Microcontroller ATmega328 p
Chip: CH340G
Operating voltage 5V
Input voltage 7-10V (9V recommended)
14 digital input/output pins (with PWM support)
6 analog inputs
Current per pin 40 mA
Flash memory 32 KB
SRAM 2KB
EEPROM 1 KB
Clock speed 16 MHz
The Uno R3 also offers an improved USB connection and the fact that this model comes with a MiniUSB connection (just like the Nano).
The package also includes a pin bar.
YOU CAN ORDER A MAXIMUM OF 4 PIECES PER ORDER. FOR LARGER QUANTITIES, PLEASE USE THE CONTACT PAGE.