A
Anonymous
Apr 03, 2026
Rating: 5/5
Great value kit
The enclosure protects the board well. Good quality pins and soldering.
Description
UNO-R3 mainboard development control board featuring CH340G and ATmega328P microcontroller with case, compatible with Arduino
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Development Boards & Control Boards |
| Origin | - |
| Microcontroller | ATmega328P |
| USB Interface Chip | CH340G |
| Operating Voltage | 5V |
| Recommended Input Voltage | 7-12V |
| Digital I/O Pins | 14 |
| PWM Pins | 6 |
| Analog Input Pins | 6 |
| Flash Memory | 32 KB |
| SRAM | 2 KB |
| Clock Speed | 16 MHz |
5 reviews
A
Anonymous
Feb 19, 2026
Rating: 5/5
Perfect for beginners
This board works exactly like the original. The CH340G driver was easy to install.
A
Anonymous
Feb 01, 2026
Rating: 5/5
Fast shipping
Arrived quickly and well packaged. The board is responsive and stable.
A
Anonymous
Jan 28, 2026
Rating: 5/5
Reliable control board
Using this for a student project. No issues with connectivity or power.
A
Anonymous
Jan 24, 2026
Rating: 4/5
Good but needs drivers
Board works great once you install the CH340 drivers. Just be aware of that step.
5 FAQ
Q: Does the enclosure have holes for mounting?
A: Yes, the enclosure includes pre-drilled holes for standard mounting screws.
Q: Is this compatible with Mac OS?
A: Yes, it is compatible. You will need to install the CH340 USB driver.
Q: Can I power this with a 9V battery?
A: Yes, you can connect a 9V battery to the barrel jack or Vin pin.
Q: Is the pinout identical to the official Arduino Uno?
A: Yes, the pinout is fully compatible with the standard Arduino Uno R3 layout.
Q: Where can I download the CH340 driver?
A: You can find the driver link in the product description or on our support page.
![[Youxin Electronics] Soil Moisture Meter Detection Module, Soil Moisture Sensor for Intelligent Robot Cars](https://www.gosteppe.com/cache/medium/product/3877/legacy-main-eca7a3fa750966e5dca86bbf.webp)
![[Puzhong Brand Store] 51 Microcontroller Learning Board Development Board Jiangxie Tech STC89C52 DIY Kit](https://www.gosteppe.com/cache/medium/product/1885/legacy-main-0474e8371f211cc54ab452b5.webp)
![[Corrosion-Resistant] DFRobot Capacitive Soil Moisture Sensor Module Dry/Wet Detection](https://www.gosteppe.com/cache/medium/product/3259/legacy-main-2f0d3454b36b32391d263648.webp)
![[Shenzhen Best Seller] Premium Wearable Negative Ion Air Purifier - Neck-Hanging Portable Electronic Mask](https://www.gosteppe.com/cache/small/product/268987/legacy-main-5f71c8070119587e6427efe9.webp)
![Haisen [Exclusive Purchase Link] Livestream Link for New Arrivals and Clearance - Incense Sticks, Coil Incense, Agarwood, Sandalwood, Powder, Burners](https://www.gosteppe.com/cache/small/product/268968/legacy-main-4bd453bbd9b19100c4fd925a.webp)
