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Affordable Uno-Compatible Board for Learning, Prototyping, and Project Builds
The Uno R3 CH340 Arduino Compatible is a practical, budget-friendly development board built around the ATmega328P. It gives you the familiar Uno form factor, standard pin layout, and wide compatibility with beginner-friendly tutorials, shields, sensors, and modules—making it a solid choice for students, makers, and prototype builds.
This version uses the CH340 USB-to-serial chip, which helps keep the board affordable while still working with the Arduino IDE. It’s great for basic coding lessons, sensor projects, robotics, automation, and electronics experiments.
Good to know: Some computers detect CH340 boards automatically, while others may require a driver installation first.
You’ll also need a USB Type-B cable to connect the board to your computer.
Why makers choose this board
- Beginner-friendly: Ideal for learning programming, circuits, and microcontroller basics.
- Budget-conscious: A more affordable Uno-compatible option for school, hobby, or workshop use.
- ATmega328P-based: A proven microcontroller for countless beginner and intermediate projects.
- Arduino IDE compatible: Easy to program using the familiar Arduino software environment.
- Shield-friendly layout: Works with many Uno-style accessories and expansion boards.
- Flexible power options: Can be powered by USB or an external supply.
What you can build
This board is a strong starting point for projects like LED effects, traffic light simulations, sensor monitoring systems, servo control, alarm systems, line-following robots, obstacle-avoidance robots, automatic plant watering, and classroom prototype demos.
Starter bundles
Pair this Uno-compatible board with a breadboard, jumper wires, LEDs, resistors, push buttons, and basic sensors to build your first working circuits faster. You can also explore more options through our Arduino Compatible and Sensors selections.
Recommended add-ons
Common upgrades include an I2C LCD, ultrasonic sensor, servo motor, relay module, and a breadboard power module for easier testing and prototyping.
Technical specifications
| Microcontroller | ATmega328P |
|---|---|
| Operating Voltage | 5V |
| Input Voltage (Recommended) | 7V–12V |
| Input Voltage (Limit) | 6V–20V |
| Digital I/O Pins | 14 |
| PWM Pins | 6 |
| Analog Inputs | 6 |
| DC Current per I/O Pin | 20 mA |
| 3.3V Pin Current | 50 mA |
| Flash Memory | 32 KB (0.5 KB used by bootloader) |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Clock Speed | 16 MHz |
| USB Connector | USB Type-B |
| USB-to-Serial Chip | CH340 |
| Board Size | 68.6 mm × 53.4 mm |
Pinout & power notes
The board follows the familiar Uno-style pin arrangement with digital pins, analog inputs, PWM-capable pins, power pins, and an ICSP header. You can power it through USB while programming, or use an external supply within the recommended input range for standalone projects.
What’s in the box
1 × Uno R3 CH340 Arduino Compatible development board
We ship across the Philippines, so whether you’re building a school project, a first Arduino setup, or a quick prototype, this board is a dependable and practical place to start.
- Does this work with the Arduino IDE? Yes. It is compatible with the Arduino IDE and is commonly used for the same kinds of beginner and hobby projects as a standard Uno-style board.
- What is the difference between CH340 and the official Uno USB chip? The main difference is the USB-to-serial interface chip. This version uses CH340, which is a lower-cost alternative and may require a driver on some computers.
- Is this good for beginners? Yes. It is one of the most beginner-friendly boards for learning coding, electronics, sensors, and simple automation projects.
- Can I use Uno shields with this board? In most cases, yes. It follows the common Uno R3-style layout used by many shields and accessories.
- What cable do I need? You need a USB Type-B cable for programming and power through your computer’s USB port.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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