---
product_id: 246978303
title: "KEYESTUDIO V4.0 Development Board for Arduino UNO R3 | USB Cable Included"
brand: "keyestudio"
price: "€ 22.33"
currency: EUR
in_stock: true
reviews_count: 13
category: "Keyestudio"
url: https://www.desertcart.gr/products/246978303-keyestudio-v4-0-development-board-for-arduino-uno-r3-usb
store_origin: GR
region: Greece
---

# 16 MHz clock speed CP2102 USB serial chip Socketed ATMEGA328P-PU KEYESTUDIO V4.0 Development Board for Arduino UNO R3 | USB Cable Included

**Brand:** keyestudio
**Price:** € 22.33
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your Arduino game with KEYESTUDIO V4.0 — where pro stability meets DIY freedom!

## Quick Answers

- **What is this?** KEYESTUDIO V4.0 Development Board for Arduino UNO R3 | USB Cable Included by keyestudio
- **How much does it cost?** € 22.33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/246978303-keyestudio-v4-0-development-board-for-arduino-uno-r3-usb)

## Best For

- keyestudio enthusiasts

## Why This Product

- Trusted keyestudio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pin-Perfect Clarity:** High-contrast yellow silk-screen on black PCB means no more squinting—pin labels are crystal clear for pros and beginners alike.
- • **Versatile I/O Arsenal:** 14 digital I/O pins (6 PWM) plus 6 analog inputs unlock endless creative possibilities for robotics, IoT, and smart devices.
- • **Education & Maker-Ready:** Backed by detailed online Wiki, wiring diagrams, and code examples—ideal for classrooms, prototyping, and DIY innovation.
- • **Plug & Play USB Stability:** Advanced CP2102 chip ensures hassle-free, ultra-reliable USB connectivity on Windows & Mac—no driver drama.
- • **Modular Microcontroller Magic:** Socketed ATMEGA328P-PU lets you swap or upgrade your brain without soldering—future-proof your projects effortlessly.

## Overview

The KEYESTUDIO V4.0 Development Board is a fully Arduino UNO R3 compatible microcontroller platform featuring a 16 MHz ATMEGA328P-PU chip in a socketed DIP design for easy upgrades. It integrates the advanced CP2102 USB-to-serial chip for fast, reliable connectivity and supports 14 digital I/O pins (6 PWM) plus 6 analog inputs. Its distinctive yellow-on-black PCB offers crystal-clear pin labeling, making it perfect for education, robotics, and maker projects. USB cable included for immediate plug-and-play use on Windows and Mac systems.

## Description

The KEYESTUDIO V4.0 Development Board offers a fully compatible alternative for Arduino UNO R3 projects, featuring an updated CP2102 USB serial chip for reliable connectivity. This microcontroller board is equipped with 14 digital input/output pins, including 6 that support PWM outputs, along with 6 analog inputs for versatile project applications. At its core, a 16 MHz quartz crystal ensures precise timing operations. The board includes essential components such as a USB connection, power jack, ICSP headers, and a reset button for convenient programming and operation. With 32 KB of flash memory powered by the ATMEGA328P-PU chip (0.5 KB reserved for bootloader), it provides ample storage for your code. The board can be powered either through the included USB cable connected to a computer or via an AC to DC adapter through the power jack. The distinctive yellow-black design features high-contrast yellow silk screen printing on a black mask, making pin labels clearly visible and easy to read during project development and troubleshooting.

Review: Arduino Uno R3, on the cheap - Initially the Keyestudio board was not recognized on WIN10. After checking some of the reviews, and updating the CP2102 driver, it worked perfectly. Although the pin descriptions are written on the board, I would prefer if the pin descriptions were also written on the headers as well. All-in-all a great development board at a great price.
Review: Good Clone at a great price. - I saw this for $9 and figured why not. I figured worst case, I could at least use the 'Atmega328p' which run about $13 to $15 for two anyway. It works great! I ended up using it to prototype my design instead of my Arduino Mega and when I was done, I actually loaded it with the "Arduino as ISP" sketch and used it to flash two breadboarded AVRs. This comes nicely packaged, a box inside a box, and includes an 18" USB cable. I also think the Black/Yellow is a nice change from the usual blue or all black PCBs. The top layer screening isn't as good as the original Arduinos or more expensive clones but you can still read the lettering.

## Features

- Superior Stability with CP2102 USB Serial Chip — KEYESTUDIO V4.0 features the advanced CP2102 USB-to-serial chip, delivering faster and more reliable. Fully compatible with Arduino IDE, this board ensures seamless driver installation on Windows and Mac systems. No more driver headaches — plug, play, and start creating instantly. USB cable included.
- True ATMEGA328P-PU with Socketed DIP Design — KEYESTUDIO board features the socketed ATMEGA328P-PU microcontroller. You can easily replace or upgrade the chip without soldering! Packed with 32KB Flash (0.5KB for bootloader), 2KB SRAM, 1KB EEPROM, and running at 16MHz — everything you need for Arduino UNO R3 projects.
- Crystal-Clear Pin Labels — Our cool yellow silk-screen on black PCB makes pin identification effortless. Whether you're a beginner or a pro, you'll appreciate the clearly printed labels on every pin header — no more squinting or guessing.
- 14 Digital I/O + 6 PWM + 6 Analog Inputs — Unleash your creativity with 14 digital input/output pins (6 with PWM capability), 6 analog inputs, ICSP header, and built-in reset button. Power it via USB, DC power jack (7-12V recommended), or Vin/GND pins. Compatible with a vast ecosystem of Arduino shields, sensors, and modules.
- Perfect for Education, Robotics, and DIY Makers — Whether you're teaching coding in the classroom, building your first robot, or prototyping your next smart home device, KEYESTUDIO V4.0 is your ideal choice. Backed by detailed online Wiki with wiring diagrams, code examples, and troubleshooting guides.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08H1RB61B |
| Additional Features | Updated USB Serial Chip for Arduino Compatibility |
| Aspect Ratio | 16:9 |
| Best Sellers Rank | #2,770 in Single Board Computers (Computers & Accessories) |
| Brand | KEYESTUDIO |
| Built-In Media | V4.0 board |
| CPU Model | 5X86 |
| CPU Model Number | no |
| Cache Memory Installed Size | 1 GB |
| Cache Size | 1 GB |
| Color | Yellow |
| Compatible Devices | Arduino Uno R3 Compatible Devices |
| Connectivity Technology | USB |
| Cooling Method | Passive |
| Customer Reviews | 4.5 out of 5 stars 179 Reviews |
| Display Resolution Maximum | 800x600 |
| Display Type | Analog |
| Graphics Card Description | Dedicated |
| Graphics Card Interface | Integrated |
| Graphics Coprocessor | Integrated Graphics |
| Graphics Description | Dedicated |
| Hardware Interface | USB |
| Human-Interface Input | Buttons |
| Item Weight | 0.07 kg |
| Keyboard Description | NO |
| Language | English |
| Manufacturer | keyes |
| Memory Clock Speed | 16 MHz |
| Memory Speed | 16 MHz |
| Memory Storage Capacity | 32 KB |
| Model Name | KEYESTUDIO V4.0 Development Board |
| Model Number | KE-0017 |
| Model Year | 2010 |
| Native Resolution | 800 × 600 |
| Number of Component Outputs | 1 |
| Operating System | Windows 10 |
| Personal Computer Design Type | All in One |
| Power Plug Type | Type C |
| Processor Brand | no |
| Processor Count | 1 |
| Processor Series | 5X86 |
| Processor Socket | no |
| RAM Memory Technology | no |
| RAM Type | DDR DRAM |
| Resolution | 800 x 600 |
| Screen Size | 2 inches |
| Speaker Type | External |
| Specific Uses For Product | Education |
| Specification Met | [Inferred: Some specifications met] |
| Style Name | Minimalist |
| Total Expansion Slots Quantity | 20 |
| Total Usb Ports | 1 |
| Unit Count | 1 Count |
| Video Output | USB (with adapter) |
| Video Output Interface | USB (with adapter) |
| Video Processor | via |
| Wireless Compability | Infrared |
| Wireless Technology | Infrared |

## Product Details

- **Brand:** KEYESTUDIO
- **CPU Model:** 5X86
- **Cache Size:** 1 GB
- **Graphics Card Description:** Dedicated
- **Graphics Coprocessor:** Integrated Graphics
- **Memory Storage Capacity:** 32 KB
- **Operating System:** Windows 10
- **Personal computer design type:** All in One
- **Screen Size:** 2 Inches
- **Specific Uses For Product:** Education

## Images

![KEYESTUDIO V4.0 Development Board for Arduino UNO R3 | USB Cable Included - Image 1](https://m.media-amazon.com/images/I/61hr-NGYk4L.jpg)
![KEYESTUDIO V4.0 Development Board for Arduino UNO R3 | USB Cable Included - Image 2](https://m.media-amazon.com/images/I/71rjt7sLYgL.jpg)
![KEYESTUDIO V4.0 Development Board for Arduino UNO R3 | USB Cable Included - Image 3](https://m.media-amazon.com/images/I/51b9XQA1jdL.jpg)
![KEYESTUDIO V4.0 Development Board for Arduino UNO R3 | USB Cable Included - Image 4](https://m.media-amazon.com/images/I/61i8oz7-oSL.jpg)
![KEYESTUDIO V4.0 Development Board for Arduino UNO R3 | USB Cable Included - Image 5](https://m.media-amazon.com/images/I/61BvGgw0JML.jpg)

## Questions & Answers

**Q: Does it support jtag? Ejtag?**
A: Nope.  Not much JTAG support in the lower-end Arduino world.

**Q: What drivers do I need to install to get this to work?**
A: Install the open source Arduino Development Environment software on your computer. These board are 100% compatible with the standard Arduino UNO R3. You should be able to compile and upload your software to this board with no additional drivers being needed. Silicon Labs does have the USB to UART drivers available on their website just in case you run into an issue with the USB communications. This board worked just fine on my computer, but I already use Silicon Labs USB bridges for my other work. I may already have had their drivers installed so I did not see any issues.

**Q: where i can boy motor shield and Led dot matrix 8 * 16 for KS0470 model?**
A: Amazon.  Search “Arduino Uno Motor Shield”. Again Amazon and search “MAX7219”.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Arduino Uno R3, on the cheap
*by J***K on December 4, 2024*

Initially the Keyestudio board was not recognized on WIN10. After checking some of the reviews, and updating the CP2102 driver, it worked perfectly. Although the pin descriptions are written on the board, I would prefer if the pin descriptions were also written on the headers as well. All-in-all a great development board at a great price.

### ⭐⭐⭐⭐⭐ Good Clone at a great price.
*by E***E on July 14, 2024*

I saw this for $9 and figured why not. I figured worst case, I could at least use the 'Atmega328p' which run about $13 to $15 for two anyway. It works great! I ended up using it to prototype my design instead of my Arduino Mega and when I was done, I actually loaded it with the "Arduino as ISP" sketch and used it to flash two breadboarded AVRs. This comes nicely packaged, a box inside a box, and includes an 18" USB cable. I also think the Black/Yellow is a nice change from the usual blue or all black PCBs. The top layer screening isn't as good as the original Arduinos or more expensive clones but you can still read the lettering.

### ⭐⭐⭐⭐ Cheap and easy
*by N***O on January 19, 2026*

I bought this while ago great for testing and prototyping added it to my Mr.Cupcake from fnaf. 3D printed the shell added a servo shield and some servos BAHMM Awesome eye movement! granted the memory doesn't store a lot a movement as it is a micro processer but will do great as a cheat alternative!

## Frequently Bought Together

- KEYESTUDIO V4.0 Development Board for Arduino UNO R3 with USB Cable
- ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects
- ELEGOO UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-08-13*