# Arduino Uno Rev4 WiFi Development Board

**URL:** https://aio.lv/en/product--arduino-abx00087--10621691
**Data updated:** 2026-06-04 16:17 (EEST)
**Category:** Electronics Accessories
**Manufacturer:** Arduino
**Manufacturer code:** ABX00087
**EAN:** 7630049204591
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 42.99 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 35.53 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--arduino-abx00087--10621691

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

The Arduino Uno Rev4 WiFi is a powerful development board featuring an ESP32-S3 module for wireless connectivity and a Renesas RA4M1 microcontroller. It supports 5V operation, integrated Wi-Fi and Bluetooth Low Energy, and a 12x8 LED matrix. Ideal for IoT projects, automation, and advanced embedded systems, this board maintains compatibility with existing Uno shields while offering enhanced processing power and memory for complex applications.

## Long description

The Arduino Uno Rev4 WiFi is a high-performance development board designed to bridge the gap between traditional hobbyist electronics and advanced IoT connectivity. Built around the Renesas RA4M1 microcontroller and featuring an integrated ESP32-S3 module, this board provides robust processing capabilities alongside seamless wireless communication. It maintains the classic Uno form factor, ensuring compatibility with a wide range of existing shields and accessories while significantly upgrading the internal hardware to handle more demanding computational tasks.
Advantages
This development board offers a significant leap in performance compared to previous generations, thanks to its 32-bit architecture and increased memory capacity. The integration of Wi-Fi and Bluetooth Low Energy directly on the board simplifies the design of connected devices, removing the need for external communication modules. Furthermore, the inclusion of a 12x8 addressable LED matrix provides an immediate visual feedback mechanism for debugging or user interface design, while the 5V operating voltage ensures compatibility with standard industrial and educational components.
Suitable for
Internet of Things (IoT) sensor nodes
Home automation and smart device prototyping
Advanced robotics and embedded control systems
Educational projects requiring wireless connectivity
Wearable technology development
This board may not be suitable for projects that require extremely low power consumption for long-term battery operation, as the ESP32-S3 and the LED matrix can consume significant current. Additionally, it might be overkill for simple logic tasks that could be handled by basic 8-bit microcontrollers.
Key specifications
Microcontroller: Renesas RA4M1 (Arm Cortex-M4)
Wireless Module: ESP32-S3 for Wi-Fi and Bluetooth Low Energy
Operating Voltage: 5V
LED Matrix: Integrated 12x8 red LED display
Memory: Increased SRAM and Flash compared to Uno R3
Compatibility: Standard Uno form factor and shield support
To use the Arduino Uno Rev4 WiFi, connect the board to your computer via a USB-C cable and configure the development environment by installing the necessary board support packages. Once the drivers are installed, you can upload your code directly to the microcontroller. The integrated wireless module can be programmed to handle network requests, allowing the board to act as a web server or a client for cloud-based data logging.
What to consider before purchase
Verify that your existing shields are compatible with the 5V logic level of this board.
Ensure your project requirements align with the capabilities of the ESP32-S3 module.
Check if your power supply can provide sufficient current for both the microcontroller and the LED matrix.
For optimal performance and stability, always ensure that your firmware is updated to the latest version provided by the official Arduino IDE and that you are using a high-quality USB cable for data transmission.

## FAQ

### How much does the Arduino Uno Rev4 WiFi Development Board cost, and is it available for purchase?

The price is 42.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 39 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 24.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Arduino products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Arduino service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10621691/54092392_large.webp