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Description
ARDUINO UNO REV 4 WIFIThe Arduino UNO R4 WiFi Merges the Renesas RA4M1 Microprocessor with the ESPRESSIF ESP32 S3, Creating an all in one tool for makers with enhanced processing power and a diverse array of new peripherals. With its built in WI FI and Bluetooth capabilities Arduino UNO R4 WiFi Overview The Arduino UNO R4 WiFi combines the processing power and exciting new peripherals of the RA4M1 microcontroller from Renesas with the wireless connectivity power of the
The Arduino UNO R4 WiFi Merges the Renesas RA4M1 Microprocessor with the ESPRESSIF ESP32-S3, Creating an all-in-one tool for makers with enhanced processing power and a diverse array of new peripherals. With its built-in WI-FI® and Bluetooth® capabilities
Arduino UNO R4 WiFi
Overview
The Arduino UNO R4 WiFi combines the processing power and exciting new peripherals of the RA4M1 microcontroller from Renesas with the wireless connectivity power of the ESP32-S3 from Espressif. On top of this, the UNO R4 WiFi offers an on-board 12x8 LED matrix, Qwiic connector, VRTC, and OFF pin, covering all potential needs makers will have for their next project.
With the UNO R4 WiFi, you can easily upgrade your project and add wireless connectivity to expand the reach of your current setup. If this is your first project, this board has everything you need to spark your creativity.
Features
- Hardware compatibility with UNO form factor: The UNO R4 WiFi maintains the same form factor, pinout, and 5 V operating voltage as its predecessor, the UNO R3, ensuring a seamless transition for existing shields and projects.
- Expanded memory and faster clock: The UNO R4 WiFi boasts increased memory and a faster clock speed, enabling more precise calculations and effortless handling of complex projects.
- Extra on-board peripherals: The UNO R4 WiFi introduces a range of on-board peripherals, including a 12-bit DAC, CAN BUS, and OP AMP, providing expanded capabilities and design flexibility.
- Extended 24 V tolerance: The UNO R4 WiFi supports a wider input voltage range, allowing seamless integration with motors, LED strips, and other actuators using a single power source.
- HID support: With built-in HID support, the UNO R4 WiFi can simulate a mouse or keyboard when connected to a computer via USB, making it easy to send keystrokes and mouse movements.
- Wi-Fi® and Bluetooth®: The UNO R4 WiFi hosts an ESP32-S3 module, enabling makers to add wireless connectivity to their projects. Combined with the Arduino IoT Cloud, makers can monitor and control their projects remotely.
- Qwiic connector: The UNO R4 WiFi features a Qwiic I2C connector, allowing easy connection to nodes from the extensive Qwiic ecosystem. Adapter cables also enable compatibility with sensors and actuators based on other connectors.
- Support for battery-powered RTC: The UNO R4 WiFi includes additional pins, including an "OFF" pin to turn off the board and a "VRTC" pin to keep the internal Real-Time Clock powered and running.
- LED matrix: The UNO R4 WiFi incorporates a bright 12x8 red LED matrix, ideal for creative projects with animations or plotting sensor data, eliminating the need for additional hardware.
- Diagnostics for runtime errors: The UNO R4 WiFi includes an error-catching mechanism that detects runtime crashes and provides detailed explanations and hints about the code line causing the crash.
Specifications
| Microcontroller | Renesas RA4M1 (Arm® Cortex®-M4) | |
| USB | USB-C® | Programming Port |
| Pins | Digital I/O Pins | 14 |
| Pins | Analog input pins | 6 |
| DAC | 1 | |
| PWM pins | 6 | |
| Communication | UART | Yes, 1x |
| I2C | Yes, 1x | |
| SPI | Yes, 1x | |
| CAN | Yes 1 CAN Bus | |
| Power | Circuit operating voltage | 5 V (ESP32-S3 is 3.3 V) |
| Input voltage (VIN) | 6-24 V | |
| DC Current per I/O Pin | 8 mA | |
| Clock speed | Main core | 48 MHz |
| ESP32-S3 | up to 240 MHz | |
| Memory | RA4M1 | 256 kB Flash, 32 kB RAM |
| ESP32-S3 | 384 kB ROM, 512 kB SRAM | |
| Dimensions | Width | 68.85 mm |
| Length | 53.34 mm | |
Additional Information
| Device | UNO R4 WiFi |
Shipping Notes
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Exchange/Return Notes
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4.5 ★★★★★
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Product Reviews
★★★★★ 5
Work well
Love the price and love the product. They work well and help apply my foundation and sunscreen.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
★★★★★ 5
Great for sensitive skin and people who sweat in the face.
I absolutely love this product My daughter introduced me to it. My skin is very dry however, I sweat so much in my sinus area and my skin is very sensitive. Most products are too heavy when I put them on and they make me sweat more or I feel like I need to get a papertowel etc and wipe it off. None of that with this. It's light, it moisturizes my dry areas and it does not leave a greasy or heavy feeling. It dosent make me sweat at all. Best of all it only takes a little. I use about a dime size and that works great. I only need to use once a day. I recommend this product.
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Reviewed in the United States on June 6, 2024
★★★★★ 5
Great for oily, acne prone and sensitive skin.. thank god!!!
I have oily, acne prone, sensitive skin. So boy oh boy is it difficult to find a moisturizer or really any face product in general that works and is affordable. This is light yet deeply hydrating, does not make me greasy, make my skin sting or break me out. In fact my skin feels less textural and more hydrated looking. I wish it was a bigger bottle but I’m surprised as to how little I need to use since it spreads so easily. (Only need a dime sized or a bit smaller) Great for under eye too so no need for eye cream. Will order more!
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Reviewed in the United States on December 2, 2020
★★★★★ 4
Great product, just not enough of it
Loved the product, kept my face looking healthy and smooth. It’s very lightweight which I appreciated. Didn’t notice a scent either which is also a plus. The only thing I was a little surprised by was the size. It was the size of one of those Clinique moisturizer samples they give you as a bonus when you buy a bunch of their makeup. I ran out pretty quickly even though I didn’t use excessive amounts and I don’t have a giant face. Other than that, I’d say this is a worthwhile addition to my skincare regimen.
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Reviewed in the United States on September 22, 2019
★★★★★ 5
Love This Moisturizer!
I have been using Simple products for as long as I can remember. I love Simple products because they work really well for my dry sensitive skin. I've always used their Replenishing Rich Moisturizer, but I was developing some dry patches on my face that would not go away and I was looking for something more to help with that. When I saw that Simple had come out with the Water Boost Hydrating Gel Cream Face Moisturizer and saw that it was made for dry dehydrated skin I bought it right away. A few minutes after I applied it to my face I could really notice a difference! My skin felt soft and smooth, especially where the dry patches were, and it even looked better too! I've been using it now for about a week and a half and my dry patches have gone away! The only downfall is that it comes in a small tube. I wish they would come out with a bigger size, but other than that I absolutely love this moisturizer and would recommend it to anyone with dry/dehydrated/sensitive skin! I also use this product along with the Simple Water Boost Micellar Face wash, and at night I use the Simple Water Boost Skin Quench Sleeping Cream.
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Reviewed in the United States on May 17, 2020