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Arduino UNO R4 WiFi review

A modern Uno pairing a Renesas RA4M1 with an ESP32-S3 for Wi-Fi and Bluetooth, plus USB-C, CAN, a 12-bit DAC and an LED matrix.

Value

About the price of an R3, with far more on board.

Connectors

Qwiic saves wiring.

Compatibility

Check older shield libraries.

Where it earns its place, and where it falls short

Strengths

  • Wireless in the Uno shape
  • Costs about the same as an R3
  • Rich features

Compromises

  • Some older shields differ
  • Two chips to understand
  • Costs more than ESP32 boards

Specifications

MCURenesas RA4M1 + ESP32-S3
WirelessWi-Fi, Bluetooth 5.0
ConnectorsUSB-C, CAN, Qwiic
Analog12-bit DAC, op amp
Display12 × 8 LED matrix
Amazon ASINB0C8V88Z9D
EAN7630049204591

Questions makers ask before buying

Does it have Wi-Fi?

Yes, through the ESP32-S3.

Does it have CAN?

Yes.

Our score

8.5/ 10

The new default Arduino.

This one against the other workshop machines

workshop machines from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.

Model Price MCU
Arduino UNO R4 WiFi $28 Renesas RA4M1 + ESP32-S3
Arduino Uno REV3 $28 ATmega328P, 16 MHz
Arduino Nano A000005 $26 ATmega328P
ELEGOO ESP-32 3-Pack $20 ESP32, dual core, 240 MHz

What sets the models apart, in workshop machines

  • If price decides: ELEGOO ESP-32 3-Pack, at $20.

What use this one answers, among workshop machines

A learner who wants wireless with Arduino support.

Sources

Specifications: the manufacturer sheet for maker machines and tools and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.

What we judge these workshop machines on

A price quoted in the text of a MakerVerdict page dates from the day that page was written; the live figure beside each product is fetched while you read and replaces it.