Part comparison

Arduino Nano ESP32 vs Arduino UNO R4 WiFi

A side-by-side comparison of source-backed specifications within the same subcategory.

24 shared specs8 scored

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ArduinoArduino Nano ESP32ABX00092

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ArduinoArduino UNO R4 WiFiABX00087

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Directional spec summary

Counts across 8 numeric specifications with a clear higher-or-lower direction.

Part A leads

Tied

Part B leads

These are metric-by-metric differences, not an overall performance score. Check the values below.

Specifications

24 specifications compared side by side.

Arduino Nano ESP32 / Arduino UNO R4 WiFi
Compare bySpecification	AArduinoArduino Nano ESP32	BArduinoArduino UNO R4 WiFi
Electrical1
Logic voltageUse-dependent	3.3 V	5 V
Control & communication23
Board kind	Main controller	Main controller
Board architecture	Microcontroller board	Microcontroller board
Primary application	education;robotics;wireless_embedded_control	education;robotics;wireless_embedded_control
Processor vendorUse-dependent	Espressif;u-blox	Renesas;Espressif
ProcessorUse-dependent	NORA-W106 (ESP32-S3)	RA4M1;ESP32-S3
Processor architectureUse-dependent	Xtensa LX7	ARM Cortex-M4;Xtensa LX7
Processor cores	2	31 higher
Processor clock	240 MHz	240 MHz
RAM	8 MB7.4805 MB higher	0.5195 MB
Flash	16 MB15.75 MB higher	0.25 MB
Open-source hardware	Yes	Yes
Open-source firmware	Yes	Yes
SDK available	Yes	Yes
Firmware updatable	Yes	Yes
UART interfaces	1	1
I2C interfaces	21 higher	1
USB interfaces	1	1
GPIO	14	14
Wireless interfaces	Wi-Fi;Bluetooth	Wi-Fi;Bluetooth
Communication interfacesUse-dependent	Wi-Fi;Bluetooth;UART;I2C;USB	Wi-Fi;Bluetooth;UART;I2C;SPI;USB
CertificationsUse-dependent	ISED/IC;UKCA;CE;FCC;RoHS;RCM;MIC	UKCA;FCC;REACH;CE;RCM;MIC;ISED/IC;KC
Compute board kind	microcontroller	microcontroller
MicrocontrollerUse-dependent	NORA-W106 (ESP32-S3)	RA4M1;ESP32-S3

AArduinoArduino Nano ESP32

BArduinoArduino UNO R4 WiFi

Electrical1

Logic voltageUse-dependent

Part A3.3 V

Part B5 V

Control & communication23

Board kind

Part AMain controller

Part BMain controller

Board architecture

Part AMicrocontroller board

Part BMicrocontroller board

Primary application

Part Aeducation;robotics;wireless_embedded_control

Part Beducation;robotics;wireless_embedded_control

Processor vendorUse-dependent

Part AEspressif;u-blox

Part BRenesas;Espressif

ProcessorUse-dependent

Part ANORA-W106 (ESP32-S3)

Part BRA4M1;ESP32-S3

Processor architectureUse-dependent

Part AXtensa LX7

Part BARM Cortex-M4;Xtensa LX7

Processor cores

Part A2

Part B31 higher

Processor clock

Part A240 MHz

Part B240 MHz

RAM

Part A8 MB7.4805 MB higher

Part B0.5195 MB

Flash

Part A16 MB15.75 MB higher

Part B0.25 MB

Open-source hardware

Part AYes

Part BYes

Open-source firmware

Part AYes

Part BYes

SDK available

Part AYes

Part BYes

Firmware updatable

Part AYes

Part BYes

UART interfaces

Part A1

Part B1

I2C interfaces

Part A21 higher

Part B1

USB interfaces

Part A1

Part B1

GPIO

Part A14

Part B14

Wireless interfaces

Part AWi-Fi;Bluetooth

Part BWi-Fi;Bluetooth

Communication interfacesUse-dependent

Part AWi-Fi;Bluetooth;UART;I2C;USB

Part BWi-Fi;Bluetooth;UART;I2C;SPI;USB

CertificationsUse-dependent

Part AISED/IC;UKCA;CE;FCC;RoHS;RCM;MIC

Part BUKCA;FCC;REACH;CE;RCM;MIC;ISED/IC;KC

Compute board kind

Part Amicrocontroller

Part Bmicrocontroller

MicrocontrollerUse-dependent

Part ANORA-W106 (ESP32-S3)

Part BRA4M1;ESP32-S3

Product sources

Product sources used by this comparison

Arduino Nano ESP32Open source ↗

Arduino UNO R4 WiFiOpen source ↗