Part comparison

Arduino UNO R4 WiFi vs Espressif ESP32-C3-DevKitC-02

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

17 shared specs4 scored

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ArduinoArduino UNO R4 WiFiABX00087

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EspressifEspressif ESP32-C3-DevKitC-02ESP32-C3-DevKitC-02

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Directional spec summary

Counts across 4 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

17 specifications compared side by side.

Arduino UNO R4 WiFi / Espressif ESP32-C3-DevKitC-02
Compare bySpecification	AArduinoArduino UNO R4 WiFi	BEspressifEspressif ESP32-C3-DevKitC-02
Electrical1
Logic voltageUse-dependent	5 V	3.3 V
Control & communication16
Board kind	Main controller	Main controller
Board architecture	Microcontroller board	Microcontroller board
Primary applicationUse-dependent	education;robotics;wireless_embedded_control	robotics;embedded_control
Processor vendorUse-dependent	Renesas;Espressif	Espressif
ProcessorUse-dependent	RA4M1;ESP32-S3	ESP32-C3-WROOM-02;ESP32-C3-WROOM-02U
Processor architectureUse-dependent	ARM Cortex-M4;Xtensa LX7	RISC-V
Processor cores	32 higher	1
Processor clock	240 MHz80 MHz higher	160 MHz
Flash	0.25 MB	4 MB3.75 MB higher
SDK available	Yes	Yes
Firmware updatable	Yes	Yes
USB interfaces	1	1
Wireless interfacesUse-dependent	Wi-Fi;Bluetooth	Wi-Fi;Bluetooth LE
Communication interfacesUse-dependent	Wi-Fi;Bluetooth;UART;I2C;SPI;USB	Wi-Fi;Bluetooth LE;USB;GPIO
Compute board kind	microcontroller	microcontroller
MicrocontrollerUse-dependent	RA4M1;ESP32-S3	ESP32-C3-WROOM-02;ESP32-C3-WROOM-02U

AArduinoArduino UNO R4 WiFi

BEspressifEspressif ESP32-C3-DevKitC-02

Electrical1

Logic voltageUse-dependent

Part A5 V

Part B3.3 V

Control & communication16

Board kind

Part AMain controller

Part BMain controller

Board architecture

Part AMicrocontroller board

Part BMicrocontroller board

Primary applicationUse-dependent

Part Aeducation;robotics;wireless_embedded_control

Part Brobotics;embedded_control

Processor vendorUse-dependent

Part ARenesas;Espressif

Part BEspressif

ProcessorUse-dependent

Part ARA4M1;ESP32-S3

Part BESP32-C3-WROOM-02;ESP32-C3-WROOM-02U

Processor architectureUse-dependent

Part AARM Cortex-M4;Xtensa LX7

Part BRISC-V

Processor cores

Part A32 higher

Part B1

Processor clock

Part A240 MHz80 MHz higher

Part B160 MHz

Flash

Part A0.25 MB

Part B4 MB3.75 MB higher

SDK available

Part AYes

Part BYes

Firmware updatable

Part AYes

Part BYes

USB interfaces

Part A1

Part B1

Wireless interfacesUse-dependent

Part AWi-Fi;Bluetooth

Part BWi-Fi;Bluetooth LE

Communication interfacesUse-dependent

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

Part BWi-Fi;Bluetooth LE;USB;GPIO

Compute board kind

Part Amicrocontroller

Part Bmicrocontroller

MicrocontrollerUse-dependent

Part ARA4M1;ESP32-S3

Part BESP32-C3-WROOM-02;ESP32-C3-WROOM-02U

Product sources

Product sources used by this comparison

Arduino UNO R4 WiFiOpen source ↗

Espressif ESP32-C3-DevKitC-02Open source ↗