Part comparison

Arduino Mega 2560 Rev3 vs Arduino Nano ESP32

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

22 shared specs7 scored

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ArduinoArduino Mega 2560 Rev3A000067

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ArduinoArduino Nano ESP32ABX00092

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Directional spec summary

Counts across 7 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

22 specifications compared side by side.

Arduino Mega 2560 Rev3 / Arduino Nano ESP32
Compare bySpecification	AArduinoArduino Mega 2560 Rev3	BArduinoArduino Nano ESP32
Electrical1
Logic voltageUse-dependent	5 V	3.3 V
Control & communication21
Board kind	Main controller	Main controller
Board architecture	Microcontroller board	Microcontroller board
Primary applicationUse-dependent	education;robotics;motion_control	education;robotics;wireless_embedded_control
Processor vendorUse-dependent	Microchip	Espressif;u-blox
ProcessorUse-dependent	ATmega2560	NORA-W106 (ESP32-S3)
Processor architectureUse-dependent	AVR 8-bit	Xtensa LX7
Processor clock	16 MHz	240 MHz224 MHz higher
RAM	0.0078 MB	8 MB7.9922 MB higher
Flash	0.25 MB	16 MB15.75 MB higher
Open-source hardware	Yes	Yes
Open-source firmware	Yes	Yes
SDK available	Yes	Yes
Firmware updatable	Yes	Yes
UART interfaces	43 higher	1
I2C interfaces	1	21 higher
USB interfaces	1	1
GPIO	5440 higher	14
Communication interfacesUse-dependent	UART;I2C;SPI;USB	Wi-Fi;Bluetooth;UART;I2C;USB
CertificationsUse-dependent	CE;RoHS	ISED/IC;UKCA;CE;FCC;RoHS;RCM;MIC
Compute board kind	microcontroller	microcontroller
MicrocontrollerUse-dependent	ATmega2560	NORA-W106 (ESP32-S3)

AArduinoArduino Mega 2560 Rev3

BArduinoArduino Nano ESP32

Electrical1

Logic voltageUse-dependent

Part A5 V

Part B3.3 V

Control & communication21

Board kind

Part AMain controller

Part BMain controller

Board architecture

Part AMicrocontroller board

Part BMicrocontroller board

Primary applicationUse-dependent

Part Aeducation;robotics;motion_control

Part Beducation;robotics;wireless_embedded_control

Processor vendorUse-dependent

Part AMicrochip

Part BEspressif;u-blox

ProcessorUse-dependent

Part AATmega2560

Part BNORA-W106 (ESP32-S3)

Processor architectureUse-dependent

Part AAVR 8-bit

Part BXtensa LX7

Processor clock

Part A16 MHz

Part B240 MHz224 MHz higher

RAM

Part A0.0078 MB

Part B8 MB7.9922 MB higher

Flash

Part A0.25 MB

Part B16 MB15.75 MB higher

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 A43 higher

Part B1

I2C interfaces

Part A1

Part B21 higher

USB interfaces

Part A1

Part B1

GPIO

Part A5440 higher

Part B14

Communication interfacesUse-dependent

Part AUART;I2C;SPI;USB

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

CertificationsUse-dependent

Part ACE;RoHS

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

Compute board kind

Part Amicrocontroller

Part Bmicrocontroller

MicrocontrollerUse-dependent

Part AATmega2560

Part BNORA-W106 (ESP32-S3)

Product sources

Product sources used by this comparison

Arduino Mega 2560 Rev3Open source ↗

Arduino Nano ESP32Open source ↗