Arduino Comparison Chart: Boards & Modules

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Boards

Boards

	Arduino Uno Rev 3	Arduino Leonardo	Arduino 101

Microcontroller	ATmega328P	ATmega32u4	Intel Curie
Operating Voltage	5 V	5 V	3.3 V (5 V tolerant I/O)
Input Voltage (Recommended)	7-12 V	7-12 V	7-12 V
Input Voltage (Limit)	6-20 V	6-20 V	7-17 V
Digital (I/O) Pins	14 (4 for PWM Output)	20	14 (4 for PWM Output)
PWM Digital (I/O) Pins	6	7	4
Analog Input Pins	6	12	6
Analog Input Channels			4 of the Digital I/O pins
Analog Input Channels (multiplexed)			8
DC Current per I/O Pin	20 mA	40 mA	20 mA
DC Current for 3.3 V Pin	50 mA	50 mA
Flash Memory	32 KB (.5 KB for bootloader)	32 KB (4 KB for bootloader)	196 KB
SRAM	2 KB	2.5 KB	24 KB
EEPROM	1 KB	1 KB
Clock Speed	16 MHz	16 MHz	32 MHz
LED BUILTIN	13		13
Bluetooth			Bluetooth LE
Additional Features			6 axis accelerometer/gyro
Length	68.6 mm	68.6 mm	68.6 mm
Width	53.4 mm	53.3 mm	53.4 mm
Weight	25 g	20 g	34 g
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Pinouts, Schematics, CS Eagle Files, and More!

Arduino Uno Rev 3 Pinout, ATMega168/328 Pin Mapping, Schematics, EAGLE Files, and More!

Boards (Cont'd)

Boards (Continued)

	Arduino Robot	Arduino Esplora

Microcontroller	ATmega32u4	ATmega32u4
Operating Voltage	5 V	5 V
Input Voltage (Recommended)	5 V through flat cable
DC Current per I/O Pin	40 mA
Flash Memory	32 KB (4 KB for bootloader)	32 KB (4 KB for bootloader)
SRAM	2.5 KB
EEPROM	1 KB internal, 312 Kbit(12 C) external
Clock Speed	16 MHz	16 MHz
Additional Features	* Keypad - 5 Keys * Knob - potentiometer attached to analog pin * Full Color LCD - over SPI connection * SD Reader - for FAT16 formatted cards * Speaker - 8 Ohm * Digital Compass - deviation from North in degrees * I2C Soldering Ports - 2 * Prototyping Areas - 4
Length		164.04 mm
Width		60 mm
Radius	185 mm
Height	85 mm
Weight		53 g
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Modules

Modules

	Arduino Micro	Arduino Nano	Arduino Mini

Microcontroller	ATmega32u4	ATmega32u	ATmega32u
Operating Voltage	5 V	5 V	5 V
Input Voltage (Recommended)	7-12 V	7-12 V	7-9 V
Input Voltage (Limit)	6-20 V	7-12 V	7-9 V
Digital (I/O) Pins	20	22	14 (6 for PWM Output)
PWM Digital (I/O) Pins		6
PWM Channels	7
Analog Input Pins			8 (4 broken out onto pins)
Analog Input Channels	12
DC Current per I/O Pin	20 mA	40 mA	40 mA
DC Current for 3.3 V Pin	50 mA
Flash Memory	32 KB (4 KB for bootloader)	32 KB (2 KB for bootloader)	32 KB (2 KB for bootloader)
SRAM	2.5 KB	2 KB	2 KB
EEPROM	1 KB	1 KB	1 KB
Clock Speed	16 MHz	16 MHz	16 MHz
LED BUILTIN	13
Additional Features		* AVR Architecture * Power Consumption - 19 mA
Length	48 mm		30 mm
Width	18 mm		18 mm
Weight	13 g	7 g
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Feature Enhanced

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Boards

Boards

	Arduino Mega 2560 Rev 3	Arduino Zero	Arduino Due

Microcontroller	ATmega2560	ATSAMD21G18, 32-Bit ARM Cortex MO+	AT91SAM3X8E
Operating Voltage	5 V	3.3 V	3.3 V
Input Voltage (Recommended)	7-12 V		7-12 V
Input Voltage (Limit)	6-20 V		6-16 V
Digital (I/O) Pins	54 (15 for PWM Output)	20	54 (12 for PWM Output)
PWM Digital (I/O) Pins	6	All but Pins 2 and 7
External Interrupts		All Pins Except Pin 4
Analog Input Pins	6	6, 12-bit ADC channels	12
Analog Output Pins		1, 10-bit DAC	2 (DAC)
DC Current per I/O Pin	20 mA	7 mA	130 mA (Total on all I/O lines)
DC Current for 3.3 V Pin	50 mA		800 mA
DC Current for 5 V			800 mA
Flash Memory	256 KB (8 KB for bootloader)	256 KB	512 KB for user applications
SRAM	8 KB	32 KB	96 KB (two banks: 64 KB and 32 KB)
EEPROM	4 KB	None
Clock Speed	16 MHz	48 MHz	84 MHz
LED BUILTIN	13	13
Length	101.52 mm	68 mm	101.52 mm
Width	53.3 mm	30 mm	53.3 mm
Weight	37 g	12 g	36 g
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Pinouts, CS Eagle Files, Schematics, and More!

Arduino Mega 2560 Rev3 Pinout, Atmega2560 Pin Mapping, EAGLE Files, Schematics, and More!

Boards (Cont'd)

Boards (Continued)

	Arduino Pro	Arduino M0	Arduino M0 Pro

Microcontroller	ATmega328	ATSAMD21G18, ARM Cortex-MO+, 48pins LQFP	ATSAMD21G18, ARM Cortex-MO+, 48pins LQFP
Operating Voltage		3.3 V	3.3 V
Input Voltage		5-15 V	5-15 V
Board Power Supply	3.35 - 12 V (3.3 V model) or 5-12 V (5 V model)
Circuit Operating Voltage	3.3 V or 5 V (depending on model)
Digital (I/O) Pins	14	20, with 12 PWM and UART	20
PWM Pins	6
PWM Output		12	12
Analog Input Pins	6
External Interrupts	2
Analog Input Channels			12
Analog I/O Pins		6 +1 DAC	6 +1 DAC
DC Current per I/O Pin	40 mA	7 mA (I/O Pins)	7 mA (I/O Pins)
Flash Memory	32 KB (2 KB for bootloader)	256 KB	256 KB
SRAM	2 KB	32 KB	32 KB
EEPROM	1 KB
Clock Speed	8 MHz (3.3 V version) or 16 MHz (5 V version)	48 MHz	48 MHz
LED BUILTIN	13		13
Power Consumption		29 mA	44 mA
Additional Features	* UART - 1 * SPI - 1 * I2C - 1
Length		68.5 mm	68.5 mm
Width		53 mm	53 mm
Weight		21 g	22 g
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Modules

Modules

	Arduino MKRZero	Arduino Pro Mini

Microcontroller	SAMD21 Cortex-MO +32bit low power ARM MCU	ATmega328
Operating Voltage		5 V
Board Power Supply	5 V (USB/VIN)	3.35 - 12 V (3.3 V model) or 5-12 V (5 V Model)
Supported Battery	Li-Po single cell, 3.7 V, 700mAh minimum
Circuit Operating Voltage	3.3 V	3.3 V or 5 V (depending on model)
Digital (I/O) Pins	22	14
PWM Pins	12 (0,1,2,3,4,5,6,7,8,10, A4 - or 18 -, A4 -or 19)	6
UART	1	1
SPI	1	1
I2C	1	1
PWM Channels		6
Analog Input Pins	7 (ADC 8/10/12 bit)
Analog Output Pins	1 (DAC 10 bit)
External Interrupts	8 (0, 1, 4, 5, 6, 7, 8, A1 - or 16 -, A2 - or 17)	2
DC Current per I/O Pin	7mA	40 mA
Flash Memory	256 KB (8 KB for bootloader)	32 KB (2 KB for bootloader)
SRAM	32 KB	2 KB
EEPROM	none	1 KB
Clock Speed	32.768 kHz (RTC), 48 MHz	8 MHz (3.3 V version) or 16 MHz (5 V version)
LED BUILTIN	32
Additional Features	*Full-Speed USB Device with Embedded Host
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Internet of Things

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Boards

Boards

	Arduino YUN	Arduino Ethernet	Arduino TIAN

	AVR Microcontroller		ARM Microcontroller
Microcontroller	ATmega32U4	ATMega328	SAMD21G18, ARM Cortex-MO+
Operating Voltage	5 V	5 V	3.3 V
Input Voltage	5 V
Input Voltage Plug (Recommended)		7 -12 V
Input Voltage Plug (Limits)		6 - 20 V
Input Voltage PoE (Limits)		36 - 57 V
Digital (I/O) Pins	20	14 (4 for PWM output)
PWM Output	7
Analog I/O Pins	12		6
Analog Input Pins		6
Analog Output Pins		1, 10-bit DAC
DC Current per I/O Pin	40 mA on I/O Pins; 50 mA on 3.3 Pin	40 mA	7 mA (I/O pins)
DC Current for 3.3 V Pin		50 mA
Flash Memory	32 KB (4 KB for bootloader)	32 KB (.5 for bootloader)
SRAM	2.5 KB	2 KB
EEPROM	1 KB	1 KB
Clock Speed	16 MHz	16 MHz	48 MHz
LED BUILTIN	13	13
Bluetooth			CSR8510, Bluetooth with EDR / BLE 4.0
Length	101.52 mm	68.6 mm	68.5 mm
Width	53.3 mm	53.3 mm	53 mm
Weight	37 g	28 g	36 g
	Microprocessor		Microprocessor
Processor	Atheros AR9331		Atheros AR9342
Architecture	MiPS		MiPS
Operating Voltage	3.3 V		3.3 V
Ethernet	802.3 10/100 Mbit/s		802.3 10/100/1000 Mbits/s
WiFi	8.02.11b/g/n 2.4 GHz		802.11 b/g/n 2.4 GHz dual-band
USB Type	2.0 Host		2.0 Host
Card Reader	Micro-SD
RAM	64 MB DDR2		64 MB DDR2
Flash Memory	16 MB		16 MB + 4 GB eMMC
SRAM	2.5 KB
EEPROM	1 KB
Clock Speed	400 Mhz		560 MHz
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Boards (Cont'd)

Boards (Continued)

	Arduino Industrial 101	Arduino Leonardo ETH	Arduino MKRFOX 1200

	AVR Microcontroller	AVR Microcontroller
Microcontroller	ATmega32u4	ATmega32u4	SAMD21 Cortex-MO+ 32bit low power ARM
Operating Voltage	5 V	5 V
Input Voltage	5 V	7-12 V	5-15 V
Board Power Supply			5 V (USB/VIN)
Supported Batteries			2 x AA or AAA
Circuit Operating Voltage			3.3 V
Digital (I/O) Pins	20 (7 exported on header)	20	8
PWM Pins			12 (0,1, 2, 3, 4, 5, 6, 7, 8, 10, A3 - or 18, A4 - or 19)
PWM Output	7 (2 exported on header)	7	12
UART			1
SPI			1
I2C			1
Analog Input Pins			7 (ADC 8/10/12 bit)
Analog Output Pins			1 (DAC 10 bit)
External Interrupts			8 (0, 1, 4, 5, 6, 7, 8, A1 - or 16 -, A2 - or 17)
Analog I/O Pins	12 (4 exported on header)	12
DC Current per I/O Pin	40 mA	40 mA on I/O Pins; 1A on 3.3 V Pin only when powered via external power supply	7 mA
Flash Memory		32 KB (4 KB for bootloader)	256 KB
SRAM	2.5 KB	2.5 KB	32 KB
EEPROM	1 KB	1 KB	no
Clock Speed	16 MHz	16 MHz	32.768 kHz (RTC), 48 MHz
LED BUILTIN			6
Power Consumption		29 mA
Additional Features	* GPIO - Exported on headers * DogOLED - 1 Exported on headers	* Digital I/O Pins - 36-57 V * 4 used SD Card Select; 10 used for W550 Select * Card Reader - Micro SD Card, with active voltage translators	* Full-speed USB Device and Embedded Host * Antenna - 2 dB * Carrier Frequency - 868 MHz * Working Region - EU
Length	51 mm	68.58 mm	67.64 mm
Width	42 mm	53.34 mm	25 mm
Weight	.0012 Kg	28 g	32 g
	Microprocessor
Processor	Atheros AR9331	802.3
Architecture	MIPS
Operating Voltage	3.3 V
Flash Memory	16 MB
RAM	64 MB DDR2
Clock Speed	400 MHz
WiFi	802.11 b/g/n 2.4 GHz
Ethernet	802.3 10/100 Mbit/s (Exported on headers)	802.3 10/100 Mbit / s
USB	2.0 Host (Exported on headers)
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Modules

Modules

	Arduino MKR1000	Arduino YUN Mini

		AVR Microcontroller
Microcontroller	SAMD21 Cortex-MO +32bit low power ARM MCU	ATmega32u4
Operating Voltage		5 V
Board Power Supply	5 V (USB/VIN)
Supported Battery	Li-Po single cell, 3.7 V, 700mAh minimum
Circuit Operating Voltage	3.3 V
Digital (I/O) Pins	8	20
PWM Pins	12 (0,1,2,3,4,5,6,7,8,10, A3 - or 18 -, A4 -or 19)
UART	1
SPI	1
I2C	1
PWM Output		7
Power Consumption		170 mA
Analog Input Pins	7 (ADC 8/10/12 bit)
Analog Output Pins	1 (DAC 10 bit)
Analog I/O Pins		12
External Interrupts	8 (0, 1, 4, 5, 6, 7, 8, A1 - or 16 -, A2 - or 17)
DC Current per I/O Pin	7mA	40 mA on I/O Pins; 50 mA on 3.3 V Pin
Flash Memory	256 KB	32 KB
SRAM	32 KB	2.5 KB
EEPROM	none	1 KB
Clock Speed	32.768 kHz (RTC), 48 MHz
LED BUILTIN	6
Length	61.5 mm	71.1 mm
Width	25 mm	23 mm
Weight	32 g	16 g
		Microprocessor
Processor		Atheros AR9331
Architecture		MIPS 24 K processor operating at up to 400 MHz
Operating Voltage		3.3 V typ.380 mA (113~570 mA)
Flash Memory		16 MB
RAM		64 MB DDR2
Clock Speed		400 MHz
WiFi		802.11 b/g/n 2.4 GHz
Ethernet		802.3 10/100 Mbit/s
USB		2.0 Host
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Wearables

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Boards

Boards

	Arduino Gemma	Lilypad Arduino USB	Lilypad Arduino Main Board

Microcontroller	ATtiny85	ATMega32u4	ATmega168 or ATmega328V
Operating Voltage	3.3 V	3.3 V	2.7 V - 5.5 V
Input Voltage	4 V - 16 V	3.8 V - 5 V	2.7 V - 5.5 V
Digital (I/O) Pins	3	9	14
PWM Channels	2	4	6
Analog Input Channels	1	4	6
DC Current per I/O Pin	20 mA	40 mA	40 mA
Absorption	9 mA while running
Flash Memory	8 KB (2.75 KB for bootloader)	32 KB (4 KB for bootloader)	16 KB (2 KB for bootloader)
SRAM	512 KB	2.5 KB	1 KB
EEPROM	512 KB	1 KB	512 KB
Clock Speed	8 MHz	8 MHz	8 MHz
LED BUILTIN	1
Diameter	27.94 mm	50 mm
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Boards (Cont'd)

Boards (Continued)

	Lilypad Arduino Simple	Lilypad Arduino Simple Snap

Microcontroller	ATmega328	ATmega328
Operating Voltage	2.7 V - 5.5 V	2.7 V - 5.5 V
Input Voltage	2.7 V - 5.5 V	2.7 V - 5.5 V
Digital (I/O) Pins	9	9
PWM Channels	5	5
Analog Input Channels	4	4
DC Current per I/O Pin	40 mA	40 mA
Flash Memory	32 KB (2 KB for bootloader)	32 KB (2 KB for bootloader)
SRAM	2 KB	2 KB
EEPROM	1 KB	1 KB
Clock Speed	8 MHz	8 MHz
Diameter	50 mm	50 mm
Radius		18 mm
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Top Comments

neilk over 8 years ago +1

Extremely useful to have everything brought together like this. Thanks very much for the effort! Neil

hugohu over 4 years ago

Nice guide.

Now we have a ton of more arduinos and third party ones from who knows how much companies... let's not think about a replacement
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neliger over 8 years ago in reply to michaelkellett

Yep, I use the Elegoo UNO R3 card for prototyping and Elegoo Nano for final work, those are really cheap.

At the size and price of a Nano, I don't spend time to make a basic set myself on a PCB.
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michaelkellett over 8 years ago

This is only a tiny selection of the Arduino compatible boards around - there are also lots which are software compatible but with different physical layouts and countless boards which are not software compatible but offer the same expansion connections.

Farnell sell lots of them too, like ST's Nucleos for example.

MK
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neilk over 8 years ago

Extremely useful to have everything brought together like this.

Thanks very much for the effort!

Neil
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