List of Arduino boards and compatible systems

Official

Many versions of the official Arduino hardware have been commercially produced to date:^[1][2]

Name	Processor	Format	Host interface		I/O		Release date	Notes
	Processor	Frequency		Dimensions			Voltage	Flash (KB)	EEPROM (KB)	SRAM (KB)	Digital I/O (pins)	Digital I/O with PWM (pins)	Analog input (pins)	Analog output pins
Arduino Uno WiFi rev 2[3]	ATMEGA4809, NINA-W132 Wi-Fi module from u-blox, ECC608 crypto device	16 MHz	Arduino / Genuino	68.6 mm x 53.4 mm [ 2.7 in x 2.1 in ]	USB	32U4	5 V	48	0.25	6	14	5	6	0	Announced May 17, 2018	Contains six-axis accelerometer, gyroscope the NINA/esp32 module supports WiFi and support Bluetooth as Beta feature[4]
Arduino / Genuino MKR1000	ATSAMW25 (made of SAMD21 Cortex-M0+ 32 bit ARM MCU, WINC1500 2.4 GHz 802.11 b/g/n Wi-Fi, and ECC508 crypto device )	48 MHz	minimal	61.5 mm × 25 mm [ 2.4 in × 1.0 in ]	USB		3.3 V	256	No	32	8	12	7	1	Announced: April 2, 2016
Arduino MKR Zero	ATSAMD21G18A	48 MHz	minimal		USB		3.3 V	256	No	32
Arduino 101[5] Genuino 101	Intel® Curie™ module[6] two tiny cores, an x86 (Quark SE) and an ARC	32 MHz	Arduino / Genuino	68.6 mm × 53.4 mm [ 2.7 in × 2.1 in ]	USB		3.3 V	196		24	14	4	6		October 16, 2015	Contains six-axis accelerometer, gyroscope and Bluetooth
Arduino Zero[7]	ATSAMD21G18A[8]	48 MHz	Arduino	68.6 mm × 53.3 mm [ 2.7 in × 2.1 in ]	USB	Native & EDBG Debug	3.3 V	256	0 to 16 Kb emulation	32	14	12	6	1	Released June 15, 2015[9] Announced May 15, 2014[10] Listed on some vendors list Mar 2015	Beta test started in Aug 1, 2014,[11] 32-bit architecture
Arduino Due[12][13]	ATSAM3X8E[14] (Cortex-M3)	84 MHz	Mega	101.6 mm × 53.3 mm [ 4 in × 2.1 in ]	USB	16U2[15] + native host[16]	3.3 V	512	0[17]	96	54	12	12	2	October 22, 2012[18]	The first Arduino board based on an ARM Processor. Features 2 channel 12-bit DAC, 84 MHz clock frequency, 32-bit architecture, 512 KB Flash and 96 KB SRAM. Unlike most Arduino boards, it operates on 3.3 V and is not 5 V tolerant.
Arduino Yún[19]	Atmega32U4,[20] Atheros AR9331	16 MHz, 400 MHz	Arduino	68.6 mm × 53.3 mm [ 2.7 in × 2.1 in ]	USB		5 V	32 KB, 16 MB	1 KB, 0 KB	2.5 KB, 64 MB	14	6	12		September 10, 2013[21]	Arduino Yún is the combination of a classic Arduino Leonardo (based on the Atmega32U4 processor) with a WiFi system on a chip (SoC) running Linino, a MIPS GNU/Linux based on OpenWrt.
Arduino Leonardo[22]	Atmega32U4[20]	16 MHz	Arduino	68.6 mm × 53.3 mm [ 2.7 in × 2.1 in ]	USB	32U4[20]	5 V	32	1	2.5	20	7	12		July 23, 2012[23]	The Leonardo uses the Atmega32U4 processor, which has a USB controller built-in, eliminating one chip as compared to previous Arduinos.
Arduino Uno[24]	ATmega328P[25]	16 MHz	Arduino	68.6 mm × 53.3 mm [ 2.7 in × 2.1 in ]	USB	8U2[26] (Rev1&2)/ 16U2[15] (Rev3)	5 V	32	1	2	14	6	6		September 24, 2010[27]	This uses the same ATmega328 as late-model Duemilanove, but whereas the Duemilanove used an FTDI chip for USB, the Uno uses an ATmega16U2 (ATmega8U2 before rev3) programmed as a serial converter.
Arduino Mega2560[28]	ATmega2560[29]	16 MHz	Mega	101.6 mm × 53.3 mm [ 4 in × 2.1 in ]	USB	8U2[26] (Rev1&2)/ 16U2[15] (Rev3)	5 V	256	4	8	54	15	16		September 24, 2010[27]	Total memory of 256 KB. Uses the ATmega16U2 (ATmega8U2 before Rev3) USB chip. Most shields that were designed for the Duemilanove, Diecimila, or Uno will fit, but a few shields will not fit because of interference with the extra pins.
Arduino Ethernet[30]	ATmega328[31]	16 MHz	Arduino	68.6 mm × 53.3 mm [ 2.7 in × 2.1 in ]	Ethernet Serial interface	Wiznet Ethernet	5 V	32	1	2	14	4	6		July 13, 2011[32]	Based on the same WIZnet W5100 chip as the Arduino Ethernet Shield.[33] A serial interface is provided for programming, but no USB interface. Late versions of this board support Power over Ethernet (PoE).
Arduino Fio[34]	ATmega328P[25]	8 MHz	minimal	66.0 mm × 27.9 mm [ 2.6 in × 1.1 in ]	XBee Serial		3.3 V	32	1	2	14	6	8		March 18, 2010[35]	Includes XBee socket on bottom of board.[34]
Arduino Nano[36]	ATmega328[31] (ATmega168 before v3.0[37])	16 MHz	minimal	43.18 mm × 18.54 mm [ 1.70 in × 0.73 in ]	USB	FTDI FT232R[38]	5 V	16/32	0.5/1	1/2	14	6	8		May 15, 2008[39]	This small USB-powered version of the Arduino uses a surface-mounted processor.
LilyPad Arduino[40]	ATmega168V or ATmega328V	8 MHz	wearable	51 mm ⌀ [ 2 in ⌀ ]			2.7-5.5 V	16	0.5	1	14	6	6		October 17, 2007[41]	This minimalist design is for wearable applications.
Arduino Pro[42]	ATmega168 or ATmega328[42]	16 MHz	Arduino	52.1 mm × 53.3 mm [ 2.05 in × 2.1 in ]	UART Serial, I2C(TWI), SPI	FTDI	5 V or 3.3 V	16/32	0.5/1	1/2	14	6	6			Designed and manufactured by SparkFun Electronics for use in semi-permanent installations.
Arduino Mega ADK[43]	ATmega2560[29]	16 MHz	Mega	101.6 mm × 53.3 mm [ 4 in × 2.1 in ]		8U2[26] MAX3421E USB Host	5 V	256	4	8	54	14	16		July 13, 2011[32]
Arduino Esplora[44]	Atmega32U4[20]	16 MHz		165.1 mm × 61.0 mm [ 6.5 in × 2.4 in ]		32U4[20]	5 V	32	1	2.5					December 10, 2012	Analog joystick, four buttons, several sensors, 2 TinkerKit inputs and 2 outputs, LCD connector
Arduino Micro[45]	ATmega32U4[20]	16 MHz	Mini	17.8 mm × 48.3 mm [ 0.7 in × 1.9 in ]			5 V	32	1	2.5	20	7	12		November 8, 2012[46]	This Arduino was co-designed by Adafruit.
Arduino Pro Mini	ATmega328	8 (3.3 V)/16 (5 V) MHz	Mini	17.8 mm × 33.0 mm [ 0.7 in × 1.3 in ]	Six-pin serial header		3.3 V / 5 V	32	1	2	14	6	6			Designed and manufactured by SparkFun Electronics.