ELEC 3907 Engineering Project Labs: Arduino Types

Here's a comparison of different types of arduinos with different pin numbers and structures taken from: https://elektronicsweb.wordpress.com/2017/01/27/types-of-arduino-board-and-selection-guide/

Arduino for your project.

Item	System Voltage	Clock Speed	Digital I/O	Analog Inputs	PWM	UART	Programming Interface	Cost
ATmega328 Boards — 32kB Program Space // 1 UART // 6 PWM // 4-8 Analog Inputs // 9-14 Digital I/O
Arduino Uno – R3	5V	16MHz	14	6	6	1	USB via ATMega16U2	$29.95
Arduino Uno R3 SMD	5V	16MHz	14	6	6	1	USB via ATMega16U2	$29.95
RedBoard	5V	16MHz	14	6	6	1	USB via FTDI	$24.95
Arduino Pro 3.3V/8MHz	3.3V	8MHz	14	6	6	1	FTDI-Compatible Header	$14.95
Arduino Pro 5V/16MHz	5V	16MHz	14	6	6	1	FTDI-Compatible Header	$14.95
Arduino Mini 05	5V	16MHz	14	8	6	1	FTDI-Compatible Header	$33.95
Arduino Pro Mini 3.3V/8MHz	3.3V	8MHz	14	8	6	1	FTDI-Compatible Header	$9.95
Arduino Pro Mini 5V/16MHz	5V	16MHz	14	8	6	1	FTDI-Compatible Header	$9.95
Arduino Ethernet	5V	16MHz	14	6	6	1	FTDI-Compatible Header	$59.95
Arduino Fio	3.3V	8MHz	14	8	6	1	FTDI-Compatible Header or Wirelessly via XBee†	$24.95
LilyPad Arduino 328 Main Board	3.3V	8MHz	14	6	6	1	FTDI-Compatible Header	$21.95
LilyPad Arduino Simple Board	3.3V	8MHz	9	4	5	0‡	FTDI-Compatible Header	$19.95
ATmega32U4 Boards — 32kB Program Space // 1 UART // 5-7 PWM // 12 Analog Inputs // 9-20 Digital I/O
Arduino Leonardo	5V	16MHz	20*	12	7	1	Native USB	$24.95
Pro Micro 5V/16MHz	5V	16MHz	12	12	5	1	Native USB	$19.95
Pro Micro 3.3V/8MHz	3.3V	8MHz	12	12	5	1	Native USB	$19.95
LilyPad Arduino USB	5V	16MHz	9	12	5	0	Native USB	$24.95
ATmega2560 Arduino Mega’s — 256kB Program Space // 4 UARTs // 14 PWM // 16 Analog Inputs // 54 Digital I/O
Arduino Mega 2560 R3	5V	16MHz	54	16	14	4	USB via ATMega16U2	$58.95
Mega Pro 3.3V	3.3V	8MHz	54	16	14	4	FTDI-Compatible Header	$44.95
Mega Pro 5V	5V	16MHz	54	16	14	4	FTDI-Compatible Header	$44.95
Mega Pro Mini 3.3V	3.3V	8MHz	54	16	14	4	FTDI-Compatible Header	$49.95
AT91SAM3X8E Arduino Due — 512kB Program Space // 4 UARTs // 12 PWM (2 DAC) // 12 Analog Input // 54 Digital I/O
Arduino Due	3.3V	84MHz	54	12	12	4	USB native	$49.

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Arduino Types