Arduino

Here's some info about the Arduino boards I own.

	Arduino Mega 2560	Arduino Leonardo	Arduino Micro	Arduino Uno R3	Arduino Nano
AVR	ATmega2560	ATmega32u4	ATmega32u4	ATmega328P	ATmega328
Core Architecture	AVR 8-bit RISC	AVR 8-bit RISC	AVR 8-bit RISC	AVR 8-bit RISC	AVR 8-bit RISC
SRAM	8 KB	2.5 KB	2.5 KB	2 KB	2 KB
Flash Memory	256 KB	32 KB	32 KB	32 KB	32 KB
EEPROM	4 KB	1 KB	1 KB	1 KB	1 KB
Maximum Clock Speed	16 MHz	16 MHz	16 MHz	16 MHz	16 MHz
Built-in LED Pin	13	13	13	13	13
Digital I/O Pins	54	20	20	14	14
Analog input pins	16	12	12	6	8
PWM pins	15	7	7	6	6
USB Compatibility	FTDI or CH340	built-in	built-in	FTDI or CH340	FTDI or CH340
UART	4	1	1	1	1
SPI	Yes	Yes	Yes	Yes	Yes
I2C	Yes	Yes	Yes	Yes	Yes
Power Consumption	Standard	Standard	Standard	picoPower	Standard
I/O Voltage	5V	5V	5V	5V	5V
Input voltage (nominal)	7-12V	7-12V	7-12V	7-12V	7-12V
DC Current per I/O Pin	20 mA	10 mA	10 mA	20 mA	20 mA
Supported battery	9V battery
Power Supply Connector	Barrel Plug	Barrel Plug		Barrel Plug
Weight	37 g	20 g	13 g	25 g	7 g
Width	53.3 mm	53.3 mm	18 mm	53.4 mm	18 mm
Length	101.5 mm	68.6 mm	48 mm	68.6 mm	45 mm

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