Mega protoshield for Arduino : ID 192 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Gikfun Prototype Shield DIY KIT for Arduino UNO R3 Mega 328P (Pack of 3 Sets) Ek1038x3 : Electronics

Mega protoshield for Arduino : ID 192 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Are you ready? Really ready? Cause here comes the Adafruit Grand Central featuring the Microchip ATSAMD51. This dev board is so big, it's not named after a Metro train, it's a whole freakin' station! This board is like a freight train, with its 120MHz Cortex M4 with floating point support. Your code will zig and zag and zoom, and with a bunch of extra peripherals for support, this will for sure be your favorite new chipset.

Adafruit Grand Central M4 Express Featuring SAMD51 ADA4084

Gikfun Prototype Shield DIY KIT for Arduino UNO R3 Mega 328P (Pack of 3 Sets) Ek1038x3 : Electronics

Discontinued - you can grab Adafruit Grand Central M4 Express featuring the SAMD51 instead!

Arduino Mega 2560 R3 (Atmega2560 - assembled)

Arduino Products Category on Adafruit Industries

Arduino, Shields Products Category on Adafruit Industries

Here's a great way to use and adapt a world of projects and example code - the Adafruit METRO. It's a derivative of the Arduino UNO board (RS 769-7409) and it runs so the ATmega328P at 16 MHz with 32 KB of flash and 2 KB of RAM. So it's just the thing for those simple projects. Featuring 19 GPIO pins including analogue inputs, hardware UART, SPI and I²C, timers and PWM, the METRO's logic level is 5 V (though you'll find it easy enough to convert this to 3.3 V).

Adafruit Metro 328 - Arduino Compatible - with Headers ADA2488

Discontinued - you can grab Adafruit Grand Central M4 Express featuring the SAMD51 instead! The Arduino Mega 2560 is a microcontroller board based on

Arduino Mega 2560 R3 (Atmega2560 - assembled)

Works with the Uno! This prototyping shield is the best out there (well, we think so, at least). It works with UNO, NG, Diecimila and Duemilanove

Adafruit Proto Shield for Arduino Kit