The R2Duino is a fully assembled USB stick sized Arduino clone based on the ATmega328P. It has the same functionality as the Arduino Nano 3.0, but comes in a different package.

You can now add shield PCBs, shield kits, and extra Digisparks to your order - click here for all the details!

StickDuino - USB Stick Sized Arduino Clone

The libopencm3 project (previously known as libopenstm32) aims to create a free/libre/open-source (LGPL v3, or later) firmware library for various ARM Cortex-M3 microcontrollers, including ST STM32, Toshiba TX03, Atmel SAM3U, NXP LPC1000, EFM32 and others.

Gnuk is an implementation of USB cryptographic token for GNU Privacy Guard. Gnuk supports OpenPGP card protocol version 2, and it runs on STM32F103 processor.

SdFat is an Arduino library that supports FAT16 and FAT32 file systems on standard and high capacity SD cards.

This board has all the essentials: a fast processor with lots of peripherals. At Maple's core is a 72MHz STM32 processor, an ARM Cortex M3 chip.

ARM based Development Boards and Modules with ARM 9, ARM 11, ARM Cortex-A8

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Pogo Connect puts the fun back into sketching or taking notes on iPad. It's a bluetooth pen that allows you to draw with different line widths on an iPad. It's simple to set up, and works with many drawing and note-taking apps.