ArduinoIt is a systems conpose of IDE (Integrated developement environment), hardware and embedded software.
It is an open source environment. For more info, please refer to arduino.cc.
Other than the Arduino mother board, there are also adapter that extend the function of the Arduino that is called shield.
Popular available shields are as follow:
7 Segment display shield:
http://store.gravitech.us/7segmentshield.html
Nokia 3310 LCD shield with Joystick:
http://www.nuelectronics.com/estore/index.php?main_page=product_info&cPath=1&pro...
Voice Shield (for speaking projects):
http://www.spikenzielabs.com/Catalog/index.php?main_page=product_info&cPath=3&pr...
Shifty VU Shield (filters audio input for sound reactive projects):
http://www.spikenzielabs.com/Catalog/index.php?main_page=product_info&cPath=27&p...
GSM Shield (for all purpose monitoring etc):
http://www.hwkitchen.com/products/gsm-playground/
LCD Keypad Shield for Arduino:
http://www.nuelectronics.com/estore/index.php?main_page=product_info&cPath=1&pro...
Arduino Nixie Tube Shield:
http://www.arduinix.com/Main/Store.htm
Wifi Shield:
http://asynclabs.com/store?page=shop.browse&category_id=6
Mini Keyboard Shield (34 Button):
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1244690702
CCShield (found the page...):
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1235795499
Screw terminal block shield:
http://oomlout.co.uk/screw-shield-terminal-strip-kit-for-arduino-p-218.html
5x7 matrix shield (prototype):
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1239020801
USB power shield:
http://brettinman.com/2009/08/07/usb-power-shield-v2-0/
Danger shield (not dangerous unless you hit someone with it!)
http://www.seeedstudio.com/depot/danger-shield-complete-kits-p-141.html
RGB LED Shield:
http://www.seeedstudio.com/depot/rgb-led-shield-v14-kit-p-430.html
Stepper Shield:
http://www.adafruit.com/index.php?main_page=product_info&cPath=17_21&products_id...
