http://www.instructables.com/id/Arduino-password-lock/
http://www.instructables.com/id/Arduino-Weather-Station-AWS/
http://www.instructables.com/id/Arduino-FM-radio-receiver-shield/
http://www.instructables.com/id/IR-laser-person-counter/
http://www.instructables.com/id/Line-following-Robot-with-Arduino/
http://www.serasidis.gr/circuits/mini_logic_analyzer/miniLogicAnalyzer.htm
http://www.instructables.com/id/3D-LED-Cube/step2/3D-LED-Hardware-Control-Electronics-For-Columns/
http://www.instructables.com/id/How-To-Use-a-Nokia-Color-LCD/
http://www.instructables.com/id/DIY-Arduino-3D-Laser-Scanner/
http://www.instructables.com/id/Digital-Ultrasonic-Tape-Measure/
http://www.instructables.com/id/Infinity-mirror-color-changing-touch-table/
http://www.instructables.com/id/Access-control-with-Arduino-Keypad-4x4-Servo/
http://playground.arduino.cc/Projects/Ideas
http://www.instructables.com/id/Gas-detector-indicator-USB-powered-with-arduin/