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Controlling AC light using Arduino with relay module
Uber Home Automation w/ Arduino & Pi
Sending data from Arduino to Excel (and plotting it)
Turn an old cellphone into a data sending device (using an arduino)
Mini Arduino CNC
SensoDuino: Turn Your Android Phone into a Wireless Sensors Hub for Arduino
How to control your TV with an Arduino!
Arduino AND Bluetooth HC-05 Connecting easily
Cheap 2-Way Bluetooth Connection Between Arduino and PC
Use a DIY Pressure Plate Switch to Automate Your Haunted House
Arduino 3 wire Matrix Keypad
Create own Membrane Matrix Keypad (and hooking it up to the Arduino)