Arduino

• Arduino UNO R3
• LED Blinking -1
• Push Button - 1
• 16X2 LCD - 1
• Seven segment display - 1 
• Pulse Width Modulation  
• LM35 temperature sensor interfacing with Arduino.   
• AC Voltmeter by Arduino. 
• DC Voltmeter by Arduino
• 12 Volt Battery voltage level indicator.  
• Darkness detector by arduino and LDR  
• Gas Leakage Detector