Instructables

Step 2: WIRING THE TV LOUDNESS GUARD


SOUND SENSOR
  • GND pin ---> Arduino GND pin
  • VCC pin ---> Arduino 5V pin
  • SIG pin ---> Arduino A0 pin

IR TRANSMITTER LED
  • Cathode ---> Arduino GND
  • Anode ---> 1K Ohms ---> Arduino pin 3 (PWM)
NOTE: I forgot to add the 1K ohms resistor to my prototype but it's wise to include it. 

IR 38KHZ RECEIVER (FACING YOU)
  • Right Pin --->  Arduino 5V pin
  • Middle Pin ---> Arduino GND pin
  • Left Pin ---> Arduino 11 pin (PWM)