➢Step descriptions:

✦Step 1:Materials we need:

Arduino UNO,


Jumper wires,


Programming cable,

220ohm resistors,

Sound sensor,

✦Step 2:On a breadboard, connect LEDs+ve leg with 220ohm resistor.

✦Step 3:Small leg of led is -ve, with the help of jumper wire connect it with GND of arduino.

✦Step 4:Connect a jumper wire to the +ve end of resistor and then connect it with arduino pin9.

✦Step 5:Connection:

arduino    sound sensor

pin no2.       out

vcc            vcc

gnd            gnd

✦Step 6:Coding as in the pic.

✦Step 7:Test

Video on Youtube: