➢Step descriptions:
✦Step 1:Materials we need:
Arduino UNO,
![](https://cdn.hackaday.io/images/7137191570764406631.png)
Breadboard,
![](https://cdn.hackaday.io/images/220771570764416137.png)
Jumper wires,
![](https://cdn.hackaday.io/images/395621570764424550.png)
LEDs
![](https://cdn.hackaday.io/images/8403551570764432827.png)
Programming cable,
![](https://cdn.hackaday.io/images/119871570764442923.png)
220ohm resistors,
![](https://cdn.hackaday.io/images/3146471570764453350.png)
Sound sensor,
![](https://cdn.hackaday.io/images/322871570764468653.png)
✦Step 2:On a breadboard, connect LEDs+ve leg with 220ohm resistor.
![](https://cdn.hackaday.io/images/4925761570764484194.png)
✦Step 3:Small leg of led is -ve, with the help of jumper wire connect it with GND of arduino.
![](https://cdn.hackaday.io/images/6785261570764502568.png)
✦Step 4:Connect a jumper wire to the +ve end of resistor and then connect it with arduino pin9.
![](https://cdn.hackaday.io/images/7299671570764562495.png)
✦Step 5:Connection:
arduino sound sensor
pin no2. out
vcc vcc
gnd gnd
![](https://cdn.hackaday.io/images/7863021570764594648.png)
✦Step 6:Coding as in the pic.
![](https://cdn.hackaday.io/images/8162041570764604027.png)
✦Step 7:Test
![](https://cdn.hackaday.io/images/5202571570764616273.png)
Video on Youtube: