components :

1 9V Battery

1 555 timer ic

1 2.2KΩ resistor

1 10Ω resistor

1 8Ω Speaker

1 Photoresistor1

1 100μF electrolytic Capacitor

Jumper wires

bread board

Step 1:

sketch on eagle

Step 2:

SEARCH ABOUT THE IC

Step 3:

START CONNECTING :

Step 4:

connect the two parts of the breadboard

Step 5:

connect pin 6 with the jumper we connected in the previous step

Step 6:

connect pin 2 with the other side of the orange jumper

connect another orange jumper in paraller with the previous one

Step 8:

connect pin 8 with the last orange jumper as shown

Step 9:

connect pin 4 with the other side of the last orange jumper (we now connect the purple jumper)

Step 10:

connect the 2.2k ohm resistor from pin 2 to pin 7

Step 11:

connect the capacitor the positive leg(taller)with pin 2 after the resistor , the negative leg with pin 1 as shown

Step 12:

connect the LDR one leg with pin 7 and the other leg with pin 8

Step 13:

connect the 10 k ohm resistor one leg with pin 4 and the other in any position in the breadboard

Step 14:

connect the speaker, the red wire with the other leg of the 10 k ohm resistor , the brown wire with pin 3 of the 555 timer

Step 15:

connect the battery pin 1 with the ground , pin 8 with the power

final result: