LED Dimmer with IC555

Equipment list

R1-1K 1/4w
R2-120 ohm 1/4w
R3,R4,R5 - 68 ohm 1/4w

VR1 - 50K

C1- 0.1uF Ceramic
C2 - 0.01 uF Ceramic

D1,D2 - 1N4007

Q1 - BD139

IC - NE555

D3-D11 - LED