LED Breathing circuit (PWM) for highpower LED, LED strip etc

LED breathing is one of the eye candy for every vehicles, LED fad in and fade out effect looks awesome with under body lighting.

We are using PIC microcontroller here, PIC12F683 is a small 8 pin circuit and having 1CCP module (PWM) in it, it wont cost too much, may be within Rs.60 (1$).we are using 1 pin for PWM output, 1 pin for button pressed feedback and another for button to vary breathing speed (delay between changing duty cycle of PWM), other 3 pins are left spare, you can use it for any other functions like blinkin.


Don't forget to get clean 5V DC power supply circuit before this

Circuit

*The components used in this circuit diagram of same package of original components,  

 Components

IC1:PIC12F683

R1: 1K Ohm

R2: 4.7K Ohm

R3: 100 Ohm

R4: 10K Ohm

R5: 470 Ohm

T1: BC547

Q1: TIP127

Push button, LED.

PCB, Project files & .HEX files

• Project files : Yandex Folder

Any problems?? Comment below