Hi, i have arduino mega with 15 pin pwm. Can i used all pin in pwm? Thank
No you can’t. It’s the way the board is designed 
You have to get more Arduino’s or a different hardware platform I think. Maybe you can do something with multiplexing or build your own PWM board. A friend of mine made a 16 channel PWM board which can be addressed with I2C, really neat, but it’s custom designed
I did it. Thanks for getting me out of the way