There are tools available to figure out what fuses to write, notably Atmel Studio allows you to set those interactively during the programming step with help for each individual fuse of each device they support.
There are tools available to figure out what fuses to write, notably Atmel Studio allows you to set those interactively during the programming step with help for each individual fuse of each device they support.
There are also [fuse calculators](http://www.engbedded.com/fusecalc) online.
There are also [fuse calculators](http://www.engbedded.com/fusecalc) online.
But before you jump and set fuses, you should understand what they do, since they can make your micro-controller stay silent forever by disabling programming capabilities or changing the basic clock frequency while expecting a sepcific clock (that may not exist, and then you may need to change the hardware to make it work again).
But before you jump and set fuses, you should understand what they do, since they can make your micro-controller stay silent forever by disabling programming capabilities or changing the basic clock frequency while expecting a specific clock (that may not exist, and then you may need to change the hardware to make it work again).
Long story short - these are bits you should write carefully because some options are not reversible (or hard to reverse).
Long story short - these are bits you should write carefully because some options are not reversible (or hard to reverse).
