https://www.radiokot.ru/forum/viewtopic.php?p=4256041#p4256041


        (     ,   )
           PWM_Vd.
  13
- PB1  PB0   
- PB2  \,     ,   .        ,  . (   )
- PB3  PB4    ,      ,      . (  ,    )
       PB2,   .

,    :
1.  100%   .
2.  70%   .
3.  40%   .
4.  100%    2  
5.  100%    4  
6. ,  "",   ,     .
7.      .  10-20%   100% ,     20-10% .( )