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 Robotics / Handy Board / 3795
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Subject: 
256 Motor Power Resolution
Newsgroups: 
lugnet.robotics.handyboard
Date: 
Wed, 6 May 1998 00:24:44 GMT
Original-From: 
Gordon Smith <smithg@gat.com#spamcake#>
Viewed: 
1223 times
  
Hi All,
   Has anyone noticed that if you slightly modify Julian Skidmore's LIB_HB.C
code that one can get 256 motor power levels rather than 100? I took the
following code in LIB_HB.C:

void motor(int m, int speed)
{
  if (speed>100) speed=100;
  if (speed<-100) speed=-100;
  if (speed >= 0)
    _set_motor(m, 0, (255*speed)/100);
  else
    _set_motor(m, 1, (-255*speed)/100);
}


And then changed the code to the following:


void motor(int m, int speed)
{
  if (speed>255) speed=255;
  if (speed<-255) speed=-255;
  if (speed >= 0)
    _set_motor(m, 0, speed);
  else
    _set_motor(m, 1,(-1*speed));
}

I can now get 256 power levels rather than the previous 100. I have
tested it (but not extensively) and it seems to work OK. Any comments on
this would be appreciated.

Gordon Smith II
Test Engineer
General Atomics Aeronautical Systems



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