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 Robotics / 23187
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Subject: 
Re: Replacement Firmware Released
Newsgroups: 
lugnet.robotics
Date: 
Thu, 23 Dec 2004 22:53:03 GMT
Viewed: 
3616 times
  
I'm pretty sure that variable strength braking is in fact the
implementation in the standard firmware. Braking is proportional to the
current setting of the power level. I think there may even be some
ancient posts somewhere in Lugnet on this topic.

"Philippe Hurbain" <philohome@free.fr> wrote in message
news:I96EKv.1s7x@lugnet.com...
> > 1) braking seems to be proportional to power (at power=0, brake is
> > not very effective) -- Lego
> > firmware appears to brake at full power no matter what the power
> > setting is.  My guess is that the
> > 'brake' function (shorting out the motor) is only being effected
> > during the 'on' phase of the PWM
> > routines.
> 
> Agreed. Beeing able to control break strength is an interesting
> feature, but it
> is incompatible with standard firmware. Maybe it should be controlled
> by a
> variable similar to bFloatDuringInactiveMotorPWM



Message has 2 Replies:
  Re: Replacement Firmware Released
 
(...) Agreed. For practical reasons, Ultimate Robolab implements the variable brake mode too. (22 years ago, 24-Dec-04, to lugnet.robotics)
  Re: Replacement Firmware Released
 
I can say with assurance that the firmware that shipped with my RIS 2.0 does indeed brake fully no matter what the power. I started looking into this precisely because the new firmware behaves differently. If that's a feature and not a bug, fine -- (...) (22 years ago, 24-Dec-04, to lugnet.robotics)

Message is in Reply To:
  Re: Replacement Firmware Released
 
(...) Agreed. Beeing able to control break strength is an interesting feature, but it is incompatible with standard firmware. Maybe it should be controlled by a variable similar to bFloatDuringInactiveMotorPWM (22 years ago, 23-Dec-04, to lugnet.robotics)

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