[chbot] Python on a router, next meeting is on Tuesday

[Charles Manning]

On Thursday 10 December 2009 16:29:37 Morris wrote:
> > So would you be up for bringing your router controlled robot and python
> > on Tuesday for a non-competitive repeat presentation?
>
> Some magic smoke came out of the h-bridge yesterday so the robot is not
> in working condition... a popping sound followed by a smoke signal:
> ahhhhhh - such sweet memories and fond moments! I think I won't be using
> L298's again - I need something with better protection (and it would be
> nice to use a FET based h-bridge to lower losses :)  ... L298's are
> cheap, available, and relatively grunty, but too fragile ;)

Do you have external clamping diodes? Without those you're going to kill these 
easily.
btw: Just like their baby brothers (L293) they're terribly lossy with 
somewhere around 3V being lost in the part (depending on current etc).


>
> On Thu, 2009-12-10 at 14:33 +1300, Richard Jones wrote:
> > Well Morris,
> >
> > I could not make it to your Python on a router presentation as I like to
> > play 'Go' on Fridays.
> > So would you be up for bringing your router controlled robot and python
> > on Tuesday for a non-competitive repeat presentation?
> > As far as being beaten is concerned young Hayley showed the rest of us
> > how to build and program robots at our last meeting!
> >
> > Richard
> >
> > On Thu, 10 Dec 2009 14:22:31 +1300, Morris <skibear at gmail.com> wrote:
> > > That is amazing! I love seeing these sort of devices!
> > >
> > > However I find them demotivating to get involved with because: either I
> > > want to be competitive (but I don't have the hours to devote), or I
> > > want to do something for fun (in which case I prefer something
> > > non-competitive).
> > >
> > > I have been trying to think of some simple events that are more fun and
> > > don't smell of competitiveness (unlike micromouse, line following, can
> > > moving) but I haven't come up with better ideas than  those!... Anybody
> > > else?
> > >
> > > Morris
> > >
> > > On Thu, 2009-12-10 at 07:06 +1300, Richard Jones wrote:
> > >> This youtube video shows the fastest and smallest micromouse I've
> >
> > seen...
> >
> > >> http://www.youtube.com/watch?v=gu2vX886Oj8&feature=player_embedded
> > >>
> > >> Our next meeting is on Tuesday 15th Dec at 6.30pm in the Science Alive
> > >> Seminar Room
> > >> I'll be bringing a robot to lift drink cans and drop them off the
> > >> table. RoboBoogie may come along to demonstrate their National
> > >> Robobucup
> >
> > winning
> >
> > >> dance.
> > >> I'm sure there will be lots more to see, bring along what you are
> >
> > working
> >
> > >> on.
> > >> As its Christmas feel free to bring along a plate to share.
> > >>
> > >> Richard
> > >>
> > >> _______________________________________________
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> > >> Meeting Dates:
> > >> Tue 15 December 2009 6.30pm
> > >> Tue 16 February 2010 6.30pm
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> >
> > _______________________________________________
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> > Meeting Dates:
> > Tue 15 December 2009 6.30pm
> > Tue 16 February 2010 6.30pm
> > When replying, please edit your Subject line to reflect new content.