[Dprglist] 2 wheel balancing "car"

David davida at smu.edu
Mon Apr 5 20:49:43 PDT 2021


I think 2003 was when the nBot was first published.  Looks like this 
fellow has a very robust platform.  Kudos to anyone who can make a robot 

I will say there are now lots of two wheel balancers out there. Most 
seem to be content to get the platform to balance and they are done.  
Most of the videos, like these, are just of the platform balancing. Not 
many take the next logical step and add sensors and behaviors.  (You 
know, like nBot).

My experience has been that introduces a whole new level of challenge.



On 4/5/21 6:45 PM, Karim Virani via DPRGlist wrote:
> My youtube binge on harmonic and cycloidal drives eventually let me to 
> the GearDownForWhat channel where I stumbled over this:
> https://www.youtube.com/watch?v=k_vYA-xRXyo&ab_channel=GearDownForWhat%3F 
> <https://www.youtube.com/watch?v=k_vYA-xRXyo&ab_channel=GearDownForWhat%3F>
> This video is of a 2 wheel balancing "car". It's not brand new, but it 
> was new to me. The guy does share a simple overview of the control 
> theory.
> Anyhow, this video made me think of nBot and how different a mindset 
> this guy's approach seems to be. If David's is a closer-to--NASA (or 
> really any kind of professional engineering mindset), then this fellow 
> is more like an extreme sports enthusiast or toymaker. Both are 
> interesting approaches, and sometimes a free-for-all attitude can push 
> the envelope of what is considered reasonable or useful.
> And if you're not familiar with David's 
> nBot:http://www.geology.smu.edu/~dpa-www/robo/nbot/ 
> <http://www.geology.smu.edu/~dpa-www/robo/nbot/>
> nBot is around 18 years old now? I remember when it was just a baby - 
> David demoed the inverted pendulum bot at the Bill J. Priest Institute 
> back in the day. Time to head off to college...
> David, consider yourself poked for a response.
> Best,
> Karim
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