Erco's Figure Eight Challenge

[Publison]

What we don't see are the PINGs underneath the bot following the outer surface of the plates.

Jim

PS: Nice job BTW

[idbruce]

Yea, I was thinking stepper motors also.

[Ttailspin]

Your estimate of "a minute or two" is a little tight, I would estimate at least 3 to 4 minutes to program the S2.
as one will have to decide on what sound effects to play thru the speaker, and in what order to flash the LED's...
oh yes, there is the decision of which program to use, either spin, or the more graphical S2 software.
and of course the trivial amount of time to actually "write" the code for a figure 8...

I will try to post tonight, and let you know the exact time it takes me...


-Tommy

[erco]

Where's Microcontrolled? He was chomping at the bit a challenge or two ago...

[erco]

And where's Whit, Scribblerkart & the Gatorbots? They should be able to get an old blue Scribbler around a figure 8 in 10 minutes or less.

[erco]

Howzabout PhiPi? He invented the BoeBot encoders, I'm sure this is a trivial pursuit for him.

Or howzabout Matt_G? Perhaps he dismissed the figure 8 as a young man's game...?

[Matt Gilliland]

Or howzabout Matt_G? Perhaps he dismissed the figure 8 as a young man's game...?

Sorry, count me out erco :-(
The ankle shackles keep me pretty much bound to the workbench here.
On those few occasions that I break free, Ken makes sure that the laser at my rooms' exit is fully charged.

And with our ROBOTICS EXPO coming up, (preparations are fully underway!), there's no time - this is not a bad thing though, because we're expecting BOATLOADS of visitors (and lots of kids!) in about 5.5 weeks - It's gonna be a real treat.

-Matt

ps. I'm ignoring the "young man's game" comment for now...however, watch yer back!

[Ttailspin]

I wouldn't sweat it Matt, we all understand, a guy can lose a step as he moves on in years,
Go ahead and sit this one out, try out that new rocking chair, maybe take a nap, We'll try not to make to much noise...

Here is my Scribbler 2 in action, 53 seconds of pure figure 8 fury...


-Tommy

[erco]

Beautiful, Tommy! Now while you're hot, send Caster's End out for a lap around those dinner plates. Come on, you can do it!

Everybody get into the act! Your homebuilt robot, 2 plates, and a few minutes of quality coding time on YouTube. What's not to like?

[Martin_H]

Nice job Tommy!

[Ttailspin]

The S2 encoders are a benchmark of robot accuracy to strive for, that is for sure..

But I like to roll my own as it were, So...

yah, thats right,.. I'm goin there..


-Tommy

[erco]

Dat's my Dawg! Go there!

[erco]

Tommy: Also, let's see Lightshow take a lap or two around the plates!

[Ttailspin]

On it!...
due to time constraints, I did not make all the LED's flash...But the "new" encoders work great!

Whatcha think?...needs work eh?...


-Tommy

[erco]

Something's fishy here...

[Duane Degn]

After much pestering, I'm ready to add my first video to this thread.

I haven't added any distance compultation algorithms to my encoder program yet so this attempt just uses speed and time in an attempt to get the robot to travel in a figure 8.

I have the program monitor the landing gear channel for any significant change (indicating the switch as been thrown). Once the switch is thrown the robot will change mode from maual control to autonomous.

I edited this video without listening to the sound so sorry if I chopped off any words at the beginning or end.



Even though the figure 8 was kind of butchered, I still think it's fun to see those mecanum wheels move the robot. I'll likely give this another attempt tomorrow.

[Martin_H]

Duane, even with the glitch that is really cool. It nicely shows off the holomonic movement of the mechanum wheels..

Tommy, I think I've seen those new quad encoders in the Parallax shop.

[erco]

@Duane:

DY-NO-MITE!!! Beautiful job, stop apologizing already! Everything is a work in progress.

[erco]

Robots have legal right-of-way. Road closures in effect:

http://atom.smasher.org/construction...4=Expect+Delay

[Ttailspin]

Awesome Duane, You have got the Mecum machine rolling sweet now..
Figure 8's are not as easy as they look, alot harder to do than a square.

I am working on a new Magnamatic Encounterator System for this challenge,
Trying to get it done fast, as I am commiting to going to the UPEW this year,(gonna get me one of those mini S2's)
and I want to bring this figure 8 bot, and hopefully a line following robot.. oh, and the "LightShow" robot too.(some assembly required...)

-Tommy