dsPIC Ball & Plate with touchscreen and servomotors

[McGuywer]

I do that with PIC12F675.

[ivanovich19]

i would like to bought it.....does anyone know where can i get one? or want to sell it to me

[pjpj1974]

@ivanovich19 : just look at the link to Evidence in the top of the description. Also, send an email to info "at" evidence.eu.com ! Ciao, PJ

[david31076]

very nice work, respect

[emetcrew]

Hey, impressive tunning ... what tunning parameters did you use for the PID?

[djtonyxxx5]

bravi bravi bravi... clap clap clap...

[pjpj1974]

The prototype used the FLEX boards plus a custom breadboard. The final item is using the FLEX Demo2 Pack, which supports 2 servo + touchscreen (or in alternative 2 DC motors + 2 encoders). We also made the control using ScicosLab! The SW is open source and available on teh ERIKA Enterprise website... PJ

[MsEnriqueGomez]

My congratulations it's a very good work. I'll do it but I have a question How did you make the circuit?

thanks

[1BustedMyth]

RESPECT

[Soulrider2012]

I have a question. While the unit shown here is very impressive, the video shown on the other web site (where it can be purchased) shows a unit that has side rails or guide rails on the plate preventing the ball from rolling off.  My question is are these rails/guides removable? They look like they might be. If not, the unit made for sale is not anywhere near as impressive because the ball CAN'T fall off. The fact that it can react so quickly to retain the ball is what makes it impressive.

[pjpj1974]

@Soulrider2012 Hi! In the video the touchscreen was glued to an iron basis. We found out that having the ball fall off was often disappointing for many students because they need a longtime to get a control algorithm tuned and working fine. The guides of the "Amazing ball" can be flattened if you want, but then you'll have to glue someway the touchscreen to the unit (the guides also help to keep the touchscreen in place without glue! I hope this helps... PJ

[DrAma999]

REally really cute

[bassplayer142]

fine tuned pid :)

[pjpj1974]

Dear all,

We just released the Amazing Ball, a working version of the Ball and Plate shown on this video... just check it in the Evidence web site!

Ciao!

PJ

[vdub350]

Is the code based on only the position of the ball, or is it also monitoring the velocity and direction of the balls movement?

[chinesemonk]

@vdub350 My guess is that it's looking at the movement as well. When he rolls it in from the side it tilts toward the edge he rolled it from.

[reconvolution]

Suppose, there are two PID controllers in the code - one for each axis. Then derivative part of the PID is looking at the ball velocity.

[EnjoyInfo]

Where did you bough the touch-screen from?

Da dove avete comprato il touch-screen?

[pjpj1974]

There are many commercial touch screens available. in any case, soon we'll release a kit that will enable everybody to play with it :-)

[EnjoyInfo]

Not really the answer I was hoping for, but thanks anyway.

[pjpj1974]

The touch screen we got was for a company in italy and was a sample. I guess RS and Farnell are selling touch screens of different sizes...

[dodgedart74]

@EnjoyInfo do you enjoy info? or are you a picky asshole who cant spell?

[adamlambert1988]

Could you give any insight into the theory behind the coding of this project?

[oqla2000]

great work woww

[zubairhussain123]

@silver760:

I live in the UK, i have all the other parts like the servos, touch panel etc, but the joint that is used to support the panel in the centre allowing 2 degrees of freedom is what i am having a lot of difficulty finding...any help would be appreciated :)

[adamlambert1988]

The joints are called universal joints, you can get them from farnel or rs.

[zubairhussain123]

hi, where can i buy the ball joint and mechanical parts for this?

[pjpj1974]

Hi! we are almost ready with the parts... we are going to publish a buyable version in a few weeks... PJ

[silver760]

@zubairhussain123 the servos and joints you can get from any RC model shop,alternatively rs components will have them at a price,technobots is another company that stocks such things,their prices are ok,depends where you live US or UK?

[universalmoor]

the airport of the future!!!!!!!!!!!!!

[legomindstorm1]

good job!!!

[SROCB]

geil gmacht!!!!!!!!!!!!!!!!!!!

[xxxDEATHCORExxx]

what would happen if you had more than one ball?

[pjpj1974]

It's not a multitouch touch screen... it will simply does not work... only one ball!!!

[korpiklaanifreak]

respect!

[Coyote973]

Really nice work, it works perfect. Nothing to say, but I would add a small lag in system (first order filter) for making it not so nervous.

[pjpj1974]

not really... the guy who did the project basically used 2 PID, and everything worked quite fine... PJ

[sovietspyguy]

I'm doing a ball-balancing plate for my Motion Control project! I thought I was being original. :(

I am hoping to do mine with a machine vision system to track the position of the ball, rather than a direct sensing method. Did you have any problems correcting for any possible curving motion of the ball?

[JoaoBio]

Great stuff, a suggestion, this may have many practical uses but if you sold those things in a box people would by those just for the fun... kind like lava lamps, you could earn some serious cash.

[ElPopularVale]

this could be useful for waiters carrying drinks

[MetalStoreArgentina]

Great work !!!

[Poepoesneus]

Can you teach it to roll the ball in a growing spiral once it reached the centre mass point? It would look so cool.

[sersol2]

Hola veo que usas un touch screen, que te da la posicion de la bola de acero, eso a su vez controlas el equilibrio con los servo en X y Y.

mi pregunta es en que parte usas las funciones DS de un PIC?

[pjpj1974]

Hi, the DSP instructions of the dsPIC were not used. We used the Flex boards because it was easy to connect it to the various hardware...

[neho31]

omg LOL

[Maiato1986]

Amazing work!

[eduardoafvieira]

Amazing work. Congratulations. The obvious usefulness of this technology in movement and balance pursuit is astonishing. Specially the reaction speed, very fast. Again, amazing.

Cheers, Eddie

[vinikal]

What would happen with 2 or more balls?

[pjpj1974]

Well... the touchscreen we used is a single touch touchscreen. The system will probably not work... PJ

[LauraLonnia]

Great!

[johnnyneverdies]

I wonder what the commercial use for this is going to be?

[arhuaco]

Los experimentos de Control suelen ser bonitos.

[apoli1959]

wirklich gute arbeit geleistet dieses projekt gefällt mir können sie mir vielleicht ihre adresse geben ich bin geschäftsmann und möchte ihr projekt kaufen