dsPIC Ball & Plate with touchscreen and servomotors

http://retis.sssup.it/
http://erika.tuxfamily.org
http://www.evidence.eu.com/content/view/362/433/

This demo shows a Ball and Plate demo done by Francesco Prosperi at the Retis Lab of the Scuola Superiore S. Anna in Pisa.

The demo uses the Flex boards hosting a Microchip dsPIC DSC that pilots two servomotors. The ball position is taken by using a touchscreen!

Updated Apr 2010 - we released a new version of the Ball & Plate available for purchase! Just check
http://www.evidence.eu.com/content/view/362/433/
The new system is completely supported by the Scilab/Scicos Code Generator

Category:

Science & Technology

Tags:

• Microchip
• dsPIC
• Ball
• Plate
• Touchscreen
• Servo
• Motor
• Servomotor
• control
• PID
• Flex
• Evidence
• Retis
• ERIKA
• Enterprise
• RTOS
• OSEK
• Scilab
• Scicos

[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

[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

[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

[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

[McGuywer]

I do that with PIC12F675.

[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...

[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