Haptic Canvas (Laval Virtual 2010 Submission)

[BigChickenCutlet]

@roidroid

Of course it is effective to use electric vibrators for changing the stiffness of the material, however it can not control the state of the fluid. (We tried it before...) The vaccum pump enables us to control the state of the fluid from liquid to solid and presents multimodal sensation (sucking and ejecting modes).

This is why we are using air.

[roidroid]

@BigChickenCutlet how is the pump able to vibrate the air at specific frequencies?

i thought a pump just sucks or blows - how does it cycle from one to the other so fast without damaging the pump? Do you need a special kindof pump?

[BigChickenCutlet]

@roidroid The pumps are activated by the motors. I control the rotation speed of them with PWM control. However it cannot control the frequency precisely.

The caps which are attached at the end of the suckin/ejecting tube work as a filter of the starch. So the pumps suck or eject only water.

More information is aviable at the web site bellow.

ttp://hapticcanvas.bpe.es.osak­­a-u.ac.jp

[roidroid]

@BigChickenCutlet thankyou for the link.  You might want to also put the link into the video description above

[hisami1332]

sorry,I cannot understand.

But,this is very interesting phenomenon and machine.