| « Multitouch display, build your own: a compliant surface with a silicone rubber layer |
| Multitouch display, build your own: paper on the silicone rubber layer » |
Multitouch display, build your own: silicone rubber layer first test
I've just completed the frame for my multitouch display and I could not resist from making an early test tonight!
To be honest, I have nothing to be enthusiastic for...
This is because this first test went really really bad. I had no usable "blobs" at all! I made also a short video that from the IR camera's view shows no blobs with the rear projection film applied. To be more precise, I had great effect on the bare silicone layer, the blobs were really clear and fast responding. As soon as I place the rear projection film on it all that magic effect just disappears. You will see also in the video that it is the same with two kind of projection surface: the Peroni Panorama that was kindly offered by Peroni and the Rosco Grey that I had from Gravano of the NUI Group who was also the man that successfully used it as first. Both films gave bad results in any position, rough surface up or down.
This is bad, I just don't want to think that my efforts for preparing the silicone rubber layer went wasted. To find some information and answers I posted in the NUI Group forum and also sent an email to Gravano who already helped me in the past. I'm really hoping to have good informations or hints from someone that will help me to have this display finally work as expected!
In the ending part of the video, you will see that the nails tip are slightly visible. I'm still thinking on this because it demonstrate that, somehow, my setup could work. Actually I'm thinking about to perform some more tests increasing the IR light in the plexiglass by putting more IR LEDs in the frame or just better polishing the plexiglass edges (yes I was probably too quick in doing this at the beginning). On the other side I can try the other models of rear projection tissues kindly provided me by Peroni. For now, apart from this post, there's nothing I can do at 2 a.m. apart from going to sleep.....but....I have to find the solution!
To be honest, I have nothing to be enthusiastic for...This is because this first test went really really bad. I had no usable "blobs" at all! I made also a short video that from the IR camera's view shows no blobs with the rear projection film applied. To be more precise, I had great effect on the bare silicone layer, the blobs were really clear and fast responding. As soon as I place the rear projection film on it all that magic effect just disappears. You will see also in the video that it is the same with two kind of projection surface: the Peroni Panorama that was kindly offered by Peroni and the Rosco Grey that I had from Gravano of the NUI Group who was also the man that successfully used it as first. Both films gave bad results in any position, rough surface up or down.
This is bad, I just don't want to think that my efforts for preparing the silicone rubber layer went wasted. To find some information and answers I posted in the NUI Group forum and also sent an email to Gravano who already helped me in the past. I'm really hoping to have good informations or hints from someone that will help me to have this display finally work as expected!
In the ending part of the video, you will see that the nails tip are slightly visible. I'm still thinking on this because it demonstrate that, somehow, my setup could work. Actually I'm thinking about to perform some more tests increasing the IR light in the plexiglass by putting more IR LEDs in the frame or just better polishing the plexiglass edges (yes I was probably too quick in doing this at the beginning). On the other side I can try the other models of rear projection tissues kindly provided me by Peroni. For now, apart from this post, there's nothing I can do at 2 a.m. apart from going to sleep.....but....I have to find the solution!
|
||
|
||
| « Multitouch display, build your own: a compliant surface with a silicone rubber layer |
| Multitouch display, build your own: paper on the silicone rubber layer » |
4 Comments
Leave a comment
Navigate this site!
|
|
|
|
 |
Hi, how does one go about ordering a sample of the Peroni Panorama material.
Hi, you can contact the company through the contacts you'll find on their website: http://www.peroni.com/ENG/
I have a 32"x18" acrylic 3/4" thick and it picks up blobs great, but as soon as I put _anything_ between my finger and the acrylic I get absolutely nothing. No blobs at all. I wish I had Rosco Grey, but I need to try this silicone first. Should I do it? Have you come to a conclusion about the silicone?
Yes Adam, as soon as you put other materials on the acrylic that have no good coupling with it you will have a bad effect. That's why you need to use silicone rubber, because it adhere perfectly to the acrylic and, on the other side, it will have a good coupling with any other material you use on the finger side. So, this layer will couple with the rear projection surface (Rosco) very well and you will have blobs again. This way the blobs are not made directly by your fingers, they will come out by the frustration of the silicone surface where the Rosco is pressed on it (by the finger). If you're lucky (not like me) your silicone rubber layer will be not sticky and will be good as it is, otherwise (like me) you need an additional layer made of sketch (tracing) paper to avoid that the Rosco sticks on it.
Hope this helps.