Diffrent Lenses Results

So i was doing some test with the different lenses that i got from Ebay, including the stock lens on the Philips SPC 900NC . I was testing to see the minimum height that the lenses could see a 12″ ruler at. I’m doing this because this will help determine how thin i can make my actual multitouch table. The results were very help full and i now know how tall i need to make my table.

The Results

These results are from the Philips SPC 900NC webcam just lying on the floor. The heights are all measured from the floor to the top of the acrylic.

Stock lens was able to see the full 12″ ruler at a minimum table height of 21 1/2″
8mm lens was able to see the full 12″ ruler at a minimum table height of 37″ (Multiply 3.08 x desired width of table)
6mm lens was able to see the full 12″ ruler at a minimum table height of 27″ (Multiply 2.25x desired width of table)
4mm lens was able to see the full 12″ ruler at a minimum table height of 22″ (Multiply 1.83 x desired width of table)
3.6mm lens was able to see the full 12″ ruler at a minimum table height of 18″ (Multiply 1.5x desired width of table)

These are just my results for the Philips SPC 900NC webcam with 8, 6, ,4 ,3.6mm lenses. They are fairly acurate, but i could be wrong.

an issue i did have with the 8, 6 ,4mm lens was that it had some focusing issues with the webcam. I could not get it focused completely at all. I could only get it focused enough so it wasn’t a giant blur, and the lens was barely screwed in.

So for my table i figure that the minimum height i can make it is 23″ which for my design is pretty good. I will probably end up making it around 24″ high. Now if i can find a wider angle lens i will be able to make it even thinner.

My First Blobs!

IT WORKS!

Using my 24″ x 18″ Acrylic panel and my original 8 IR LEDs I tested out the new webcam. Set it all up, plug in the power, put my hand on the screen, and what i see… Nothing. =( Oh wait i forgot to plug in the webcam. Plug it in, touch the acrylic what i see nice white blobs.

First Test

I’m happy. it works… Well it detects the blobs. Now i need to set up the new frame for the IR LEDs.

I have recived EVERYTHING!

So i finally got my webcam, frame and power suply

So now all that i have left to do is…build it. YAY!

New Shipment In!

So I got a pretty big shipment in today. I received 3/4 orders from Ebay for my Multitouch Display.

I got in:
100 X 5mm IR infrared LED 850nm
100 X 5mm white LED 17000mcd
4 Webcam lenses at various focal length



Next item to receive is the Philips SPC900NC webcam =D

Site Under Construction

Hello All

I am currently revamping the site. Basically just changing the colour scheme and the banner to my liking. I hope to have everything up and done by the end of the week. =D

UPDATE: I have just finished for the most part the style sheet and images, changing the colours around and such. The original site use to look like this http://test.nattywp.com/?preview_theme=winter_stream
So as you can see i manly just changed the colour scheme, nothing more. Hope you all like it =D