DIY A Multitouchscreen For Less Then $2!!!

DIY A Multitouchscreen For Less Then $2!!! https://bltlly.com/2twomj

DIY A Multitouchscreen For Less Then $2!!!

Have you ever dreamed of having a giant touchscreen that can detect multiple fingers at once Do you want to impress your friends with your own homemade multitouch surface Well, you can do it yourself for less than $2 with some simple materials and a bit of creativity.

In this article, we will show you how to turn any TV or monitor into a multitouch screen using a cheap webcam, some IR LEDs, and a piece of cardboard. You will also need a computer, a projector, and some software to make it work. Here are the steps:

Get a webcam that can capture infrared light. You can use a PS3 Eye camera, which is recommended for its high frame rate and low latency, or any decent webcam that can be modified to remove the IR filter. You will also need an IR bandpass filter to block out visible light and only let IR light through. You can buy one online or make your own by cutting out a piece of exposed film or floppy disk.

Attach the IR bandpass filter to the webcam lens. You can use tape or glue to secure it. Make sure it covers the entire lens and does not block the view.

Get some IR LEDs. These are LEDs that emit infrared light, which is invisible to the human eye but can be detected by the webcam. You can buy them online or salvage them from old remote controls or other devices. You will need about 96 IR LEDs for a 32-inch screen.

Arrange the IR LEDs in a rectangular frame around the screen. You can use a piece of cardboard or wood to make the frame. Make sure the LEDs are evenly spaced and point towards the screen. Connect the LEDs in parallel and solder wires to connect them to a power source. You can use batteries, a USB cable, or an AC adapter to power the LEDs.

Place the webcam behind the screen, facing the IR LED frame. You can use a tripod or a stand to hold the webcam in place. Make sure the webcam can see the entire screen and is not blocked by anything.

Connect the webcam and the projector to your computer. You will need a software that can turn the images from the webcam into touch events and send them to your computer. One such software is CCV (Community Core Vision), which is free and open source. Download and install CCV from http://ccv.nuigroup.com/.

Run CCV and calibrate your multitouch screen. Follow the instructions on the CCV website to adjust the settings and fine-tune your touch detection. You may need to tweak some parameters such as brightness, contrast, threshold, and blob size to get optimal results.

Project your computer screen onto your multitouch screen using the projector. You can use any software that supports multitouch input, such as Windows 7 or 8, or any application that uses TUIO protocol. TUIO is a standard protocol for sending multitouch data over networks. You can find many TUIO applications on http://www.tuio.org/.

Enjoy your DIY multitouch screen! You can now use your fingers to interact with your computer screen in amazing ways. You can pinch, zoom, rotate, drag, drop, draw, play games, and more.

Congratulations! You have just built your own multitouch screen for less than $2! You can experiment with different sizes, shapes, and materials for your screen and frame. You can also try different software and applications to explore the possibilities of multitouch interaction. Have fun! aa16f39245