Aug 14, 2008 - Update: I have released Smoothboard the latest Wii Whiteboard on a new website. The latest Smoothboard release can be downloaded from After spending. February 13th, 2009 at 10:38 am. Sep 26, 2015  Download Wiimote Whiteboard for free. This software application allows you to use your Nintendo Wii remote to create a very low-cost interactive whiteboard system or tablet display. It uses the infrared(IR) camera built into the tip of each Wii remote to track the location IR light pens.

A lot of very smart people have written in questions and suggestions and I think a lot of them are very clever and worth sharing. And I'd like to add some of my own expansions on what I showed in the video. Like they say, 2 brains are better than 1. It turns out several thousand brains are even better. This post will be REGULARLY EDITTED to add new ideas as they come in. I know it breaks the RSS model, but I don't want to make a new post for every new idea. ------------------------------------ My Bluetooth adapter and LEDs - Though it is reported to work with many bluetooth adapters and chipsets, I've been using.

The IR LEDs I use are Vishay TSAL6400s running at 100mA available from. Tip switch - Instead of pressing the side button to illuminate the LED, a tip swtich could be added to illuminate when pressed on a surface. Though, it's mechanically harder to make and finding the right level of pressure for activation can be hard, especially if your surface varies (ex: whiteboard vs carpet) Can you do this with a webcam? - The wii remote contains a 1024x768 camera with built-in hardware for IR blob tracking of upto 4 points at 100Hz. This significantly outperforms any $40 webcam I'm aware of. It'll work with a webcam, just not as well and not as easily. Rear-Projection - using a rear projected surface, works great.

The software will automatically work as-is so long as your pen is bright enough to shine through the projection surface. The wiimote gets a unobstructed view of the screen which eliminates occlusion problems and maximizes tracking resolution.

Though, actually building a rear-projection wall or table can be a little difficult if you don't already have one. Pressure sensitivity - wacom tablets give nice pressure sensitive behavior. Doing this with the wiimote whiteboard will be tough, at least through the camera data. The brightness of the LED varies significantly depending on angle, surface reflectivity, and distance.

Any pressure data based off birghtness will not be reliable. The data could be transmitted via a high-frequency IR channel (like remote contol data) to an IR reciever mounted on the wiimote. (see 'Right click' for more) Right Click - any right click signal based off brightness is not likely going to be reliable. Additionally, using multiple LEDs (1 - left click, 2- right click) won't work at all distances and orientations as the LEDs get too close for the wiimote to distinguish them. The RIGHT way to do this is to use high-frequency IR data transmission (like remote control data) to an IR reciever. This will also give you a way of potentially getting pen ID - which is VERY powerful and may be a future project. Though, this requires quite a bit more hardware.

Multiple wiimotes for better tracking - if you have a large surface, you could have multiple wiimotes covering different areas to keep tracking reslution high, or have the wiimotes cover the same area to avoid occlusion problems, or do some interpolation of the data for higher accuracy. All possible, just with the smarter software. Doing this myself is probably not going to happen, but the source is freely available. I figured out one of the reasons that the remote can have bad tracking sometimes. The wiimote is sensitive enough that it will actually pick up the light emitted directly from the led AND the light reflected off of the screen. I noticed that whenever the remote was very jumpy it was switching between seeing one and two points. I found that using a flat surface, in my case a wooden cabinet door just to test, the resolution was much better.

Sugar bytes wow keygen. I wonder if maybe diffusing the led with some sandpaper or something of that sort would improve tracking on a screen. Despite my electrical ineptitude, I managed to hack an IR LED pen together today. I used an Avery Hi-liter pen (Expo dry-erase pens were more expensive), and everything else came from Radio Shack: 1.2v/100mA 45deg 5mm IR LED, mini momentary switch, N-sized battery holder, and N-size batteries (the AA battery holder doesn't fit and I don't have the skill yet to do this without ready-made holders). Drilled a hole towards the tip of the pen for the switch, glued the IR LED at the tip, threaded the wires into the pen and out the switch hole, soldered them together, and crammed them back in.

It feels quite solid, though the button isn't great. Tested it on my 24' LCD monitor and it works, but all the lines are jaggy. The battery's 1.5v, and I didn't get a 3.3 ohm resistor, so the LED is being overdriven, which may be creating too much reflection. Can't wait until work's off winter break so I can try it with our projectors. I really want to try to get an active tip (push the LED in to activate it), but I'm not sure how to go about that. The reported resolution of the Wii's PixArt camera is not necessarily the same as the resolution of the camera sensor itself.