Author Topic: Drawing lines not smooth  (Read 6757 times)

Offline mjdj

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on: January 25, 2008, 03:48:22 AM
Hi,

I have been trying to build this for use at work. I think it is a great idea and many thanks to Johnny Lee for sharing it. However I cannot get it to work like a whiteboard for drawing on the screen anywhere near as good as in Johnny Lee's video. It works great as a mouse pointer but when you try and draw using paint or any other drawing programs the lines are very jagged and broken not smooth like on Johnny Lee's video. I have tried several types of IR LED's all ranging in different powers and view angles and have even put the wiimote ontop of the projector and using the pen backwards so the LED is pointing directly at the wiimote over my sholder but nothing seems to produce smooth lines.

Any Ideas...?

Many Thanks for any help.



Offline Alrecenk

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Reply #1 on: January 25, 2008, 09:20:08 AM
There are only a few reasons I can think of that it wouldn't be smooth:
The LED is not bright enough, the wiimote is positioned badly, or the wiimote simply doesn't track accurately enough for the amount of accuracy you want. It sounds like you've tried a lot of this already, but you might try checking the battery voltage/resistance(rechargeable AAAs have less voltage than regular AAAs), bundling a couple of LEDs together, and positioning the wiimote as close to the screen as it can get and still see all the corners and as aligned with the screen as possible(also make sure that it's not at an angle where your hand might occasionally block it). I had a lot of trouble getting my homemade pen to track well with an LED I bought at radio shack, but the key chain light I bought off line which is much brighter tracks very smoothly. Perhaps you could get the same effect by bundling several LEDS together.

 



Offline Helza

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Reply #2 on: January 25, 2008, 09:57:06 AM