Wiimote Project

Hardware Support => IR Pens => Topic started by: skimmer on January 18, 2009, 03:23:05 PM

Title: IDEA for a pressure sensitive IR pen
Post by: skimmer on January 18, 2009, 03:23:05 PM
Hello,

I learned about this whole wii whiteboard idea just a little while ago and have been busy trying to make an IR pen ever since.  I first made a normal push-button pen and was excited to try it out.  I discovered that it was very difficult to write/print quickly with it (and my wife was absolutely disastrous at it).  So I tried to make a pressure sensitive pen.  The pressure sensitive pen is SO much easier to write quickly with (I am a teacher and am hoping to use this as a whiteboard in the classroom).  This pen is also very sensitive - ie. you don't have to press hard at all, and it feels very much like writing with an actual whiteboard marker on a whiteboard.

This website has been so helpful in guiding me, I thought I would contribute what I came up with.
The key to my pressure sensitive pen is a stain remover pen (Tide-To-Go) which already comes with pressure sensitive tip.  I've included a diagram with some comments.
Title: Re: IDEA for a pressure sensitive IR pen
Post by: benpaddlejones on January 18, 2009, 03:59:18 PM
skimmer
Brilliant in its simplicity!

Any chance you could provide more information on the ben body?

Some images of packaging and links to manufacturer or online retailers would really help other follow in your footsteps

benpaddlejones :)

p.s. this looks like a marketable product to me!
Title: Re: IDEA for a pressure sensitive IR pen
Post by: jdkestewart on January 22, 2009, 01:52:03 AM
Hi all,
This looks like a great way to get pressure sensitive pens. Here's a link for the pen.

http://housekeeping.about.com/od/productreviews/gr/tidetogo.htm

I'll give it a go and let you know.

Cheers,
Joe
Title: Re: IDEA for a pressure sensitive IR pen
Post by: jdkestewart on January 22, 2009, 02:23:57 AM
Buy them off ebay for US$23 delivered for a pack of 5

TIDE TO GO INSTANT STAIN REMOVER 5 CT  (search ebay item)

http://cgi.ebay.com.au/TIDE-TO-GO-INSTANT-STAIN-REMOVER-5-CT_W0QQitemZ330301936255QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item330301936255&_trksid=p3286.m63.l1177

Good luck,
Joe.
Title: Re: IDEA for a pressure sensitive IR pen
Post by: bubka on February 04, 2009, 07:54:09 PM
I made one; however, my spring and "switch" are between the LED and battery

[youtube]http://www.youtube.com/watch?v=lFozE9jm4_s[/youtube]

Does not work great for writing.

more:
http://www.wiimoteproject.com/wiimote-interactive-learning-and-pedagodgy-discussion/my-wiimote-interactive-whiteboard-setup/
Title: Re: IDEA for a pressure sensitive IR pen
Post by: skimmer on February 04, 2009, 08:33:51 PM
I just saw your images - I think the main problem is the spring you are using - it looks pretty heavy duty.  To press against it in order to make the connection would require a fair bit of force (as shown in video).  I'll try to post a video of my IR pen in action - the spring is simply a very thin wire (or a few strands of wire twisted together) made into the shape of a spring.  It is such a loose spring that the weight of the pen alone will turn on the pen - you don't really have to "press" against a surface at all - very easy to write with.
Title: Re: IDEA for a pressure sensitive IR pen
Post by: moveaway00 on October 18, 2009, 05:52:44 PM
I accidentally broke off the chalky tip. I'm not sure if that is the reason why, but: I cannot seem to remove the "important part" from the tip of the pen. I've tried twisting, pulling, and then pushing the remaining chalky tip down, nothing has worked. I had to stop pulling when squeezing on it with the pliers felt like i might break something. Am I just being stupid?
Title: Re: IDEA for a pressure sensitive IR pen
Post by: jammin0 on March 19, 2010, 03:16:10 PM
Any reason you couldn't use the tide to go pen body instead of using another marker body?
Title: Re: IDEA for a pressure sensitive IR pen
Post by: skimmer on March 20, 2010, 08:57:35 PM
Not at all.  The Tide to Go pen body will fit a AAA battery quite nicely.  In fact even the tide to go mini pens will just fit a AAA.  I just think that a AA battery would be better, which doesn't fit in the pen body.