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TOUCHPAD HACK - How to transform a touchpad into a useful mini graphics tablet with some simple everyday items

For a complete video please visit

http://www.metacafe.com/watch/777196/2_mini_graphics_tablet/
 
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Step 1: Making the pen step 1

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Get yourself a long phillips head screw. This will simulate the tablets pen. And youll also need a small 1.5 volt battery.

Step 2: Making the pen step 2

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The final item is a small ball bearing. You can find these on any dog tag chain. Just snip off one of the balls.

Step 3: Making the pen step 1

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Now place the bearing in the top part of the screw and place the battery ontop of the bearing. Make sure the battery's positive side is on the opposite side to the bearing.

Now simply tape the screw, bearing and battery together leaving only the batteries positive side exposed.

The ball bearing allows the battery to rotate and remain flush with the touchpad whilst in use

I have taped over the screws thread to make it more comfortable to hold

Step 4: Using the pen

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Now that your pen is ready simply place it battery side down on your touchpad using one hand and use your other hand to depress a mouse button....and draw away.

HOPE YOU ENJOY!
spikemtz3 months ago

I don't know which would work better, but upon seeing this, I decided to borrow my mother's Wonder Woman stylus, for touch screens, to see if it would do the same. It worked!

dls34911 year ago
Is it possible to reverse the battery and use the tip of the scew or nail that has been rounded off ?
berteh3 years ago
great instructable! any idea to make this pressure sensitive? maybe using the pressure-sensitive pen of a standard tablet on the touchpad?

Thanks again!
dannkeo4 years ago
Oh, now that is creepy. That picture is my iPhone's current wallpaper.
sjoobbani5 years ago
 That's MY FAVORITE PICTURE!
udtst5 years ago

To give yourself a finer drawing tip you could put another ball on the positive (drawing) side also. Just make sure the tape can hold it in place and leave enough exposed to complete the circuit.

sasquatch147 years ago
now we just need to find a free program that's simple and you can make your own font with your own handwriting....besides that dumb fontifier that u need to pay for
isn't there a hidden font creator in windows xp?
frt975 Xamith6 years ago
yep, run>"eudcedit.exe" (without quotes) it's a character creator (not font maker)
Try fontforge
jongscx7 years ago
they used to make usb or ps/2 touchpads for desktops... has anyone seen anything like that recently?
Look up Wacom. I use a Wacom Bamboo Tablet.
yes, you can get them cheap at newegg.com use them for photoshop!
Xamith6 years ago
so you have to fix the dog (chain) by snipping off one of its balls? lol sorry, someone had to say it.
Arbitror Xamith6 years ago
Ha, LOL!
rasta_bhoy6 years ago
a really sweaty hankie would do the job as well. a damp one, not a wet one should work just fine. get one corner and twist it into a cone and you have a touchpad pencil. the salts in your sweat are transferring the electrical current from your body into the touchpad.
gamer7 years ago
why does a battery make it work?
dvoid_03 gamer7 years ago
The battery simulates capacitance (the body's faint electrical charge). That's why using a Q-tip or regular pencil won't work. No electrical charge. The wiki article for "Touchpad" talks a bit about this. http://en.wikipedia.org/wiki/Touchpad
Would it be possible to forgo the battery and conduct the body's capacitance through the pen instead?
srilyk7 years ago
oranges work but they're a little big to draw with ;)
pighair477 years ago
Pretty nice, do you know if there is a way to make one in an actual pen shaped object?
Thats pretty cool, :)
The bearings can be found at girardibearing.com
chimplicker7 years ago
Nice idea mate; simple and it works.

A couple of obvious suggestions:

1. find the smallest battery you can for increased precision (I would have thought that the +ve side of any tiny battery e.g. for hearing aid would work).

2. fiddle about and set your touch-pad to the right level sensitivity for drawing - after all you have a pretty limited space to draw in. It will be useful to set the sensitivity really high for initial sketching, and then lower it significantly for detail work (and maybe you could have a mouse also plugged in, at normal sensitivity for moving about the graphics pad, and using functions etc.){{{

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ryzellon7 years ago
The other day I had noticed that a battery on my touchpad would make the cursor move, and I was pondering what I could do to exploit this. Lo and behold: your instructable was on my front page!
tiuk7 years ago
I've often wondered if this was possible. Cool.