Build It: The Electronic Post-It Note

The propeller, also from Parallax, would be a great basic stamp replacement for this project. And at $20 for the proto board, it's a lot cheaper too.

This is the 3rd time I've tried to comment on this -- maybe this time your comment button will work,

Anyway, the tech here is fine. Well... the author admits that the hadware is slow, but the concept apparently works.

In practical terms, it seems to be like a WIndows Vista toaster -- sure, you could make one, but why would you.

Fisher price makes a toy that does this function. It consists of a grid of cells containing metal particles and a thixotropic liquid. (think mayonaisse). You use a magnetic stylus to bring the dark colored surface of the cell -- allowing you to write or draw. The metal is held in place by thixotropicity (all right, I made up that word).

There is also a slider to 'reset' the display.

Works pretty good-- costs 8 bucks or so!

This is a cool project, but very price restrictive. Jhickner makes a fantastic point! The Parallax "Board of Education" is way overkill for this project... the Propeller board looks like a perfect substitute; and from what I understand it already decodes PS/2-- so you can leave out the PS/2 decoder chip as well!

That will cut down the cost of this project to around $75, which is much more feasible than $175...

Another thing you could save $$$ on would be the LCD-- if you're only using the 2 colors there's no need for a full color LCD. Sparkfun sells a B&W 128x64 LCD for only $19.95 with a built-in controller. That would shave another $20 off the price.

Sparkfun B&W LCD:
http://www.sparkfun.com/commerce/product_info.php?products_id=710

Even though it would be huge, is there a way to do this with an old laptop? What extras would you need past a laptops screen trackpad motherboard etc...

Where are the instructions to attach the voltage regulator and electrolytic capacitor to the screen??? All the article says is Follow the data sheet instructions on Sparkfun.com to attach...but there is no link or url locations and I cannot find anything about it...does anyone know where I could locate this? Thanks...you can email bweibling at (@ not used for spam purposes...) gmail.com thank you again!

Well i think this is cool but if you r some one like me couldnt you just take a laptop mother board take wht you need off and hook up a smart pad and wht ever you call it

and i would need a huge screen

I'm interested in your product, and I think that some components can be find on www.seekic.com and www.chinaicmart.com

If you work for a company and want to reduce the wastage on post its to one another (because you know people still do that, rather than email!) then could you create this so that you can 'Share' your note with one another? That way it would be multi functional- but would also need a wireless port? I'm not good with the mechanical side, but can see that an office/company/organization structure could use this to save their own post its and then also send ones to their work colleagues- especially those who work in reception.