1272Views5Replies

Author Options:

Tiny Screens (Like LCD) Answered

Im trying to make my own didgital watch that can show weather and all other stuff as well as tell the time. I need the screen to be cheap, thin, and a little bigger then a quarter (watch size.) Anyone have any ideas as to waer I can get screen this size?

5 Replies

user
schorhr (author)2007-09-12

It all depends on the type of thing you want to accomplish.
If you want to use a microcontroller like the avr atmel atmega/attiny or the pic series, you might want to check out if there are well documented projects and use the displays used there, just to have a base to work from.

http://free-vz.htnet.hr/Ivica-Novakovic/Nokia%20Lcd%20Termometar.htm

http://www.100acre.org/elec/nokia_lcd/

http://www.e-dsp.com/controlling-a-color-graphic-lcd-epson-s1d15g10-controller-with-an-atmel-avr-atmega32l/

http://www.serasidis.gr/index.asp

If you just want to play arround, you could use a LED dot-matrix display (as in http://www.techdigest.tv/2006/04/dot_matrix_watc.html ). It would be enough for simple scroll-through text, crude symbols and the time :-)

While even a small attiny can charlieplex 5x4 LEDs, it might be better to use a controller-IC to controll a "screen" with higher resolution.

Select as Best AnswerUndo Best Answer

user
Aerandirel (author)schorhr2007-09-13

i had an idea of making a basic smart watch, except with the clock dial as an lcd screen. Seems really too advanced for me though im just a noobie...

Select as Best AnswerUndo Best Answer

user
schorhr (author)Aerandirel2007-09-13

Rome was not built on one day :-) My advice would be that you look into microcontrollers such as the atmel avr "attiny" series for example. They are inexpensive, programmer kits or diy-plans are inexpensive, and many tutorials using different programming tools and languages make it easy to get started. Making such a watch without a microcontroller is probably nearly impossible. There are timer and clock ICs, but those usualy drive 7 segment displays such as those in simple calculators, not graphic displays. But if you describe your project in more detail, maybee someone has a simple solution for the electronics. Anyway, back to microcontrollers, its a fun hobby, and they can do so much. Start by switching a few LEDs for example which can be done with just a handfull of components.

Select as Best AnswerUndo Best Answer

user
zachninme (author)2007-09-11

Sparkfun has a $20 "Nokia knock-off" screen, 128x128 pixels, color, about 1inx1in...
I don't know if thats what you want or not...

Select as Best AnswerUndo Best Answer

user
Aerandirel (author)zachninme2007-09-12

yea something that size is perfect, doesnt have to be good resolution, just something that can display like rough picture of a cloud or something, or display text.

Select as Best AnswerUndo Best Answer