Editing Optoelectronics

Jump to navigation Jump to search

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.

Latest revision Your text
Line 2: Line 2:
 
''Note: this page could use a lot of work, can you help?''
 
''Note: this page could use a lot of work, can you help?''
  
== ElectroLuminescent Wire ==
 
See [[EL_Wire]]
 
 
== LEDs ==
 
== LEDs ==
 
LEDs are diodes designed to produce visible light.
 
LEDs are diodes designed to produce visible light.
Line 15: Line 13:
 
*Part of 7 segment display
 
*Part of 7 segment display
 
*Light source
 
*Light source
* sensor -- the [[multi-touch display#bidirectional LEDs]] article section describes how to use LEDs as a crude light sensor.
 
  
 
Links
 
Links
Line 26: Line 23:
 
# [http://alan-parekh.vstore.ca/index.php/cPath/4 Online LED store with good shipping rates]
 
# [http://alan-parekh.vstore.ca/index.php/cPath/4 Online LED store with good shipping rates]
 
# [http://www.evilmadscientist.com/article.php/throw Some thoughts on throwies] interesting notes on the resistor normally used with an LED.
 
# [http://www.evilmadscientist.com/article.php/throw Some thoughts on throwies] interesting notes on the resistor normally used with an LED.
 
== LED Arrays ==
 
 
Lots of LED arranged in a rectangle.  Useful for displays.  Getting cheap now.  Sometimes controlled by row and column time division multipluxing.
 
 
* [http://www.sureelectronics.net/goods.php?id=142 2416 Dot Matrix Red Display information Board] 24 by 16 led for about 12 bucks.
 
* [[PointLess LED Array]]
 
* Some [[multi-touch display]]s use LED arrays
 
* [http://www.seeedstudio.com/wiki/index.php?title=64_LED_Button_Pad 64 LED Button Pad] 8x8 array of RGB-LED-lit buttons, plus PWM drivers, designed to be driven by an Arduino-compatible board ... such as the [http://www.seeedstudio.com/wiki/index.php?title=8x8_RGB_LED_Matrix_Driver 8x8 RGB LED Matrix driver]
 
* [http://www.seeedstudio.com/wiki/index.php?title=RGB_LED_Shield 4x4 RGB LED Shield] Arduino shield
 
* [http://www.mignonette-game.com/ Mignonette game kit] 5x7 bi-color LED matrix and ATMega88 processor [http://www.makershed.com/ProductDetails.asp?ProductCode=MKCE5]
 
* [http://evilmadscience.com/tinykitlist/100-meggyjr Meggy Jr RGB LED Matrix Game Development Kit]
 
  
 
== LCDs ==
 
== LCDs ==
Line 45: Line 30:
  
 
* Parallel - Parallel displays connect to a microcontroller via a parallel interface( the bitwidth varies from 8bits to 32bits ).  Displays can have a much faster update rate then serial since they allow arbitrary graphs to be display.  The displays are typically much cheaper then serial display starting as low as $20.
 
* Parallel - Parallel displays connect to a microcontroller via a parallel interface( the bitwidth varies from 8bits to 32bits ).  Displays can have a much faster update rate then serial since they allow arbitrary graphs to be display.  The displays are typically much cheaper then serial display starting as low as $20.
 
* Bare glass - These displays do not have built-in controller and are essentially LCD glass with contacts for every segment and backplane. You need a special driver (e.g. PCF8562) to use these or a microcontroller with built-in LCD controller (e.g. ATMega169), however, displays with only one backplane could be driven directly from the microcontroller I/O pins or bank of shift registers which is more convenient (atmel has an appnote on this method). The advantage of this display type is its price - it is not much different from 3-4 digit LED matrices, and it surely outperforms LEDs in terms of power-efficiency.
 
  
 
Finding LCD displays is not easy since huge distributors such as Digikey have a limited selection.  
 
Finding LCD displays is not easy since huge distributors such as Digikey have a limited selection.  
Line 57: Line 40:
 
* [http://www.seeedstudio.com/depot Seeedstudio] - Free sourcing services with some stock of basic LCD.
 
* [http://www.seeedstudio.com/depot Seeedstudio] - Free sourcing services with some stock of basic LCD.
 
* [[Topway LCD]] - supplier from Shenzhen, Mainland China
 
* [[Topway LCD]] - supplier from Shenzhen, Mainland China
* [http://store.gravitech.us/lcds.html http://store.gravitech.us/lcds.html]
 
* [[TVI Electronics]]
 
 
LCDs are extremely commonly used as a [[Microcontroller User Interfaces]].
 
In particular, [[watch display]]s are small displays suitable for [[Open Source Watch]]es -- most of them are LCD displays.
 
  
 
== Photo Diode ==
 
== Photo Diode ==
Line 79: Line 57:
 
# [http://en.wikipedia.org/wiki/Photovoltaics Photovoltaics - Wikipedia, the free encyclopedia]
 
# [http://en.wikipedia.org/wiki/Photovoltaics Photovoltaics - Wikipedia, the free encyclopedia]
 
# [http://www.pvresources.com/en/solarcells.php Solar Cells]
 
# [http://www.pvresources.com/en/solarcells.php Solar Cells]
# [http://www.eevblog.com/2009/12/04/eevblog-48-solar-power-hope/ http://www.eevblog.com/2009/12/04/eevblog-48-solar-power-hope/]
 
  
 
== VFD: Vacuum Flourescent Display ==
 
== VFD: Vacuum Flourescent Display ==
Line 93: Line 70:
  
 
*[http://www.futaba.com/products/display_modules/module_products/character/index.asp VFD Module Character Displays]
 
*[http://www.futaba.com/products/display_modules/module_products/character/index.asp VFD Module Character Displays]
 
 
== Other Reading ==
 
 
*[http://www.epanorama.rackhost.net/links/opto.html Optoelectronics and optics page]
 
  
 
[[Category: Components]]
 
[[Category: Components]]

Please note that all contributions to OpenCircuits may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see OpenCircuits:Copyrights for details). Do not submit copyrighted work without permission!

Cancel Editing help (opens in new window)