LED Touch Sensor

What can you do with an LED? They only provide light right? Wrong! JustDIY has done some extensive testing and documentation of a phenomenon that is not very well known. LEDs can be used as an input device! “This is a collection of the work I’ve done with using the bi-directional properties of LEDs. I have also included links to information I’ve found on the subject and the project by an NYU research that inspired me.” Video of NYU Research Project

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6 Responses to “LED Touch Sensor”

1. I like spam Says:
   April 16th, 2006

   Wow, I have used LEDs for a long time in various projects and I never knew about this! I wonder why more (any) electronic devices don’t use them in this way?

2. doug pocius Says:
   September 12th, 2006

   This idea was researched by a major (at the time) optoelectronics company back in the late ’80s, and dropped for lack of a market and because performance goals weren’t reached (the usual reasons for killing an innovative idea). Perhaps the hacker community can succeed where Big Tech failed. Also, LEDs are much higher efficiency devices than they were back in the day.

3. Electronic Candle - Hacked Gadgets - DIY Tech Blog Says:
   August 15th, 2009

   [...] magazine which I unfortunately don’t have. I am thinking that the system is using the LED as a light sensor and detecting the bright flame from the match and the darkness that is produced when it is squeezed [...]

4. Electronic Candle | Gadget Nomad Says:
   August 15th, 2009

   [...] magazine which I unfortunately don’t have. I am thinking that the system is using the LED as a light sensor and detecting the bright flame from the match and the darkness that is produced when it is squeezed [...]

5. Electronic Candle | Gadgetip Says:
   August 17th, 2009

   [...] magazine which I unfortunately don’t have. I am thinking that the system is using the LED as a light sensor and detecting the bright flame from the match and the darkness that is produced when it is squeezed [...]

6. shashank Says:
   January 29th, 2012

   i am actually planning to use a similar concept but am not able to find a proper start to the project . . . . . can any1 ova here be generous enough to help me out!!!

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