LED Sensing ~ BI-Directional LEDs Part – I

Sunday, 3 May, 2009 § Leave a comment

In my quest to find other methods of input detection for multi-touch and multi-modal hardware i came across another technique made famous by Jeff Han it is the use of LED s as bi-directional sensors. This technique is in no means new, it know fact that LED s can behave in such a way that, they act as sensors, when they are reverse biased. The theory behind how this all works is explained below.

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touchEarth & FL_Earth Previews

Saturday, 30 August, 2008 § 4 Comments

touchEarth Preview

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