Difference between revisions of "Fingertip laser light sensor"

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== Overview ==
== Overview ==





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== Code ==
== Code ==



== Data ==

Revision as of 23:56, 8 February 2009

Original Assignment

I will provide you with a laser that emits a sheet of laser light and a phototransistor for detecting this light. You will investigate their use in developing a fingertip position sensor that senses distance to the finger based on reflected laser light. Your job is to design a sensor circuit and determine the analog voltage readings you get as a function of (1) your finger position and (2) the sensor's location relative to the emitter. You will likely display your results by communicating with a PC or by writing to an LCD (see, e.g., C Example: Serial LCD or C Example: Parallel Interfacing with LCDs).

Overview

Circuit

Code

Data