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Analog Proximity Sensorby Al Margolis, founder www.HobbyEngineering.comThis circuit uses a Sharp IR Distance Sensor and an LM393 comparator IC to trigger a small vibrating motor.Whenever I get calls starting "how can I use one of your distance sensors to ..." I immediately launch into my micro-controller and ADC lecture. This circuit was initially developed at the request of a customer who wanted to build an electronic "white cane" for a science fair project. This customer was particularly insistent in complaining that "there has to be a simpler way" when I started my standard lecture. He was right and this is it. Since then dozens of customers have built a wide variety of projects using this simple circuit. Even with the hand-drawn circuit layout diagram. Breadboard Layout Parts List
End of ProjectThis application note is a work in progress. If you found it interesting, awful or incomplete please let me know by sending email to al@biznode.com. |
The content on this page was updated on 09/27/2004