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Proximity sensor to control rheostat for 12vdc - Looking for advice

Former Member

I'm very new to audrino and am frankly intrigued with it's depth of possibilities.

 

Could someone suggest a config that would control the intensity of a LED string as you moved towards and away from a proximity sensor. From the Youtube videos I've been looking at, it looks as though a capacitive proximity sensor might be appropriate solution.

 

I'm eager to jump into this project ... I'd just appreciate if someone could recommend the right audrino kit to get and how I might accomplish the rheostat incorporation piece.


I'm a graduate art student and I've constructed lightboxes using an led strip powered by a 12v battery. I'd like to have have these boxes be very dim until someone approaches the lightbox (hanging on the wall) then it would become progressively brighter as the person got closer.

 

Thanks everyone. I look forward to learning a ton.

 

Hastings

Parents

  • Strikes me a capacitive sensor would have a very limited range, It might be better looking at purchasing  a prebuilt ultrasonic distance measuring head and driving a PWM or amplifying the output to drive the outputs directly if analogue or using a d/a converter and then driving a PWM or an amplifier. Either way a basic PIC micro from Microchip would do the job assuming you have the time to learn the programming of it and access to a programmer.

    Go to your local Maplins store - they sell a kit which will program a PIC and allow you to play for about £30 - £40.

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  • Strikes me a capacitive sensor would have a very limited range, It might be better looking at purchasing  a prebuilt ultrasonic distance measuring head and driving a PWM or amplifying the output to drive the outputs directly if analogue or using a d/a converter and then driving a PWM or an amplifier. Either way a basic PIC micro from Microchip would do the job assuming you have the time to learn the programming of it and access to a programmer.

    Go to your local Maplins store - they sell a kit which will program a PIC and allow you to play for about £30 - £40.

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