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Thread: FSR Kit

  1. #1
    ianham Guest

    FSR Kit

    HI,

    I was thinking about purchasing a FSR kit to be used as a LED dimmer. Basically I am going to mount this at the bottom of my cup holder in my car with a lexan disk over top. When I put a drink in the cup holder the LEDS will light up then when I drink some the leds will dim eventualy going out. What kit would you recomend and will this even work?


    Thanks...

    Ian.

    Also isn't shipping to Canada a little pricey?
    Last edited by ianham; 11-12-2008 at 08:48 PM.

  2. #2
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    Re: FSR Kit

    Hi Ianham, welcome to the forum!

    You would also need a microcontroller of some type - an Arduino would be my suggestion.
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  3. #3
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    Re: FSR Kit

    ianham: Freight M'mmm Try living in New Zealand and getting items from the rest of the world, UPS and FedX are outrageous in their freight costs, I now talk to the companys I deal with before buying to get a better freight rate and usually we strike a deal, If not I go somewhere else. Since being on several forums I have struck some really neat friends [Personal] and they have offered to send my gear from the states to NZ at a considerable reduction in freight, as long as you have something like PayPal it's as easy as 123. At this point I must say a very big thank you to those people that have helped me with sending my products to NZ, Thank you.
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  4. #4
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    Re: FSR Kit

    A trick to get around the freight is to have it shipped to a friend in the states who transfers it over to regular mail for you. Unfortunately, as a company, we have to stick to UPS.

    A cup full of liquid is pretty light for those FSRs. You might be better off rigging up a simple switch and using a light that softly turns on and off.

  5. #5
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    Re: FSR Kit

    A strain-gauge might better answer the design criteria, of indicating the amount remaining though... My digital scale will indicate hundredths of an ounce, and it employs a digital strain gauge (AKA Load Cell). I haven't gone looking to source them though.

    Actually, an Analog Load Cell might be even better on a microcontroller. You should be able to build a simple amplifier and increase sensitivity.
    Last edited by Adrenalynn; 11-13-2008 at 11:31 AM.
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  6. #6
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    Re: FSR Kit

    Wouldn't a basic R/C (Resistive/Capacitive) circuit handle the fade? A micro switch to charge the circuit and turn on the lights.

    Or do you mean that a full cup gets full lights and lights out for an empty cup?

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