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I need advice on a project.

mikedavis

Everyone,

 

I have an idea for a project, and I need some assistance. 

 

I would like to use the RPi (or whatever is most appropriate) to create a light detector.

 

A long time ago, I built a circuit that had a cadmium selenide detector.  When light hit it, there was a change in its resistance, and I could use the difference between the voltage in and the voltage out to determine how much light the detector was seeing.

 

I have breadboard that I can use to get the circuit going.  I would like to be able to use the RPi to have a computer capture this information so I could run an experiment over a long period of time.

 

What materials would I need?

 

Mike Davis

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  • 0

    The Arduino is a great tool, and it can be used very easily with sensors such as a light sensor that you mention. The real challenge is going to be whether or not you are able to get the output you really want with the Arduino.

     

    I think I may have interpreted your question slightly differently than DAB. From what you wrote, do you want the Rpi to be the cmputer reading the end data, and then writing that to a file? If so there are a number of somewhat complete posts online about using the Pi for serial communications with the Arduino. I think networking it with an arduino is probably your best bet, but do let us know a little more about the project before we suggest anyhting with certainty.

     

    Hope this helped

     

    John Moosemiller

  • 0 in reply to bltsandwich1

    So I posted a document in the Documents section that gives instructions for making the circuit.  I would like to use the appropriate materials to hook a computer up to that so I could make continuous measurements at regular intervals.  I hope that helps.

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