I am kicking around an idea for a cell phone based water sample spectrometer

It would be used for testing the water in my aquaponics system. I am not sure that the stuff I want to test is even detectable with the hardware I am going to use, but working out the mechanics is what’s challenging for me at the moment. The genisis for this idea is at http://www.backyardaquaponics.com/forum/viewtopic.php?f=50&t=11840&start=150#p345100

The process is to use the LED flash of a smartphone camera, a bit of a CDr or DVDr as a diffraction gradient, the camera, and the processing power on the phone. You measure distilled water, and then the sample and compare the two to see the differences.

The drawings are a quick render of the OpenScad file. The half-circle is a pivot that will hold the diffraction gradient so I can play with angles. I also need to add a spot for the test tube somewhere along the thin light slot.

The whole thing will be parametric, and customizable to any given smart phone.

Well, this is the plan. I am going to sleep on it a night, see what I dream up on it, and maybe send it to my printer tomorrow.

In album


 


 


 

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4 Comments

  1. Yeah. Mine is an adaptation of his. I'd thought of my idea and found his stuff as the best implementation i could find. My idea was tweaked with some of his ideas.

  2. Yeah. Mine is an adaptation of his. I'd thought of my idea and found his stuff as the best implementation i could find. My idea was tweaked with some of his ideas.

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