I decided to have the prototype of the frame block 3D-printed in a company near me. It cost about 80 euros, pretty expensive but I was busy and just wanted the project to move forward. The material is nylon, PA. By default color would be whitish, but I wanted the frame block to be black… Continue reading My proto mechanics, part 2
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My proto mechanics
My friend used to say "Good optics equals good mechanics!" I don't think he was wrong so let's be careful here 😉 The task here is to position the front lens in a correct place in front of the sensor and to keep it there securely. And also to provide options for all sorts of… Continue reading My proto mechanics
Choosing the front lens
It's time to add some optics to the mini-spectrometer project. This post covers basics for choosing a front lens. Purpose of the front lens is to collect light into the spectrometer entrance slit. Since the sensor of the mini-spectrometer has already proven to be very sensitive and I want to keep the whole system mini-size… Continue reading Choosing the front lens
The schematics
Here is the schema of the spectrometer electronics including both the PIC24 and the sensor board. I just noticed that the six pin connector and related wiring to be used for programming the PIC is missing, will be added soon. Sorry. mini_spec_schema_ver_02 Please report errors.
The Spectrum
Finally I can show you a spectrum. It's a HeNe laser beam scatterred from a steel surface, and background removed. In the heat of working I was not able to come up with any other setup where the spectrum peak would not go over the range. I wonder if the peak will be narrower with… Continue reading The Spectrum
Experimental Photonics 