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Finally, after encountering every possible problems, the second version of the prototype is ready, working and has already been tested!

The new features of the prototype include :

  • A red LED to account for scattering has been added next to the blue LED.
  • All of the electronic components have been added to PCB’s and can be easily unsoldered and changed
  • The position of the excitation and scattering LED underneath the sample have been set so that the vial will be completely illuminated, independently to the illumination angle of the LED’s (minimum = 20 degrees)
  • The circuit has been adapted to control 3 LED’s and can supply a current of more than 1 A to each of them if needed.

These changes are a big step for the project and will allow us to test and understand our prototype much better.

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