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arminstr / reremeter

This repository contains the software and hardware for a low-cost and handheld system for the identification of plastic types based on discrete near infrared (NIR) reflectance spectroscopy.
https://www.researchgate.net/publication/337868860_Identification_of_Plastic_Types_Using_Discrete_Near_Infrared_Reflectance_Spectroscopy
GNU General Public License v3.0
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LED Wavelength #10

Closed NobleOMD closed 2 years ago

NobleOMD commented 2 years ago

In your BOM you are using 1206LEDs. How are you controlling the wavelength for each LED, is it a filter, by sorting (like with resistors) or actually a different LED spec per wavelength?

arminstr commented 2 years ago

The system uses discrete Near-Infrared LEDs. Therefore you will need LEDs with different wavelength specifications. We previously sourced them via DigiKey. The manufacturer is Marktech Optoelectronics.