hobby #159
LED Absorption Spectroscopy
Building a DIY spectrophotometer using discrete LEDs across UV-to-IR spectrum to measure absorption and transmission spectra of liquids, dyes, and pigments. Combines semiconductor selection, photodiode amplifier circuits, and calibration against known standards to analyze natural dye chemistry, reef tank trace elements, and lichen pigment composition.
Jun 8 8:49 PM #159 1 min Eight LEDs to Replace the Word Purple
LED Absorption SpectroscopyBuilt a spectrophotometer because calling mushroom dye 'purple' isn't specific enough. Eight discrete LEDs, one photodiode, and the end of subjective colour.
code-a-day tied to this hobby
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