CARBONOLUX

Guillermo Ontiveros-González; Luzmila Davila-Roller; Alexzander Santiago-Martel · Zenodo (CERN European Organization for Nuclear Research) (2026) · DOI: 10.5281/zenodo.19899023

Resumen

CarbonoLUX is a low‑cost, open‑hardware optical system for measuring the concentration of light‑absorbing particles (LAP), such as black carbon and mineral dust, in melted snow samples. The instrument is based on an Arduino Mega 2560, two BH1750 light sensors, a NeoPixel LED ring, and a microSD module. It measures reflectance (R) and transmittance (T) of particles deposited on a quartz filter, calculates absorbance as A = 1 − R − T, and uses a non‑linear calibration model (A = A∞·(1 − e^{−k·m})) to estimate particle mass. Concentration is then derived from the filtered water volume. This repository contains all files required to build, calibrate, and operate CarbonoLUX, including: - Arduino firmware (carbonoLUX.ino) - Python calibration script (calibracion.py) - Calibration parameters (model.json) - Raw data for analytical characterization (blanks, repeatability, reproducibility, temporal stability) - Technical documentation: assembly manual, wiring diagram, bill of materials, photos - Analytical performance reports (LOD, LOQ, CV, accuracy, temporal stability) - License (CC BY‑NC‑SA 4.0) The data and code support the manuscript "The cultural fingerprint of Andean fires in the Anthropocene: a five‑year record of light‑absorbing particles on a Peruvian glacier", submitted to Elementa: Science of the Anthropocene. For non‑commercial research and educational use only. Commercial manufacturing or sale of the device is prohibited.