Guadagnini et al. (33) built a photometer consisting of a red LED (wavelength 620 nm), a BH1750 sensor, controlled by an Arduino NANO, showing applications for absorbance measurements in CuSO 4. dos ...

A photometer is an instrument that measures the strength of electromagnetic radiation in the range from ultraviolet to infrared and including the visible spectrum. In this program, we'll show y ...

A Low Cost Spectrophotometer for Nano Particle characterization built using Arduino and Embedded C to control an LCD screen, a servo motor, indicator lights, an IR Remote control and more ... - ...