This Arduino-powered spectrophotometer uses a little prism to create rainbows

Invented back in the 1940s, a spectrophotometer is a scientific instrument used to measure how different wavelengths of light are absorbed by a sample. Daniel Hingston decided to build his own spectrum analysis device as a fun Arduino experiment, outlined in the project write-up and in the video below. Inside the 3D-printed device, a servo-driven rotating … Continue reading This Arduino-powered spectrophotometer uses a little prism to create rainbows