Low-Cost Multispectral Imager

A low-cost multispectral imager was built using a multiwavelength LED PCB (light-emitting diode printed circuit board), 3D printed housing, and a monochrome camera, and it was controlled via National Instruments LabVIEW software coupled with some simple electronics. Multivariate data analysis was performed using freely available software packages. The device is sufficiently simple in its construction and operation to be of use in many undergraduate courses concerned with topics such as spectroscopy, chemometrics, and colorimetry.