There are a couple other components inside. A UV lamp at the back of the box shines on a 96-well test plate, which is inserted into the box using a door and ramp built into the front of the box. A square of Lego bricks on the top show where to place the smartphone, which uses the camera to take images of what’s inside the box. Free smartphone software is then used to perform color analysis on the images, which has proven to be highly accurate.
The team posted all of their charts, guides and analytic code on GitHub, in the hopes that that combined with the readily available materials and free software will foster widespread adoption of the technology.