The Mothbox itself is an open-source, somewhat low-cost and highly portable setup for tropical field biodiversity studies: it consists of a flat surface, a light, and a camera to document what comes to the light and lands on the surface. The team is still investigating ways to make it more cost-effective, durable, and to help it process the images autonomously, like counting or even identifying moths for the researcher. Work is ongoing and everything is currently open-source. You can find out more from the forum pages:
MothBox