Raspberry Pi Cluster - Macro

This is a macro shot of a cluster of Raspberry Pi Zero single board computers. There are four, piggybacking on a Pi 2 main board which acts as the controller. The overall idea is that they can be used to perform distributed computations - but the reality is that they are used for photographic projects and collecting dust :-P

Not sure what the theme for today's Tiny Tuesday actually is - I'm sure that I've missed it somewhere - so I'm probably miles off !