R2C2 Electronics box with fan

This is a ventilated compact box for the R2C2 32-bit ARM Electronics controller. Two parts plus buttons and fan box.
It has been pointed in the R2C2 Support Google Group out that sometimes the passive coolers aren't enough to cool the drivers, so the print sometimes waits for them to cool and start again, making frequent stops. This is easily solved by adding a fan, the box inner fins will guide the airflow right where it's needed.