At the time of build this CHEERSON CX-10 modded with FPV equipped wireless nano camera consider to be world smallest home build civilian drone/FPV as by date on August 2014. The project meant to be experimental to prove concept of Nano drone flight with basic remotely video operated surveillance is possible. The quad rotor size is extremely small 40mm x 40mm cubic in size able to fit almost any place inside your pocket or match boxes with full flying weight below 15 gram.
With current setup the Nano quad rotor only capable for indoor flight geared for fun and tiny curiosity in mind. It was quite challenging to build but as for me and our sponsor BANGGOOD.COM we did enjoy proving something that was out of the box ideas. Oh yes it is cheap to build too at just under USD$50 for impressive jaw dropping budget Nano drone tech. For more info check at FPV/UAV build logs. Click here to view build log and setup of this model.