BranJaq S1

Small (one tube) version. Designed for ToyREP 3D printer that I have remixed a little bit.. http://www.thingiverse.com/thing:945156

About extruder There is not much to say, It's simple, with home-made cooler for filament. On the extruder is servo and the micro switch for auto bed leveling. Care should be taken on it when programming Arduino FW.