This project is in the building phase for over an year because it is in a permanent change and it`s inspired from military models. Mechanically speaking it`s not the ideal model because it is taller, heavier and it cannot climb big angle hills because the position of the batteries is the main problem. I have used hobby components, Chinese connectors and other electrical parts, 30 years old used Sony and military russian components. The video camera is a dual Arecont CCD day/night, 3MPix/1.3MPix made in USA. Unfortunately it send over MJPEG compression and it uses 5-6 Mbps at 1fps/3Mpix. I have spent a few months to build and optimize the DC/DC convertors. Other 2 projects showed me that the DC/DC convertors have a crucial role in the power usage.