4 In 1 Solar Powered T4 Robotics Kit4 In 1 Solar Powered T4 Robotics Kit Build this kit into not one but 4 different projects. Includes detailed instructions to assemble all the included parts which can then be rearranged into a robot, t rex dinosaur, drill vehicle and rhino beetle. All versions use the included solar panel which will perform different movements when placed in the sun. A great introduction to solar power and electronics. No soldering required. AL K1123