This app is an text book that lectures a manufacturing method of an original link mechanism robot "MVictory" gently. A robot with six legs drived by only one motor is completed. The materials are following kits of "Educational Construction Series" by TAMIYA inc. https://www.tamiya.com/english/e-home.htm ・Long universal arm set (ITEM 70156) 3 sets ・Single gearbox (4-speed) (ITEM 70167) 1 set ・R6/AA/UM3 battery box with switch (ITEM 70151) 1 set ・Universal metal joint parts (4pcs) (ITEM 70164) 1 set And an instant (cyanoacrylate) adhesive, two UM3/AA batteries. Please check that you can purchase these before downloading this app. And more, M3/M2 millimeter screwdrivers, and some tools like pliers are required. You can manufacture a robot easily without difficult hole processing and dangerous cutting work. The app leads you to complete a robot by careful guides with some videos.