Street art is gaining popularity more and more, and this is understandable. Boring skyscrapers of the same type do not cause delight and interest among the population. But painting on the walls is not the easiest job, and not everyone is allowed to hang on top, knowledge of safety must be at the highest level. A robot artist created by Estonian inventor Mihkel Joala should minimize risks. The original mechanism draws huge graffiti, moving along the walls of high-rise buildings on cables, and it is controlled through a computer. One of the latest creations of this couple is the transformed pipe of the thermal power plant in the city of Tartu. To create a 30-meter drawing, thirty spray cans of paint were required (5 are used simultaneously). For everything about everything, the robot artist took fourteen hours. However, as the inventor hopes, this is not the limit. In the future, Mihkel Joala plans to improve the robotic workaholic to create 100-meter graffiti and set a world record.