According to the guidelines issued by the Finnish Road Administration, road traf- fic markings must be painted on the road surface mechanically. As a result of this policy, the client commissioned this thesis. The aim of the thesis was to deve- lop a prototype of a product package tailored to road marking, which included a working application that acted as the user interface of the device, controlling the microcontroller. The end users of the product will be road marking contractors. The thesis progressed using agile methods, as weeklong sprints. The sprints al- lowed for a quick response to potential challenges and changes. A 15-minute “daily Scrum” was also held daily to track progress and seek new perspectives on tackling challenges. The actual development work of the thesis consisted of the development of an Android-based application that controls the microcontroller that manages the prin- ter which prints the sign. The user interface was developed in collaboration with a client who represented the users of the final product. The boundary conditions set by the client and the limits set by the authors were considered in the design. The aim was to establish communication between the application and the printer wire- lessly, without network dependence, so Bluetooth was chosen as the connection provider. The microcontroller selected in the prototype controls the servomotors that controlled the two axes of the printer that moved in the 2D plane. The axes were used to move a pen in the prototype, which modelled the trajectory of five different road signs. As a result of the work, a working prototype of the application was created and with the help of this it was verified that the proof of concept is a functional solu- tion to be implemented in production use.
