Automatic Wall Painting Robot with Multiple Colors

The main aim of this research is to design and develop an automatic wall painting robot for painting multiple colours. In the designed robot, an automatic painting mechanism has been made for painting two different colours by the use of an air compressor and spray guns. Also, a vertical and horizontal systems have been made for the painting mounting of the spray guns. The performance of the developed robot was tested by five different testing which were DC motor testing, Stepper motor testing, Paint testing, Liquid level sensor testing, and efficiency testing. The designed project has the ability to paint an area of 0.270 m2 in 26.760 minutes which has an accuracy of 96.476%. The efficiency of the painting system has an efficiency of 96.296% in terms of the painted area. The painting efficiency increased by decreasing the separation distance between the wall and the robot and fixing a pressure to be 4.5 bar. The overall efficiency of the entire system has been obtained which was 83.987%. The system has a strong mobility system for reducing the vibration generated by the stepper motors. There were three CNC linear lead screw 500 mm each fixed on the mobility system of the hardware. Two lead screws were fixed vertically and one lead screw was fixed into the two vertical sliders horizontally. The system uses a rocker switch 3-way to either select one of the two colors to be applied into the wall or leave the slider to continually move till it reaches a specific area to select the color to paint that special area.