The initial idea was to make a robot named “DrawBo” which can draw and teach drawing. But now this idea has been broadened to drawing on the glass, or on the fabrics .Apart from this, the robot can make a sketches and drawing of anything and everything.
The artificial intelligence of DrawBo comes from special drawing and sketching algorithms which make it a complete artist. The top and bottom or left and right movements of DrawBo are controlled by small size and light weight stepper motors.
The precision, accuracy and speed of drawing (or sketching) are based on size of the pulleys. Smaller pulleys are precise but larger pulleys are faster. Some Mathematical calculations helped in arriving at the optimum diameters and pitch measurements of the pulleys.
The latest Bluetooth 5 technology and ARM Cortex M4 present in the Nordic nrf52XXX series form the backbone of DrawBo. The PWM unit of Nordic nrf 52XXX was interfaced with stepper motors.
The DrawBo mobile application, which is available on google playstore for android and iOS, makes it easy for anyone to play with DrawBo.
DrawBo can do following tasks:-
Writing/Drawing on a T-shirt:-
Hang the T-shirt tightly on a vertical surface. And tell “DrawBo” whatever needs to be drawn on T-shirt through the mobile application.
Sketching & Portrait:-
It can make a sketch or portrait of any image.
DrawBo sketching a dog
Drawing :-
In fact, the mobile application has a drawing library which has a vast collection of images. These images have been categorised into easy, medium or advanced level as per the level of complexity. Select any image from the internet or from the drawing library. And the robot will draw that.
In fact, it is intelligent enough to teach drawing. Its special drawing algorithms split the image into several simpler steps. It then takes a short pause after each step so that it is easier for learner to grasp the knack. In this way it teaches drawing.
Working:-
Hang the Drawbo on a white-board or any vertical surface with help of threads and suction-cups. Select any feature like fabric drawing, sketching or drawing on the mobile application. As soon as the feature is selected, DrawBo synchronises with mobile application via Bluetooth and performs that task.