In our case, we only want to change the direction to allow the device to move forward, backward, and turn left and right. Introduction and Motivation In the tennis and sports market, there are very few advanced electronic devices assisting in the feeding and picking of tennis balls or any other kind of balls. When we moved the read sensor code to right before the RearWheel and FrontWheel state machine functions, we noticed that the reaction times between the sensor is read and the motor movements have improved from about two seconds to less than a second. Newgy Pong-Pal By having a Pong-Pal in hand, it makes the task of pick up ping pong balls much faster and easier. The lower right side of the front panel shows four different variables.
After that, it turns to the right for one second. Robots are used in many fields as discussed below 2. The submission must include an image or video of what was built, as well as a description on the tech built. On the software end, our state machine was fully functional and needed no human maneuverability to move the device. Moreover, we ensure that the motors rotate at a moderate speed and run smoothly such that it will have enough time to change direction before hitting any player or wall. In our case, we only want to change the direction to allow the device to move forward, backward, and turn left and right. If the pulse width is under a certain time frame, the motor will drive in a clockwise direction.
At first, the servo motors we used seemed reliable and dependable. System Setup Figure 1 shows the system flowchart. A complex ball-search algorithm will be implemented to eventually pick up all tennis balls within an enclosed area with fairly high walls. The ball lifting is considered as a basic practice in the ball sports such as tennis or soccer. The research showed that the robot can serve the function of collecting Ping-Pong balls efficiently. You can store and travel with this Kollect picker upper effortless as it is having a removable head and expandable handle. So, while you are resting after a harsh training, you can use this picker upper to pick the balls on the floor, or balls that are rolling or jumping all over the floor.
Conclusion Expectation of the product The final product is below our expectation only because of the unreliability of the motors. Chapter 5: Results and Discussion This chapter provides a result of the project in which the key points of the project are Discussed and any specific conclusions are drawn Chapter 6: Recommendation This chapter is an analysis of the project in terms of overall performance and working. Since six motors are used, and they drive much power from the batteries, they can only be used for 30 minutes. Pulse-Width Modulation for Motor Control The servo motors can be controlled by generating a 50-Hz square-wave pulse each period is 20ms to the input of motors. With further development, a larger tennis ball collection system could support full-scale collection of tennis balls on real operational tennis courts. Decisions of Sponsor are final and binding in all respects.
The robot was developed with the aim of saving the time and energy of the tennis player from manually collecting the tennis balls after training sessions. They act as the front sensors. Two general types of servo motor circuits were used. The front wheels pick up the tennis balls, and the rear wheels move the whole tennis ball picker. For all balls that laying on the floor, you can just put the tool over them and they will pop right into the net.
Other than this device, there are no directly competing products in the market that involve automatic ball-picking? This causes more battery packs than we would have liked, but the battery life should be long enough so that they do not have to be replaced as frequently. One patent involved a long descending gutter placed against the back wall of Reis Tennis Center. Easily portable, this Wilson Tennis Ball Pick-Up Hopper is designed with handles that convert to lockable legs, adding a versatile element. Hardware Setup Servo Motor Circuitry Our wheels and front side rotating blades are all driven by Parallax Continuous Rotation servo motors. There is a potentiometer inside the motors, and the motion of the motors is controlled by the potentiometer and the input pulse width.
On the tennis court, we often see the beautiful drives, chops, volleys and smashes of professional tennis players Pereira et al. Our project aims to devise an easy-to-use, low-cost autonomous ball-picking device that helps pick up tennis balls, or perhaps any other balls of similar weight and shape, over an enclosed tennis court area. The downside is that the servo motors are difficult to calibrate and can often times be unreliable for extensive continuous motion. Nowadays, the design on Ping-Pong balls collecting robot cannot combine autonomous control with remote control. A design is proposed on the system of Ping-Pong balls collecting robot with autonomous and remote control, based on embedded vision processing.
However, when a motor is glued onto the device, its direction and speed of motion change almost randomly. It also contains overview and recommendation of experts Chapter 1 Introduction Professional tennis matches can last upward of 3 hours, often with little more than 10 minute of rest in- Between sets. The bot comes with an app, which allows you to specify where on the court you want to pick up balls. It can make the picker less bulky, and the batteries can last much longer. Figure 6: 2-ms pulse-width input to the motor for moving counter-clockwise Figure 7: 0.