Project Overview Introduction Clawbot Build Design Modification Design Development Programming Sensors Advanced Sensors Open design challenges – gather and dispense Project evaluation

Todays Challenge Controller operation Autonomous OR Gather and dispense Today’s challenge is to collect in balls scattered around an arena, store them on its own chassis, then move to a scoring zone to dispense them to score points. The brief sets out the following task: “Design and programme your robot to collect in balls from the ground. It will need to store as many as possible on its body safely without falling off as it drives around. The robot must do this either controlled or autonomous, and the dispensing of the balls at the end can either be controlled or autonomous. The robot can go to the scoring zone any number of times within the time limit.” In your teams, discuss the challenge and decide if you want to create an autonomous or controller operated robot solution. Controller operation Autonomous OR

LESSON 11

LESSON 11 STARTER Learning objective: Analyse the design brief. Establish a range of solutions for a robot that consider autonomous and controller type robots. Propose, build, test and present a working solution as a team. In your Notebook… Task 1: Note down all the elements of the challenge and draw a detailed drawing of the arena you are going to compete over set down by your teacher. Things to note: - dimensions of any items you need to interact with (objects and parts of the arena) - number of objects in the arena you need to interact with - the time limit you have to complete the challenge - any initial issues you have identified based on your existing robot build Key words: Programmable, environment, design, manufacturing and application

Gathering & dispensing Challenge The Balls Your robot will need to be able to grab hold of one or more of the VEX balls (either the rugby balls or the small footballs depending on your school provision). You will need to measure the diameter of the ball, and if shaped like a rugby ball, you will need the overall height also. Remember, you are tasked with collecting many of these items and storing them.

Gathering & dispensing Challenge The Ping Pong Balls Alternatively, you can complete this challenge using a different sized and shaped ball. For instance a ping pong ball would be a great challenge due to its size and it being so light weight. When considering storage on your robot, you will need to remember you not only need to put items in the storage container, but empty the storage container into the scoring zone. The above robot was designed in Autodesk Inventor using pre built VEX Robotics parts to test and prove an idea before committing to parts. If there is time, you should consider this approach in your Notebook.

Gathering & dispensing Challenge Setting out the arena Your teacher will set out the arena for you to compete over. This will allow you to plan how you intend to go about the challenge, and gather the most items within the time scale. The above shows you the VEX Classroom Competition field and Swept Away game, where football and rugby balls are scattered around the field and robots collect them in and score them into a central scoring goal.

Gathering & dispensing Challenge Designing your robot Bracket stops balls falling out As a team you need to build a robot. You need to decide the following: In two minutes will your robot: - gather a few balls in and score them. - gather one ball in and score it many times. - gather balls into a storage compartment then dispense them later to score. - gather a one or a few balls into a container then dispense them later to score. Limited to four balls at any one time Dispenses very easily onto a ground scoring zone

Gathering & dispensing Challenge

Gathering & dispensing Challenge Challenge Time “Design and programme your robot to collect in balls from the ground. It will need to store as many as possible on its body safely without falling off as it drives around. The robot must do this either controlled or autonomous, and the dispensing of the balls at the end can either be controlled or autonomous. The robot can go to the scoring zone any number of times within the time limit.”

LESSON 11 PLENARY As a class, let us consider the following questions? A. Why did you choose autonomous/controller? B. What was the benefit of choosing the other in hindsight? C. What aspects of controller and autonomous could you combine for a better solution? D. What made autonomous/controller hard to achieve the perfect solution?

Summary Today you have: Learning objective: Analyse the design brief. Establish a range of solutions for a robot that consider autonomous and controller type robots. Propose, build, test and present a working solution as a team. Today you have: Learnt to discuss in teams the analysis of a design brief Developed solutions for a robot challenge using autonomous and controller solutions Developed a robot solution which can be tested and evaluated