ADVANCED EV3 PROGRAMMING LESSON By Droids Robotics PROPORTIONAL ULTRASONIC WALL FOLLOWER © 2015, EV3Lessons.com, Last edit 11/17/2015.

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Presentation transcript:

ADVANCED EV3 PROGRAMMING LESSON By Droids Robotics PROPORTIONAL ULTRASONIC WALL FOLLOWER © 2015, EV3Lessons.com, Last edit 11/17/2015

 Learn how to use proportional control with the ultrasonic sensor to follow walls  Prerequisites: Data Wires, Proportional Control, Loops, Math Blocks, Sensor Blocks Objectives © 2015, EV3Lessons.com, Last edit 11/17/2015

Challenge: Proportional Wall Follower  Challenge: Write a wall follower program that uses the ultrasonic sensor and proportional control  STEP 1: (Calculate the error) Subtract the target distance from the Ultrasonic value.  STEP 2: (Apply the correction) Use the error from the previous step as the steering in a Move Steering block. You may need to multiply the error by a magic number to make your robot smoother  STEP 3: Repeat the above steps in a loop Play the video to see how the robot should move Do you notice any differences from the wall followers in the Intermediate Ultrasonic Wall Follower Lesson? © 2015, EV3Lessons.com, Last edit 11/17/2015

Challenge Solution

Credits  This tutorial was created by Sanjay Seshan and Arvind Seshan from Droids Robotics.  More lessons are available at  Author’s © 2015, EV3Lessons.com, Last edit 11/17/2015 This work is licensed under a Creative Commons Attribution- NonCommercial-ShareAlike 4.0 International License.Creative Commons Attribution- NonCommercial-ShareAlike 4.0 International License