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Robotics and electronics13 books

Build an Obstacle-Avoiding Robot

An ultrasonic sensor robot that finds its own way, step by step

  • Free ebook
  • Intermediate
  • 28 pages
  • 121 KB
  • PDF, English
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Free to download, read, print and share. Not for sale.

About this ebook

What you will learn

Build a robot that drives on its own, spots walls and furniture with an ultrasonic sensor, looks left and right on a servo, and turns towards the clearer path. You will learn the speed-of-sound maths, wire and code the whole robot, tune it, add lights, a buzzer and Bluetooth control, and present it with confidence.

Who it is for

Students of class 7 to 12 and robotics clubs.

Contents

  1. How an obstacle-avoiding robot works
  2. Parts, tools and safety
  3. Building the chassis and the sensor mount
  4. Measuring distance with sound
  5. Wiring the robot
  6. Testing each part on its own
  7. The complete Arduino code
  8. Testing and tuning thresholds
  9. Power supply and troubleshooting
  10. Extensions: buzzer, LEDs and Bluetooth override
  11. Presenting at an exhibition

At the end of the book

  • Practice questionsTo check what you have learnt, with the answers after them.
  • GlossaryThe key words of the book, each explained in one sentence.
  • Easy EnglishShort sentences and everyday words, with each new word explained the first time.

Reading, printing and sharing

  1. On a phone or computerTap Read online to open the book in your browser, or Download to keep it and read it without the internet.
  2. To printThe pages are A5, half the size of A4. Choose two pages per sheet in the print settings to fit two pages on each A4 sheet.
  3. To shareSend the link to this page, or the PDF itself, to friends, classmates or students. The book is free for everyone.

Safety first. Electronics in these books runs on cells and batteries of up to 12 V, never on mains electricity. Soldering, hot glue, cutters and chemicals need an adult nearby for younger students.

Courses

Courses this book supports

Students of these courses also find the book in the student portal, with the other ebooks for their course.

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