Build a mini robotBeginnerLesson 2736 min read

Showcase: plan, build and share your robot

Pick a small robot project, plan it with a safety and test plan, build it step by step, and share it so others can learn from it.

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In 60 seconds

Showcase: plan, build and share your robot

Pick a small robot project, plan it with a safety and test plan, build it step by step, and share it so others can learn from it.

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In simple words
Think of a school science fair. The best projects are not always the fanciest. They are the ones where the student can say: "This was my question, this is what I built, this is how I tested it, this is what went wrong, and this is what I learned." Your robot showcase is the same.
You now know how to program a robot in a simulator, wire a real one, steer it smoothly and add a little AI. This lesson helps you turn that into a finished project that you can show at school, in a club, at a maker fair or online.

Pick a project you can finish

Project ideaMain skillsStretch goal
Line follower that runs a full trackIR sensors, PIDTime laps, then improve the time without leaving the line
Room explorer that never crashesUltrasonic sensor, avoidance rulesAdd side sensors or a bump switch
Voice-controlled robotLanguage model, strict parsing, safetySupport two or more Indian languages
Path-reading robot with a cameraTiny vision model, data collectionTest in three different rooms
Classroom helper that carries a small boxMotors, stability, careful testingStop automatically if the box slides
Choose one main goal. A robot that does one thing well is better than one that does five things badly. Add stretch goals only after the main goal works.

Your project plan

  1. 1

    Goal

    One sentence: what the robot does and how you will know it works (a measurable test).
  2. 2

    Parts and power

    Your parts list and power plan from lesson 5.
  3. 3

    Safety plan

    Battery handling, supervision, test area, off switch, what to do if something gets hot.
  4. 4

    Build in stages

    Simulator first, then wheels on a box, then the floor at low speed, then full speed.
  5. 5

    Test plan

    Several runs, several starting points, recorded results, not just one good video.
  6. 6

    Share

    Photos, a short video, your code and what you learned.

Keep a build log

Write a few lines every time you work on the robot: the date, what you changed, what happened, and what you will try next. When something breaks, the log helps you find what changed. It is also the best material for your final presentation.

Showing it well

Weak showcase
  • Only the one run that worked
  • "It uses AI" with no detail
  • No mention of problems
  • Code not shared, or shared with passwords in it
Strong showcase
  • Results from several runs, including failures
  • Clear explanation of each part: sensors, control, model, checks
  • What went wrong and how you fixed it
  • Clean code, with a short README, no secrets

Sharing responsibly

  • Credit others. If you used someone's code, diagram or idea, say so and follow its licence.
  • No secrets. Remove Wi-Fi passwords and API keys from code before you share it.
  • Privacy. Ask before showing other people's faces or voices, and take extra care with children.
  • Honest claims. Say what the robot really does, and in what conditions it was tested.
  • Safety notes. If others might copy your build, include the safety steps: batteries, soldering, supervision.
Real example
Imagine a Class 9 student in a small town in Odisha. She built a line follower from a basic kit and cardboard. At the district science exhibition, her table had the robot, a printed build log with every failed attempt, and a chart of lap times after each PID change. The judges spent the longest time on the build log, because it showed how she thought.
Do this
At a public showcase, run the robot slowly in a fenced or marked area, keep batteries in a safe container when not in use, and stay with your robot. Switch it off when you step away.
Try this. Write your goal sentence now, with a number in it. For example: "My robot will follow the classroom track for 3 laps in a row without leaving the line, at least 4 times out of 5 tries."

Watch and read more

Lab

A one-page project plan with a measurable goal, a safety plan, a test plan and a sharing plan, ready to build.

~60 min

The problem

Write a one-page plan for your own robot project (virtual or real).

  1. Goal: one sentence with a number you can measure.
  2. Parts and power: your list, or "simulator only".
  3. Safety plan: at least four rules: batteries, supervision, test area, off switch. If you solder or use lithium cells, include those.
  4. Build stages: at least four stages from simulator to final test.
  5. Test plan: how many runs, from which starts, what you record, and what counts as a pass.
  6. Sharing plan: what you will show, what you will remove (secrets, faces without permission), and who you will credit.
  7. Ask a friend or teacher to read it and write down one question they had.
Starter codetext
PROJECT PLAN
Goal (with a number):
Parts and power:
Safety plan:
  1.
  2.
  3.
  4.
Build stages:
  1. Simulator:
  2. Wheels on a box:
  3. Floor, low speed:
  4. Final test:
Test plan (runs, starts, what I record, pass rule):
Sharing plan (what I show, what I remove, who I credit):
Reviewer's question:

You are done when

Hard questions

Try to answer before you reveal. If you can answer these, you understood the lesson.

Q1Your robot passes your test 5 times out of 5 at home. Is it ready for a public showcase? What else would you test?Reveal

Not yet. Test in conditions like the showcase: a different floor, different light, noise (for voice control), people moving nearby, and a battery that is not freshly charged. Test the stop and the off switch too. Five good runs at home only show it works at home.

Q2A visitor asks, "Is your robot intelligent?" How would you answer honestly?Reveal

Explain what it really does: for example, "It follows the line using two light sensors and a PID controller. It does not understand anything; it reacts to sensor readings with rules I wrote and tuned." If it uses a model, say what the model does, how accurate it was in your tests, and what safety checks sit around it. Honest, specific answers are more impressive than big claims.

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Questions people ask

I do not have money for parts. Can I still do a showcase?

Yes. A simulator project is a real project. You can build a harder track in the simulator, compare controllers with numbers, or build the voice command checker. Many schools, libraries and maker clubs also share parts and tools; ask your teacher.

How long should my project take?

Plan a few weeks for a first robot, with small sessions. Things take longer than expected, especially wiring and debugging. That is normal. Plan the main goal to be finished well before the showcase day.

Where can I share my code?

Public code-sharing sites are common for this. Add a short README: what the robot does, the parts, how to wire it, how to run the code and the safety steps. If you are under the age a site requires, ask a teacher or parent to help, and follow the site's rules.

What if my robot fails on showcase day?

It happens to everyone, including professional teams. Have a video of good runs as backup, and explain calmly what you think went wrong. Explaining a failure well shows real understanding.

Lesson test

5 questions. Get 3 right (60%) to pass and complete this lesson.

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