Week 5 · Analogue, PWM & Task A

Session 24: Task A: brief and planning

Assessment120 minNo new lesson

Learning outcomes

  • Fill in the Task A plan sheet: pin table and speed table
  • Prove each button and output with a short test sketch

Kit and components

  • Uno, breadboard, 1 push button, 2 LEDs, 2 × 330 Ω resistors, jumpers
  • Multimeter and oscilloscope
  • Printed Task A brief and criteria grid

Pre-reading about 25 min

Students read these on their phones before class. They are listed on the student Before class page.

  1. Practical Task A: Extractor Fan Speed Selector
  2. Lesson 12: Truth tables for state logic
  3. Lesson 12: Pin, power and conflict plan

Session plan

  1. 0:0015 min
    Discuss

    Briefing

    Walk through the brief, the criteria and the evidence list. Answer questions about the requirements, not about solutions.

  2. 0:1545 min
    Plan

    Planning evidence

    Learners fill in the plan sheet on the brief: pin table and speed table. Check and initial each plan sheet before the learner wires anything.

  3. 1:0045 min
    Build

    Build and prove subsystems

    Learners wire the circuit and prove each button and LED with a test sketch, recording the results. Start the main sketch if time allows.

  4. 1:4515 min
    Wrap-up

    Plan check

    Confirm every plan is initialled. Learners without an approved plan finish it as homework.

Checkpoint: ready to move on?

Every learner has an initialled plan and a wired circuit with the button and both LEDs proven.

Extension for fast finishers

Start the main sketch: the state variable and debounced inputs.

Catch-up path

Learners without an approved plan complete it at home from the planning lesson and bring it to S25 for approval before building.

Homework and practice

Complete the plan and start the sketch.

Facilitator notes

  • Initial and time each plan: criterion 1 requires planning produced before wiring.
  • Answer 'how do I...' questions by pointing to a lesson section or Code Along exercise, not with code.