Lesson Notes By Weeks and Term v4 - SHS 1

Lesson Video

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Performance objectives

• Explain controlled feedback loops
• Create a program from a flowchart
• Use loop interruptions to control a robot
• Collaborate to develop flow control programs

Lesson summary

Welcome, future engineers and innovators! Today, we are moving from building robots to giving them a "brain." A robot without a program is just a collection of metal and wires. The program is the set of instructions that tells it what to do, how to react, and when to stop. In Ghana, we see processes that repeat every day. Think of a traffic light system at the Tetteh Quarshie Interchange; it cycles through red, yellow, and green in a loop. Or an automated irrigation system on a farm near Akosombo, which checks the soil moisture and waters the plants repeatedly. We are going to learn how to write programs for robots that can perform such repetitive tasks.

Lesson notes

This lesson builds on our basic knowledge of programming. Let's dive into the key ideas needed to make our robots perform complex, repetitive tasks. A. Quick Recap: Flowcharts & Basic Arduino Structure Flowchart: A diagram that represents the step-by-step logic of a program. Key symbols we will use are: Oval (Terminator): Start/End Rectangle (Process): An action, e.g., "Move Forward" Diamond (Decision): A question with a Yes/No answer, e.g., "Is distance Sense -> Decide" cycle is a feedback loop.

In programming, the most common way to create this is with a `while` loop.

Syntax of a `while` loop:

```cpp while (condition_is_true) { // Keep doing this code... // ...and this... // ...as long as the condition remains true. } // When the condition becomes false, the program continues from here. ```

Evaluation guide

• Create computer programs from pre-designed flowcharts that have a controlled feedback loop with loop interrupts.
• Talk for Learning: Through discussions, conduct a revision of learners' knowledge in
• programming relating to the flow of control and create programs that implement controlled feedback loops with loop interruptions to control a built robot in a familiar programming
• language or environment.Project-Based Learning: Work in groups to develop the flow of control programs that