Digital and Analogue System Design · SHS2 Robotics

Lesson notes

Learning Objectives

Indicator: 2.2.1.LI.1 - Solder and test electronic circuits on a Printed Circuit Board (PCB) using pre-designed schematic diagrams.

By the end of the lesson, learners can:

Identify at least six electronic components (resistors, capacitors, LEDs, diodes, transistors, inductors, relays) on a PCB and state their purpose in a circuit.
Use a multimeter to measure resistance, capacitance, and diode forward voltage, and deduce component ratings from the measured values.
Translate a pre-designed schematic diagram into the correct placement of components on a PCB, respecting polarity and orientation markings.
Solder components onto a PCB using correct soldering technique, including proper tinning, heating, and joint inspection.
Test a soldered circuit with a power source and measuring instruments, and diagnose any faults by comparing expected readings with actual readings.

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Curriculum details

Strand: Robot Design Methodologies (Strand 2)
Sub-strand: Digital and Analogue System Design (2.1)
Content standard: 2.2.1.CS.2 - 2.2.1.CS.2 Demonstrate knowledge of practical skills in the design and building of electronic circuits. 2.2.1.LO.2 Build and test basic combinational circuits on printed circuit boards.
Indicator: 2.2.1.LI.1 - Solder and test electronic circuits on a Printed Circuit Board (PCB) using pre-designed schematic diagrams.
Suggested placement: Semester 2, Week 4 (Week 24 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 105

Exemplars (from the NaCCA curriculum)

Talk for Learning: In pairs, learners watch a video or do a search on electronic circuits. Identify components such as resistors, capacitors, LEDs, inductors, circuit breakers, relays, diodes, and transistors, as well as their ratings, and explain their purposes in electronic circuits.

Experiential Learning: In pairs, learners use appropriate measuring instruments to take relevant readings, deduce component ratings from measured values, and share them with the class.

Project-Based Learning: Learners work in pairs to convert schematic diagrams into soldered circuits on Printed Circuit Boards (PCBs) and share work with the class for comments and feedback.

Assessment (2.2.1.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding; Level 3 Strategic reasoning.

Teaching and Learning Resources:
- LEDs
- Capacitors
- Inductor
- Circuit breakers and transistors
- Diodes