Course Content
Lesson 1: What is a Blinker Circuit?
To help students understand how a basic electronic circuit can make an LED blink automatically using a capacitor, and recognize how such circuits are used in real life.
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Introduction:
What You Will Learn?
Activity: Make a Blinking LED Circuit
Conclusion:
Quiz:
Lesson 2: Schematic to Reality
To help students understand how electronic diagrams (schematics) are turned into real working circuits using actual components on a breadboard.
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Introduction:
What You Will Learn?
Activity: Build a Blinker Circuit from a Schematic
Conclusion:
Quiz:
Lesson 3: Solder Like a Pro!
To introduce the essential skill of soldering, which connects electronic components permanently on a circuit board.
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Introduction:
What You Will Learn?
Activity: Practice Soldering
Conclusion:
Quiz:
Lesson 4: Making a Blinker PCB
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Introduction:
What You Will Learn?
Activity: Build a Blinker on a PCB
Conclusion:
Quiz:
Lesson 5: Troubleshoot Like a Detective
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Introduction:
What You Will Learn?
Activity: Fix a Non-working Blinker PCB
Conclusion:
Quiz:
Lesson 6: What Can I Blink?
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Introduction:
What You Will Learn?
Activity: Invent Your Own Blinker Circuit Idea
Conclusion:
Quiz:
C8: Blinker Circuit + PCB Soldering

Aim:
 To build a basic LED blinker using a capacitor on a breadboard.

Requirements:

  • Breadboard

  • LED

  • Resistor (470Ω)

  • Capacitor (100µF)

  • 9V battery

  • Jumper wires

Steps:

  1. Place the LED on the breadboard (note polarity: long leg = +ve).

  2. Connect the 470Ω resistor to the anode (long leg) of the LED.

  3. Place the capacitor across the circuit (note polarity: longer leg is positive).

  4. Connect jumper wires and the 9V battery carefully.

Observe: The LED should blink repeatedly as the capacitor charges and discharges.

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