IOT102 · Electronics Basics for IoT

Categories: Emerging Technology
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About Course

The electronics you need to build IoT prototypes safely: voltage, current, resistance, Ohm's law, breadboards, common components and how to measure circuits, all practiced in a free browser simulator.

Explore · 4 hours · 4 lessons, a lab, an assessed assignment and a portfolio piece

Who it is for

Beginners who have never wired a circuit and want enough electronics to work confidently with microcontrollers.

Prerequisites

IOT101 is recommended; no prior electronics knowledge is required.

What you will be able to do

  • Calculate voltage, current or resistance in a simple circuit using Ohm's law.
  • Select a correct current-limiting resistor for an LED powered from 3.3 V or 5 V.
  • Build and measure a series circuit and a voltage divider in Tinkercad Circuits.
  • Explain the difference between digital and analog signals and how a microcontroller reads each.

Lessons

  • Lesson 1 · Voltage, current, resistance and Ohm's law
  • Lesson 2 · Components and the breadboard
  • Lesson 3 · Signals, measurement and safe practice
  • Lesson 4 · Lab and assignment

Lab: Build and measure circuits on a virtual breadboard

You build an LED circuit with a calculated resistor, measure voltage and current with the virtual multimeter, and then build a light-sensing voltage divider with a photoresistor. You compare your calculations with the simulated measurements.

Free tools: Tinkercad Circuits (free, in the browser)

Assessed assignment

Submit your Tinkercad design link or screenshots of both circuits and a measurement table with calculated versus simulated values. Explain in your own words why the LED needs a resistor and what would happen without one. Describe how the voltage divider output would be read by a microcontroller's analog input. Finish with a short safety checklist for working with real low-voltage circuits.

Criterion Weight What excellent work looks like
Correct calculations 30% Ohm's law is applied correctly, units are shown and standard resistor values are chosen sensibly.
Working circuits 30% Both circuits are wired correctly in the simulator and behave as expected.
Measurement and comparison 25% Voltage and current are measured at the right points and differences from calculations are explained.
Safety and clarity 15% The safety checklist is practical and the explanation is clear enough for a beginner.

Portfolio piece

A documented Tinkercad circuit pair (LED and light sensor) with a measurement table you can reuse as a reference sheet.

Self-paced, 12-month access. Questions are answered in writing through the student panel. A completion record is issued when you finish the course.

Next step

Continue with IOT103 · Microcontrollers: Arduino and ESP32 · 6 hours · $42.00

Continue to the next course

Prefer the whole program? Program in IoT & Smart Systems · $378.00 (10% less than buying the courses separately)

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What Will You Learn?

  • Calculate voltage, current or resistance in a simple circuit using Ohm's law.
  • Select a correct current-limiting resistor for an LED powered from 3.3 V or 5 V.
  • Build and measure a series circuit and a voltage divider in Tinkercad Circuits.
  • Explain the difference between digital and analog signals and how a microcontroller reads each.

Course Content

IOT102 · Electronics Basics for IoT (4 h)
The electronics you need to build IoT prototypes safely: voltage, current, resistance, Ohm's law, breadboards, common components and how to measure circuits, all practiced in a free browser simulator.

  • Lesson 1 · Voltage, current, resistance and Ohm’s law
  • Lesson 2 · Components and the breadboard
  • Lesson 3 · Signals, measurement and safe practice
  • Lesson 4 · Lab and assignment
  • IOT102 Assessment · Electronics Basics for IoT
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