Ettronics Hightech

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Ettronics Hightech Welcome to Ettronics Hightech Limited
A platform dedicated to hands-on training in practical electronics and hardware technology.

Our flagship course "Practical Electronics Circuit Design" is out for enrolment.

20/08/2026

Welcome to Part 5 of the Coding with Arduino for Beginners series!

In this lesson, you'll build an exciting 10-LED Chaser Circuit using the Arduino Uno. Instead of controlling a single LED, you'll learn how to control multiple LEDs to create beautiful lighting effects using Arduino programming.

You'll also discover how a few simple changes to your code can produce completely different LED animations, making this one of the most fun and rewarding beginner Arduino projects.

In this lesson, you'll learn:

✅How to build a 10-LED chaser circuit
✅How to connect multiple LEDs to an Arduino Uno
✅How to wire LEDs using current-limiting resistors
✅How to use Arduino digital pins to control multiple outputs
✅How to create different LED flashing patterns using code
✅How to adjust the speed of LED animations
✅How to identify and fix common coding errors
✅How to use a push button to switch between multiple lighting effects

LED Patterns You'll Build

1. Fill and Empty Pattern
2. Running Light Pattern
3. Odd and Even Flash Pattern
4. Knight Rider (Scanner) Pattern
5. Center Explosion Pattern
6. Inward Chase Pattern
7. Bonus Project: Push Button Pattern Selector

Components Used

✅Arduino Uno R3
✅Breadboard
✅10 LEDs
✅10 × 220Ω Resistors
✅Jumper Wires
✅Push Button Switch
✅USB Type-A to Type-B Cable

What You'll Build

By the end of this lesson, you'll have built a fully programmable LED chaser capable of displaying multiple lighting effects. You'll also understand how changing just a few values in your Arduino code can dramatically change the behavior and speed of your circuit.

Coming Up Next

In Part 6, we'll continue building exciting Arduino projects while learning new programming concepts that will help you create even more interactive electronic circuits.

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💬 Share your favorite LED pattern in the comments.

18/08/2026

Welcome to Part 4 of the Coding with Arduino for Beginners series!

This is where your Arduino programming journey truly begins. In this lesson, you'll write, upload, and run your first Arduino program to make an LED blink automatically.

You'll learn how to install the Arduino IDE, connect your Arduino Uno to your computer, understand the structure of an Arduino program, build a simple LED circuit, and upload your first sketch to the Arduino board.

By the end of this lesson, you'll have successfully combined electronics and programming to control a real electronic component using code.

In this lesson, you'll learn:

✅How to download and install the Arduino IDE
✅What the Arduino IDE is and why it's used
✅How to connect an Arduino Uno to a computer
✅How to select the correct Arduino board and COM port
✅The difference between coding and programming
✅What an Arduino Sketch is
✅How Arduino comments work
✅The purpose of the setup() function
✅The purpose of the loop() function
✅How to use pinMode()
✅How to use digitalWrite()
✅How to use delay()
✅How to upload code to an Arduino board
✅How to build a simple LED circuit using an Arduino Uno
✅How to control an LED using code instead of a mechanical switch
✅How changing the delay value affects the LED's blinking speed

Components Used

✅Arduino Uno R3
✅Computer
✅Arduino IDE
✅USB Type A to Type B Cable
✅Breadboard
✅LED (Light Emitting Diode)
✅220Ω Resistor
✅Male-to-Male Jumper Wires

These are all included in the Ettronics Hightech Arduino kit. To get the kit, you can send us a DM or use the link in the comments.

What You'll Build

In this project, you'll build a simple LED circuit connected to Digital Pin 2 of the Arduino Uno. After uploading your first Arduino sketch, the LED will blink automatically. You'll then modify the program to make the LED blink faster and slower by changing just a few lines of code.

This project introduces one of the most famous beginner programs in electronics and programming—the Blink LED project—which serves as the foundation for countless Arduino projects.

Coming Up Next

In Part 5, we'll continue exploring Arduino programming by introducing new coding concepts and building even more exciting electronic projects using sensors, inputs, and outputs.

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💬 Leave your questions in the comments

09/08/2026

The Ettronics Hightech Arduino Kit. Send us a DM to get yours.

02/08/2026

Welcome to Part 3 of the Coding with Arduino for Beginners series!

In this lesson, you'll build your first real electronic circuit from scratch using a battery, breadboard, LED, resistor, switch, and jumper wires. You'll also learn how to read a simple circuit diagram and convert it into a working physical circuit.

This is an exciting milestone because you'll see your first circuit come to life by turning an LED ON and OFF with a switch—just like professional engineers do when testing new electronic designs.

In this lesson, you'll learn:

✅How to read a simple circuit diagram (schematic)
✅How electronic symbols represent real components
✅How to build your first electronic circuit on a breadboard
✅How to connect a battery, resistor, LED, and switch correctly
✅The difference between an open circuit and a closed circuit
✅Why LED and battery polarity is important
✅How electricity flows through a complete circuit
✅How to test your circuit
✅Basic troubleshooting techniques for circuits that don't work
✅Troubleshooting a faulty circuit

If your LED doesn't light up, you'll learn how to check:

✅Component placement on the breadboard
✅Battery polarity
✅LED polarity
✅Jumper wire connections
✅Faulty jumper wires
✅Faulty LEDs

These troubleshooting skills are essential for every electronics beginner and will help you solve problems confidently as your projects become more advanced.

Components Used

✅Breadboard
✅9V Battery and Battery Clip
✅LED (Light Emitting Diode)
✅Resistor
✅Push Button Switch
✅Male-to-Male Jumper Wires

By the end of this lesson, you'll have successfully built your first working electronic circuit and gained the confidence to start creating even more exciting projects.

Coming Up Next

In Part 4, we'll replace the battery with an Arduino Uno, write our first Arduino program, and make an LED blink using code. This is where electronics meets programming!

If you would like your child to receive personalized tutoriang in STEM, coding, electronics, or Arduino programming, send me a DM.
We have Arduino learning kit used in this course available to students. If you are interested in obtaining a kit or learning more about the program, feel free to send me a message.

02/08/2026

Welcome to Part 2 of the Coding with Arduino for Beginners series!

Before writing our first Arduino program, it's important to understand the basic electronic components that make every circuit work. In this lesson, you'll learn the fundamentals of electricity and become familiar with the components you'll use to build your very first Arduino project.

This beginner-friendly lesson is perfect for students, hobbyists, makers, and anyone starting their journey into Arduino, electronics, and robotics.

In this lesson, you'll learn:

✅What electricity is
✅What an electric circuit is
✅The difference between an open circuit and a closed circuit
✅How a battery powers electronic circuits
✅How a breadboard is arranged and connected
✅How jumper wires connect components
✅The parts and polarity of an LED (Light Emitting Diode)
✅What a resistor does and why it protects electronic components
✅The unit of resistance (Ohms)
✅How a switch turns a circuit ON and OFF

By the end of this lesson, you'll understand the purpose of each component and be ready to build your first electronic circuit in the next video.

What You'll Need

✅Breadboard
✅LEDs
✅Resistors
✅Jumper wires
✅Battery
✅Push button switch

In the next lesson, we'll connect all these components together and build our first working electronic project before we begin programming with Arduino.

If you would like your child to receive personalized tutoriang in STEM, coding, electronics, or Arduino programming, send me a DM.
We have Arduino learning kit used in this course available to students. If you are interested in obtaining a kit or learning more about the program, feel free to send me a message.

26/07/2026

To parents that asked me to create something for their kids, I'm making it already.

This course is designed for children and absolute beginners (ages 8+) who want to learn coding, electronics, and Arduino through simple explanations and hands-on projects.

To make STEM education more accessible, I have made the course completely free. You can access the available units on YouTube using the link the comments.

I upload at least one new lesson every week, so be sure to subscribe and follow along as we explore the exciting world of coding and electronics together.

If you would like your child to receive personalized guidance in STEM, coding, electronics, or Arduino programming, I would be happy to help.

I also make the Arduino learning kit used in this course available to students. If you are interested in obtaining a kit or learning more about the program, feel free to send me a message.










08/05/2026

This Game is a tactile alphabet puzzle game for the blind designed to support accessible learning and early literacy.

This interactive educationaltool features puzzle pieces shaped like the letters of the English alphabet.

When each piece is correctly placed into its
matching slot, the system plays the
corresponding letter sound, helping users learn through touch and audio feedback.

Ideal for visually impaired children and beginners, this accessible alphabet learning game enhances letter recognition, phonics skills, and sensory development in a fun and engaging way.





20/04/2026

Have you ever wondered why a single press of your laptop’s power button is enough to turn it on? Why not a long press?
In this beginner-friendly electronics tutorial, we break down the real reason behind this — and it all comes down to a fundamental concept in digital electronics: pull-up and pull-down resistors.
In this video, you’ll learn:
✅What a floating GPIO pin is and why it causes problems
✅How electrical noise and interference can trigger circuits unexpectedly
✅How a pull-up resistor stabilizes a circuit
✅Why resistors are essential to prevent short circuits
✅The difference between pull-up vs pull-down resistor circuits
✅How this concept applies to real devices like your laptop's power button
✅A practical demonstration using a microcontroller, LED, and oscilloscope

You will also see a real-life experiment where removing the pull-up resistor causes erratic behavior due to environmental electrical noise (including 50Hz AC interference), and how adding it fixes the issue instantly.

By the end of this tutorial, you’ll clearly understand:

✔ Why one click is enough to power on your laptop
✔ How microcontrollers detect button presses
✔ How to design stable, noise-resistant circuits

Want to Learn Practical Electronics from Scratch?
Check the link in the description or comment section to access a full beginner-to-advanced course on electronic circuit design.

12/04/2026

If you’re starting with electronics or Arduino, you’ve probably heard the terms current sourcing and current sinking… and got totally confused.
This quick video makes it super easy to understand:

Sourcing = the device gives current to the load
Sinking = the device takes current from the load

With clear examples so you’ll never mix them up again!

Link to my course: https://ettronics.com/product/practical-electronics-circuit-design/

Address

Suite 110 Bethel Plaza, 117 Shasha Road
Lagos
100272

Opening Hours

Monday 09:00 - 17:00
Tuesday 09:00 - 17:00
Wednesday 09:00 - 17:00
Thursday 09:00 - 21:00
Friday 09:00 - 17:00

Telephone

+2349030295926

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