Build Circuits With Rich – DIY Oscilloscope (O-Scope) Project Part 2

✝️ Foundation

Before we get into the circuits, I want to share something more important than electronics:
1 John 4:7–9 (KJV)
7 Beloved, let us love one another: for love is of God; and every one that loveth is born of God, and knoweth God.
8 He that loveth not knoweth not God; for God is love.
9 In this was manifested the love of God toward us, because that God sent his only begotten Son into the world, that we might live through him.

As we learn, build, and grow, it’s important to remember that knowledge is important, but love matters even more. God showed His love to us through His Son Jesus Christ, and that truth gives meaning far beyond anything we can learn on our own or build with our hands.

Safety Reminder

These circuits use low voltage, but always double-check your wiring before applying power. A small wiring mistake can still cause confusion, incorrect results, or damaged parts.

Also, soldering irons are very hot. 650 to 700 degrees F. So be very careful when using them!

Welcome to Build Circuits With Rich

In this video, we continue building the DSO138 oscilloscope kit and make real progress on the main board. This DIY O-Scope project is a great way for beginners to learn electronics, soldering, and component identification while building a useful piece of test equipment.

An oscilloscope helps you see electrical signals, which makes it one of the most helpful tools in electronics. In this lesson, we begin assembling the board and walk through several practical soldering tips along the way.

Watch the Full Lesson Video:

You can watch more lessons on my YouTube channel:
Build Circuits With Rich
https://www.youtube.com/@BuildCircuitsWithRich

What We Installed in This Build

In this part of the DSO138 O-Scope build, I installed:

  • Resistors
  • Diodes
  • Inductors
  • USB-B connector

These parts help lay the foundation for the rest of the oscilloscope build, and getting them installed correctly is an important step toward bringing the project to life.

Soldering Tips Covered in This Lesson

This video also includes several helpful soldering tips for beginners, including:

  • Keeping the soldering iron tip clean and shiny
  • Using the right soldering temperature
  • Heating the pad and component lead correctly
  • Using flux when needed
  • Watching out for cold solder joints
  • Avoiding solder bridges and stray solder balls
  • Taking your time so you can avoid troubleshooting later

Good soldering habits make a huge difference in how well a circuit works. Also, soldering irons are very hot. 650 to 700 degrees F. So be very careful when using them!

Why Organization Matters

Before starting the build, I organized the kit parts to make the process easier. That included sorting the components, checking values, and identifying parts before soldering them onto the board.

That extra preparation helps reduce mistakes and makes the build go much smoother.

A Few Things I Pointed Out During the Build

As I worked through this part of the oscilloscope kit, I also talked about:

  • Checking resistor values with a meter
  • Matching diode orientation correctly
  • Recognizing component symbols on the board
  • Working carefully with through-hole parts
  • Taking breaks when needed instead of rushing

This is one of the big benefits of a hands-on electronics project. You are not just assembling a kit — you are learning how to think through the build.

What’s Coming Next

Next week, we’ll continue with the DSO138 oscilloscope build and install more components as we move closer to finishing the board.

Step by step, this DIY O-Scope is coming together.

Why I Make These Lessons

My goal is to make electronics easier to understand for beginners by breaking things down into practical, hands-on lessons.

If you are learning electronics, soldering, circuit building, or component basics, I hope these lessons help you build confidence and enjoy the process.

Closing

Thanks for following along with the build.

Keep building. Keep learning. And as always…

Time to go to the lab.

Want more electronics lessons?

For more beginner-friendly electronics lessons, circuit walkthroughs, and hands-on breadboard builds, visit:

https://buildcircuitswithrich.com

Prefer video?
Watch full lessons on the Build Circuits With Rich YouTube Channel.

Back To: Videos