Using Perfboard | Soldering Basics

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Introduction: Using Perfboard | Soldering Basics

About: Creating DIY projects

If you're building a circuit but you don't have a designed circuit board for it, using perfboard is a good option. Perfboards are also called Perforated Circuit Boards, Prototyping Boards, and Dot PCBs. It's basically a bunch of copper pads on circuit board material, usually on one side but the copper pads can be on both sides.

I have a series of Instructables about some Soldering Basics to discuss different aspects of soldering. If you're interested in learning about some other aspects of soldering, you can check out my other Instructables in this series:

I'm open to adding more topics to this series over time so if you have any suggestions, leave a comment and let me know. Also, if you have any tips to share, or if I get some of my info wrong, please let me know. I want to make sure this Instructable is as accurate and helpful as possible.

If you would like to see a video version of this Instructable, you can see that here: https://youtu.be/l9Kbr8cPqOE

Supplies

Step 1: Making the Perfboard Size

In these pictures I have a couple of small perfboards. They are attached, and you can see there is a section that will let you easily break them apart. If you need your perfboard even smaller, you can cut it to the size you need.

Step 2: Placing the Parts

When you add a part to these boards, you can add it to either side, but typically you'll want to add it to the side without the copper pads. After guiding the leads through some holes, bend them to hold the part in place. If you have a part where the leads don't line up with the holes, just bend the leads so that they do.

Step 3: Solder Path: Option 1

When you are ready to solder the parts together, there are a few ways to connect the leads of the different parts together. One way is to bend the leads to follow the path you want them to have. Add a bit of solder to both ends of that lead to hold it in place.

Step 4: Solder Path: Option 2

Another way to make a path is with pieces of wire. It's similar to using the leads of the part. I like adding a bit of solder to the copper pads before adding the wire, just because that makes it a bit easier.

Step 5: Connecting Wires

If you need to connect 2 leads that are crossing like in these pictures, I recommend trimming one down before soldering them together. If you trim it a bit short, that's ok because you can easily add enough solder to join them.

Step 6: Solder Path: Option 3

Here's another way to join the leads. Add solder to the path of pads that you want to connect, then gradually add more until the solder build up lets you connect them together. If you need to make a turn in the path, wait for the fresh solder to cool down before adding the turn.

Step 7: Option 3 Corner Examples

Here I have pictures of a demo that I did where I didn't wait long enough. You can see that the solder in the corner kept building up. It will still work, but it takes up much more space. If you wait for it to cool, you can join the paths with a narrow corner.

Step 8: Jumper Wires

Sometimes you'll need to cross over some of your existing paths, but don't want to connect to them. You'll need to add a jumper wire to do this. You can add the jumper wire to either side of the board. Just make sure that wire is insulated from the others.

Step 9: BONUS: Experiment Intro

While I was making this Instructable, I had a question come to mind. Can you use perfboard with surface mount components? I decided to try it with a few components and find out. The steps for this experiment are not "How To" steps, but the techniques that I did use are all from the previous steps in this Instructable. (These next few steps are mostly about the pictures.)

You can also view a video version of this experiment here: https://youtu.be/Erx4HGnIvS8 (Click Here)

Step 10: Experiment: Surface Mount LED

Luckily, the solder pads on this LED line up perfectly with the solder pads on the perfboard. After it worked to solder one copper pad of the LED, I finish soldering the other 3. It looks like it worked! I can't say for sure that it will work for all surface mounted parts, but at least some.

Step 11: Experiment: Surface Mount Capacitor

So let's try a super small capacitor I have for this LED. It appears to fit within the copper pads, and soldering it to the copper pads seems to have worked. There appears to be potential, so let's take a closer look.

Step 12: Experiment: a Closer Look

They seem successfully attached, so I have an idea...

Step 13: Experiment: Successful SMD LED Circuit

I soldered 4 LEDs to this board, with their 4 capacitors. I made some solder traces on one side, and used some jumper wires on the other side. I've also attached a connector to the board so that I can hook up an LED controller. After plugging it in, they work! It was a lot of extra work to do this and it looks a bit messy, but it was successful.

Step 14: And That's It!

Well, that was interesting to try. I'll have to play around with this a bit more and see if I can clean up the results. If you have any tips or advice that you would like to share for using perfboards, please leave a comment and share your ideas. Thank you for checking out this Instructable!

Here are the other Instructables for my Soldering Basics Series:

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    2 Comments

    0
    tom82655
    tom82655

    Question 7 months ago on Introduction

    I came here with one question but learned a lot more than I had hoped. But I still have two questions:
    1. What is the best way to connect one side of a perf board to the other (assuming the perf board doesn't already make that connection).
    2. What is the best way to connect many components to ground. I've been daisy-chaining components "end-to-end" with the last component connected in the chain connected to ground. I don't see anyone else on-line who does it that way. PPL seem to favor the "bus" approach so I'm assuming it's a faux-pas.

    I'm a software engineer by trade so I'd like to hear what a "real" solderer would do!

    0
    How Do You - DIY
    How Do You - DIY

    Answer 7 months ago

    1. When you're using a 2-sided perfboard, you can put a wire through one of the holes and solder it on both sides. It's also easy to use jumper wires to go from point to point.

    2. If I understand what you're describing, it sounds like you're essentially making a ground bus as you're soldering the ends together.

    I'm not very experienced with circuit design, so I hope these answers are helpful! Maybe other readers can expand on these.