This $50 soldering iron saved more of my old gear than I expected


I’m lucky enough to have a handful of hobbies that all seem to leave broken gear in their wake. I’m a musician, a video gamer, a pinball enthusiast, and a homeowner. I deal with bad cables, loose wires, scratchy jacks, questionable connections, old electronics, and gear that looks dead long before it really is.

Somewhere along the way, my soldering iron became one of those essential tools I reach for all the time, right up there with my multimeter.

A lot of “dead” gear only has one bad connection

A decent soldering iron makes those fixes possible

Soldering iron, notebook with 3D printing materials. Credit: Hannah Stryker / How-To Geek

You don’t have to be an expert in circuit boards to get real use out of a soldering iron. I’m not talking about diagnosing tiny surface-mounted components or rebuilding complicated electronics from scratch. A lot of the most useful repairs are much simpler than that: a wire that came loose, a cable that needs a new end, a guitar jack that cuts in and out, or a connection that just needs to be cleaned up and reflowed.

You also don’t need an expensive soldering station to get started. A decent, affordable soldering iron can be enough to turn small failures into things you can actually fix instead of throwing away.

One of the first things you learn after fixing a few small electronics problems is that a lot of “dead” gear isn’t really dead. Sometimes it’s just one loose wire, one cracked solder joint, one worn-out jack, or one cable end that finally gave up after years of being bent, pulled, and tossed into bags. That doesn’t mean everything is worth opening up or that every repair is simple, but it does mean a surprising number of failures are more basic than they look.

That’s where a decent soldering iron changes things. It turns those obvious failures from “I guess this is trash now” into “I can probably fix that.” You don’t need a professional repair bench or years of electronics experience for the simple stuff. If you can spot the bad connection, heat the joint properly, and make a clean repair, you can bring a lot of gear back to life with a tool that costs less than replacing some of the things it fixes.

My first soldering iron was a gift from a friend years ago. It was cheap, but it got the job done. The next one I bought was definitely better, but it wasn’t very expensive. It was about $45, and with a few other accessories like a tip cleaner, solder, and heat shrink, I spent around $55. The repairs I’ve made with it have paid back that initial investment many times over.

I’ve used mine on guitars, pedals, cables, amps, and old electronics

The best repairs are the ones sitting right in front of you

This is where a soldering iron stops being a “someday I might need this” tool and starts earning its spot on the bench. I’ve used mine on guitar cables, amps, handheld video games, old electronics, and plenty of other small repairs where one bad connection was enough to make something seem useless. Sometimes the fix is as simple as reattaching a loose wire or cleaning up a connection that has cracked or weakened over time. Other times, it’s replacing the part that failed and making the new connection solid enough to last.

I actually have a guitar pedal on my workbench right now with a broken 9V battery connector. The pedal itself isn’t dead, but that one bad connection means it can’t get power the way it should. Instead of tossing it or letting it sit in a drawer forever, I’m going to solder in a new 9V connector and bring it back to life. I also have a guitar with a faulty input jack that I’m going to open up, check the connections, and reflow the solder points if needed. Those are exactly the kinds of repairs that make a basic soldering iron so useful.

A few safety rules you should follow

The easy repairs still deserve a little respect

Soldering is approachable, but it’s still not something you want to treat casually. The tip gets hot enough to burn you instantly, and some electronics, especially power supplies, amplifiers, and old TVs, can have parts inside that hold a charge even after they’re unplugged. That doesn’t mean you should be afraid of it. It just means you need to slow down, work in a clear space, and know when a repair is outside your comfort zone.

For basic jobs, I try to keep the rules simple. Use a stand so the hot iron isn’t rolling around the bench, keep the area ventilated, and unplug anything before opening it up. I’m also careful about what I choose to work on. A loose guitar jack, a broken cable, or a 9V battery connector is one thing. Power supplies, lithium batteries, and anything tied directly into wall voltage are another. A soldering iron can save a lot of old gear, but knowing what not to touch is part of what makes it useful instead of dangerous.


A soldering iron makes broken gear feel fixable again

I don’t look at broken gear the same way anymore. Not everything is worth saving, and I’m not opening up anything I don’t understand. But if the problem is obvious, like a loose wire, bad jack, broken connector, or cracked solder joint, a basic soldering iron gives me a reason to try before I toss it. For about $45 (now it’s $53), that’s an easy tool to justify.



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Robot mowers on a yard

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The perfect robot mower for you is not nearly as fancy and feature-heavy as you may think. I’ve said it before, and I’ll say it again: it’s not the lawn mower, it’s all about the yard. A robot mower may be a market leader with top-of-the-line specs and still not be a good fit for your yard.

Here’s the great news: There’s a perfect robot mower for almost any yard. As someone who’s tested numerous types of robot lawn mowers, I’ve learned that many of the specs that brands market as groundbreaking are simply not vital for most shoppers. A mostly flat, fenced-in 0.10-acre yard doesn’t need the power that a hilly, sectioned, unfenced one-acre yard does.

Also: I tested the Ferrari of robot mowers for a month – here’s my verdict

If you’re looking to choose the best mower for your home, be sure to check out ZDNET’s robot mower buying guide

Here’s what you don’t need to stress over when buying a robot mower

Eufy E15 Robot Mower

Maria Diaz/ZDNET
For yards with… Best robot mower type Examples
No fences A wired boundary is best, but a great GPS/RTK robot mower can stick to the map you make with it. Yardcare E400, Mammotion Luba 3
Fences A LiDAR robot mower that can be dropped to mow with little setup and learn its map as it navigates. Eufy E15, Ecovacs Goat A3000
A lot of trees A LiDAR or wired boundary mower, since trees can interfere with satellite signals. Husqvarna iQ series (optional wire, EPOS)
Unbordered garden beds A GPS/RTK robot mower that you can set up to avoid flower beds when mapping. Mammotion Luba 3, Husqvarna iQ Series
Bordered garden beds A LiDAR, GPS, or wired boundary robot mower works for these yards. If you choose a wired boundary, you may have to bury wire around the flower beds, unless the borders are tall enough for the mower to avoid. Mammotion Yuka, Navimow Series H
pets A LiDAR robot mower that can adjust its navigation in real-time in reaction to its surroundings. Mova LiDAX Ultra 2000, Segway Navimow i2
Hills and uneven terrain An AWD robot mower capable of handling steep slopes, regardless of the navigation type. Mammotion Luba 3, , Husqvarna iQ

1. Don’t focus on: ‘AI-powered’ or other marketing buzzwords

Segway Navimow X3 Series robot mower

Maria Diaz/ZDNET

Artificial intelligence (AI) has surpassed the popularity of acid-wash jeans in the 80s and Baby G watches in the early 2000s. And tech companies — including robot lawn mower manufacturers — are capitalizing on its appeal.

Most of these “AI-powered” or “intelligent mowing” terms are vague, geared to grab shoppers’ attention with buzzwords. That doesn’t mean that the robots don’t use AI to navigate, however. 

The key is to find out how the robot uses AI to its benefit, and whether that will meet your AI expectations. 

Also: This robot mower took care of my lawn for months – and it’s currently $300 off

AI algorithms typically process data captured by the robot’s hardware to help it make quick decisions and adjustments. For example, a robot lawn mower may have a set of sensors and cameras to capture its surroundings. The robot’s processor then uses AI to convert that information into actionable data, so it knows whether to swerve to avoid an obstacle or slow down around a retaining wall.

Instead, look for: The navigation tech under (and on) the hood

Instead of AI and other buzzwords, you should focus on matching the robot lawn mower’s hardware and navigation system to your yard. This includes whether the robot uses RTK (Real-Time Kinematic) for positioning, and whether it features LiDAR, cameras, and sensors. 

Then look at real user reviews to assess how accurately the robot mower maps and how well it performs around various types of obstacles.

There’s no blanket rule for robot mowers, but most do well with the following guidelines.

2. Don’t focus on: Premium extras

Yardcare E400 robot lawn mower

Maria Diaz/ZDNET

Skip the premium extras that don’t match your yard. You really don’t need the most advanced robot mower; you need the one that will best handle your lawn. 

Most US homeowners have mostly flat lawns, simple rectangular layouts, minimal obstacles, and small yards. Yet some of the most popular mowers advertise features that don’t match this, and you don’t want to spend an extra few hundred dollars on advanced features that won’t deliver a noticeable difference in your yard.

Instead, look for: Only as much as you need

Do you have a mostly flat lawn with no fences and need a robot that can navigate to several sections separated by paths? Then you can skip AWD models and commit to superior mapping and navigation features, like multi-zone intelligence.

Also: I let a modular yard care robot mow my lawn – here’s my verdict after a month

Similarly, if you have a yard with dense trees covering most of it, it’s safe to skip the RTK models and go for LiDAR or boundary wire options instead. 

3. Don’t focus on: Flashy app features

Mammotion Luba 2 robot mower path

The path lines created by the Mammotion Luba 2, as captured by our Bink Outdoor camera, is one flashy app feature I can’t quit.

Maria Diaz/ZDNET

Any dependable robot lawn mower requires an equally reliable mobile app to let you use it effectively. However, manufacturers market many flashy app features that end up being unnecessary for many users. 

Don’t make app features the deciding factor unless it’s something you genuinely care about. Many users don’t rely on voice control to run their mowers and don’t mind using a separate app for their robot rather than integrating it into an existing home automation system.

Also: I let a smart planter maintain itself for 2 months – here’s the result

A robot lawn mower with mediocre navigation and cutting performance can still have a flashy app — all while leaving behind missed patches or taking longer to finish mowing.

Instead, look for: The features you’ll actually use

Most robot mower users keep them running on a schedule to get the lawn-cutting chore off their minds. The majority of the most popular models offer basic features beyond scheduling, such as remote start and stop, basic mapping, automatic rain delay, and theft protection. 

It’s easy to find robot lawn mowers with these features, but if you’re looking for anything beyond that, just be sure that the feature is worth it, especially if you’re paying extra for that model.

Also: I’ve tested robot mowers for years – here’s my expert advice for every yard type

An example of a flashy app feature that is completely unnecessary, but I love having? The Mammotion’s pattern cutting. I can select the cutting pattern I want on the Mammotion app, whether I want lines or checkered, but I can also have the robot cut in custom patterns, like letters and numbers. I don’t care for mowed letters in my yard, but I like that it always has that freshly mowed checkered patterned with no effort from me. 

4. Don’t focus on: Cutting system extras

Segway Navimow X3 Series robot mower

Maria Diaz/ZDNET

The cutting width and system specs are important, as they can determine whether a robot can cover a given area in a day. However, most robot mowers use similar multiple-blade mulching systems. 

Unlike traditional lawn mowers with large blades for aggressive cutting in a single pass, robot mowers typically feature a set of small blades that constantly spin. Because of this, robot mowers trim smaller amounts of grass with each pass than a traditional mower, but they also cut more frequently and leave behind smaller grass clippings that decompose naturally.

Also: I powered my 3,000-sq-ft home with an EcoFlow battery in a blackout – here’s how it kept my AC on

Because the robot mowers have a smaller, compounding cutting system, the real-world differences between the cutting systems from one brand to another are often smaller than you’d expect. Other issues, like poor navigation, will be glaringly obvious before small differences in blade design.

Instead, look for: Cutting width and yard size

The average US yard would benefit more from navigation quality, consistency, and connectivity than blade design. Instead, you should focus on matching the mower to your yard size.

The robot’s capacity is measured in how many acres it can cover in a day. Among other features, this is calculated based on your robot’s battery size and cutting width. Essentially, most users want a robot that can mow an entire yard in a day, so you can set it and forget it and always come home to a mowed yard. You get this by getting the appropriate robot for your yard size.





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