Electronic Calculator DIY
Electronic Calculator DIY
👨👦 Time spent together
🛠️ Hours without a phone
🎁 The perfect gift
📖 Instructions included
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Electronic Calculator DIY
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The kit was supposed to get my son off his phone, and it worked! It comes with clear instructions. I can recommend it.
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I bought it as a gift for my 10-year-old godson. He built the kit on his own and keeps bragging that he learned to solder. Recommended!
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I've bought several kits here already, and my son and I build them together. Each one is better than the last.
Our Guarantee
Our Guarantee
Our Satisfaction Guarantee
You have 30 days to return it, no questions asked. And if the calculator doesn't work after being built correctly — we'll send you a new one or refund your money.
If you get stuck during assembly, email us at [ADD SUPPORT EMAIL] — we'll help you step by step.
Your satisfaction is our priority
Shipping & Delivery
Shipping & Delivery
Delivery time is 1–3 business days.
Update: due to a high volume of orders, delivery may take up to 9 business days.
All products are delivered with a tracking number, insurance and loss protection.
From screen time to a project they built themselves
Kids today spend hours in front of screens... it's time to give them something to build with their own hands.
Lutovo brings them into the world of real hands-on making — your kid solders, assembles and powers up a working gadget themselves, instead of spending another hour on the phone.
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What happens when a kid starts soldering?
Within just a few days, parents see the difference. Kids spend less time in front of screens, solder and build on their own, and learn how electronics really work. No shortcuts. Just real learning, focus and pride in a device they built themselves.
Why Parents Choose Lutovo
This is where learning becomes tangible
Every kid wants to know how the things around them work — they just need a chance to find out. Lutovo turns play into learning: your kid solders, puts the circuit together and watches the model they built with their own hands actually come to life.
More skills with every kit
Lutovo kits grow with your kid — from the first simple solder joint to more and more advanced projects. Every new kit means a new skill and more confidence with a soldering iron. Because real learning can't be bought ready-made — you have to build it yourself.
It's not about the calculator. It's about the first time.
Yes, there's already a calculator on your phone. But it's not something you soldered yourself and brought to life with your own hands.
It's a simple start before you move on to something bigger.
2,000+ happy customers
What's in the kit?
A PCB, an LED display, buttons and all the electronic components you'll put together into a working calculator. The instructions guide you step by step, so even if it's your first time — you and your kid will manage it together.
Why does it work?
An evening spent on one project, not on two separate screens.
Sparks Creativity
Kids don't just tap for an instant result — they decide for themselves how something should look and work.
Quality Time Together
A project that brings parent and child closer — instead of two separate screens in the same room.
Teaches Focus and Patience
Step-by-step assembly teaches kids to finish what they start — without closing one app and opening the next.
What Our Customers Say
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I bought it for my son to learn soldering — the calculator looks great in its transparent case. Excellent, I recommend it!
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We built it together over the weekend. A really nice activity that teaches patience and the basics of electronics. My daughter is proud she soldered it herself.
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A great gift idea for a teenager who likes tinkering. Clear instructions — I can recommend it.
See how easy the kit is to build
Your kid doesn't need to know electronics or have any experience.
The parts are labeled and the instructions guide you step by step — most families finish the build in 2 hours.
Safe when you're right there
6+ with an adult's help, 11+ on their own.
The soldering iron gets very hot, so an adult leads the assembly — wearing safety glasses, on a mat, with the window open. The solder in the kit is lead-free, with a minimal amount of flux.
30 Days to Return — No Questions Asked
If the product doesn't meet your expectations, you have 30 days to return it. And if the calculator doesn't work after it's built — we'll send you a new one or refund your money. Having trouble during assembly? Write to us and we'll help you by email.
Frequently Asked Questions
What's included in the kit?
What's included in the kit?
In the box you'll find a PCB, an LED display, buttons, all the necessary electronic components and detailed step-by-step assembly instructions.
What else do I need to build the Calculator?
What else do I need to build the Calculator?
A soldering iron and solder — we deliberately leave them out rather than include poor-quality tools that would spoil the first impression. We recommend picking a decent soldering iron separately.
Is it hard to build?
Is it hard to build?
No! The instructions take you through every stage of the assembly step by step, with detailed illustrations. Anyone can do it — even someone who has never held a soldering iron before.
How long does it take to build?
How long does it take to build?
About an hour on average. A perfect evening with your kid or a relaxing weekend activity!
What age is this kit for?
What age is this kit for?
6+ with an adult's help, 11+ on their own. How hard it is depends mainly on whether your kid has an adult's support during their first build — not just on age.
What batteries does it need?
What batteries does it need?
The calculator runs on two AA batteries. They're easy to find in any store.
Is the assembly safe for kids?
Is the assembly safe for kids?
Soldering means working with a hot tool, so we recommend parental supervision for younger kids. The process itself is simple and safe when you follow a few basic rules — you'll find tips on them in the instructions.
Does the calculator work once it's built?
Does the calculator work once it's built?
Yes! Once all the parts are assembled correctly, the calculator is fully functional and ready to use. It works just like any traditional calculator.
Are instructions included?
Are instructions included?
Yes, detailed assembly instructions are included with every order. They include illustrations and descriptions of every step, which makes the build intuitive and enjoyable.
How long does shipping take?
How long does shipping take?
Standard delivery is approx. 3 business days. During busy periods, or when the package ships directly from China, it may take up to 9 business days.
What if I don't like the product or there's a problem?
What if I don't like the product or there's a problem?
You have 30 days to return it, no questions asked. If a problem comes up, email us — we'll reply and help you solve it.
Do you need soldering experience?
Do you need soldering experience?
No. The kit is designed for beginners — the instructions walk you through every step, so it can be your kid's (and your own) very first time soldering.
Are batteries included?
Are batteries included?
No — AA batteries aren't included, but they're easy to find in any store.
Is it a good gift idea?
Is it a good gift idea?
Yes — it's the simplest and most affordable way to find out whether soldering is for your kid, which is why it's often bought as a first gift in this category.
What can the calculator do?
What can the calculator do?
Basic math operations — addition, subtraction, multiplication and division — just like any classic calculator.
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