Our Promise to You

We started Tinkolo because we believe every kid deserves the chance to build something real — not just follow a screen, but wire a circuit, write a line of code, and watch something they made with their own hands come to life. That mission shapes every decision we make, from the kits we choose to sell to the way we handle a missing screw. Here's what you can count on when you shop with us.

Quality You Can Trust

We can tell you exactly why each of these five kits is on the shelf: the controller is a genuine ESP32 or Arduino-compatible board rather than a locked-down toy chip, the instruction booklet is complete, and the build ends in something that actually works. We read the specification, the component list and the instruction booklet before a kit goes on the shelf, and we check that what the maker publishes matches what we would be selling you. Five kits rather than fifty is the point: a short shelf is one we can describe accurately.

Safety First, Always

Here is what is true of these kits, taken from the manufacturer’s specifications and the contents of the box:

• No soldering required — All connections use breadboards, jumper wires, or plug-in connectors. No hot tools needed.
• Small parts — These kits contain small parts. They are not suitable for children under 8, and they should be kept away from younger brothers and sisters during a build.
• Age-appropriate design — Each kit is rated for a specific age range based on the complexity of assembly and the size of components. We follow these ratings carefully and publish them clearly on every product page.
• Low-voltage electronics — All kits operate on USB power or small batteries. There is no exposure to household electrical current at any point.

Real Education, Not Just Play

There's nothing wrong with toys — but our kits are more than that. When your child builds a Smart Farm IoT Kit, they're learning the same sensor technology used in commercial agriculture. When they program a Biped Coding Robot, they're writing real Arduino code — the same language used by engineers and hobbyists worldwide. We chose Arduino and ESP32 platforms deliberately because they're industry-standard tools, not proprietary toy systems that dead-end after a few projects. The skills your child develops with our kits translate directly to school science projects, robotics clubs, and eventually college engineering courses and careers.

Support That Actually Helps

We know that building electronics can be intimidating, especially for first-timers. That's why we're here for you at every step:

• Step-by-step tutorials — Every kit comes with the manufacturer’s illustrated booklet, with numbered steps and wiring diagrams.
• Missing parts replacement — If a part is missing from the box or arrives broken, tell us within 7 days and we will send a replacement at no charge. It happens, and it should not stop a project in its tracks.
• Email support — Reach us at trinkolostore@gmail.com or call (512) 617-2952. We answer every message within one business day. We'll troubleshoot wiring issues, help debug code, or just point you in the right direction.

Your Satisfaction, Guaranteed

We want you to be completely happy with your purchase. If something isn't right, here's how we make it right:

• 30-day returns — An unopened kit can go back within 30 days for a full refund, and we pay the return shipping.
• Free shipping — We offer free standard shipping on every order. No minimum purchase, no surprise fees at checkout.
• Responsive communication — If there's ever an issue, we want to hear about it. We'd rather solve a problem quickly than lose your trust.

These are the terms we hold ourselves to, and they are the same ones written into our shipping and refund policies. If we fall short of them, tell us and we will put it right.