The BinaryBin is a fully 3D-printable, snap-together locking container powered by a programmable 16-bit binary code. It’s part puzzle, part teaching tool, and 100% nerdy—in the best possible way.
**What Makes It Special:**

- Mechanical DIP-style binary switches (16 total) grouped into 4 nibbles for easy binary → hex conversion
- Orbital gear-driven lock system that only disengages when the correct code is entered
- Programmable mechanism lets you set your own combination
- Non-binary switch state lets you “erase” the visible code after unlocking
- Hexadecimal encoding legend built into the layout (great for teaching or learning)
- Concealed mechanical latches, controlled entirely by the geartrain
- Fully printable — no electronics, no glue, no screws

**Educational & Fun**
Learn (or teach) how binary and hexadecimal systems work—by actually using them. It’s a brainy hands-on demo disguised as a seriously cool lockbox.

**Ideal For:**

- Puzzle lovers & escape room designers
- STEM educators & students
- Nerdy gift-givers
- Makers and collectors of mechanical marvels

**Printing Tips:**
- No supports required – all necessary supports are built in
- Includes an optional tool for disassembly
- PLA recommended with standard 0.4mm nozzle
- Full print & slicer settings included in the images

**Code it. Turn it. Unlock it.** The BinaryBin isn’t just a container—it’s a hands-on lesson in binary logic, gears, and clever design. Post your prints, remix your codes, and share your builds!

Please see the linked video for assembly instructions.

---
**Related Links**
[3-digit Logical CardLock Case - The Programmable Gift Card Case with a Twist](https://than.gs/m/1464652)
[4-digit Logical CardLock Case - The Programmable Cash Case with a Twist](https://than.gs/m/1467071)
[PuzzleLock Box — Lock and Puzzle in a Box](https://than.gs/m/1439725)
[Programmable Combination Lock Gift Box](https://than.gs/m/1204871)
[StashCan 2.1 - 3D Printed Secret Safe with Programmable Lock](https://than.gs/m/1060354)
[Sequential Discovery Puzzle Gift Box #1 (GBS1)](https://than.gs/m/1227965)
[Centrifugally Unlocked Lock Box (BXC1)](https://than.gs/m/1266146)
[Locking Heart - Spin To Open](https://than.gs/m/1266312)

---
Please [join the LogicalPlanet Discord community via my linktree](https://linktr.ee/logicalplanet) to discuss this and any other LogicalPlanet projects, upcoming projects, ideas and anything else related to LogicalPlanet.   

**[https://www.logicalplanet.com/](https://www.logicalplanet.com/)**
email me at [logicalplanet3d@gmail.com](mailto:logicalplanet3d@gmail.com) 

---
**Revisions and Updates**
I occasionally update and revise my designs. When I do, I’ll document the changes here. Check back periodically for the latest revision notes or if you’re experiencing any issues with a model.  

2025-06-10: I have added non-AMS versions of the lid and switch plate.



BinaryBin – 16-Digit Binary Coded Lockable Container

BinaryBin 1v00a 121 Sun Gear and handle.stl

BinaryBin 1v00a 101 Lid (non-AMS version).stl

BinaryBin 1v00a 111 Switch Disk (non-AMS version).stl

**STEMFIE Riders Collection – 3D-Printable Fun on Wheels!**

Get ready to roll with the STEMFIE Riders Collection—a set of 3D-printable bicycles and tricycles that bring endless fun to your STEMFIE builds! This collection includes:

- A tiny Toddler Trike for the little ones 
- A sleek Two-Wheeler for the daring rider 
- A sleek Two-Wheeler with stabilizers 
- A sturdy Big Trike for extra stability and style 

These models, designed for easy 3D printing and endless creativity, are perfect for young makers, educators, and STEM enthusiasts. Download, print, and let your imagination ride free!

---
**ASSEMBLY VIDEOS**
 - [STEMFIE Riders - Bike](youtu.be/ZVpjwAHeV1U)
 - [STEMFIE Riders - Tiny Trike](youtu.be/HQ8wQB7fwx4)
 - [STEMFIE Riders - Trike](youtu.be/h9jSlE7UKHo)
 - [STEMFIE Riders - Bike with Stabilizers](youtu.be/HVB287ppzIA)

---
**Assembly Tools**
 - [Download the STEMFIE Driver](https://than.gs/m/1230328)

 - [Download the STEMFIE Spanner](https://than.gs/m/1230330)

---
 - **Support the STEMFIE open-source toy**—[join us here on Thangs](https://than.gs/u/6624?plans=true) and be part of our growing community!

 - **STEMFIE news** 👉 [x.com/Stemfie3D](https://x.com/stemfie3d)
---

STEMFIE Riders Collection

STEMFIE Project - SPS-000014 - STEMFIE Riders Collection - Bike with Stabilizers.3mf

SMARS acronym of “Screwless/Screwed Modular Assemblable Robotic System” is a simple robot designed to the educational field. The main features of SMARS are the reduced number of components, the possibility of mount it without screws and without soldering any part, it doesn’t need glue or similar and it’s not expensive to build. Another main point of SMARS is the modular design. You can mount different sensors and tools and design your own parts. In future I’ll add new modules or DLC to improve the model but It would be nice if you could share your mods too.
To build the basic model (with “chassis -SL.stl”) you just need few extra components:
https://smars.shop/products/smars-v1

SMARS MODULAR ROBOT 

chassis_-SL.stl

Practical print-in-place design who fits an Arduino UNO and a breadboard, ideal for students or nomad makers. If you need an Arduino  or a breadboard, have a look here:

- Breadboard 
1. https://amzn.to/3eojCO9
2. https://s.click.aliexpress.com/e/_Dlyzzvp

- Arduino
1. https://amzn.to/3RLbC8v
2. https://s.click.aliexpress.com/e/_DEVibVZ 

If you want to print the logo in a different color, here you can find some useful information

IF YOU WANT A VERSION WITH CUSTOM LOGO, JUST SEND ME A MESSAGE ;)

Stem

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BinaryBin – 16-Digit Binary Coded Lockable Container

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SMARS MODULAR ROBOT

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