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Skittlers Sorter

Contest Winner
Candy Dispenser

Print Profile(1)

All
X1 Carbon
H2D
X1
A1
H2D Pro
P1P
H2C
H2S
X2D
P1S
P2S
X1E
A2L

0.2mm layer, 4 walls, 15% infill
0.2mm layer, 4 walls, 15% infill
Designer
36.6 h
6 plates
5.0(3)

Open in Bambu Studio
Boost
925
1346
98
107
307
38
Released 

Description

⚠️ Update: A new and improved version of this project is now available.

I’ve released **Skittles Sorter V2**, based on real-world use in classrooms and demos. 
It runs smoother, is faster, and includes practical improvements like removable candy containers.

👉 Check out V2 here: https://makerworld.com/en/models/2753363-skittler-sorter-v2#profileId-3055268


🔧 Project Description

This color-sorting machine was built as part of a guest lesson I gave to a group of 10-year-old primary school students.
The goal? Show them that technology can be both fun and functional, and inspire them to explore the world of electronics, 3D design, and automation.

The challenge was to create something real within a short timeframe — and what better task than the classic: sorting Skittles by color?

Of course, the kids immediately pointed out that they could sort candy faster by hand (smart little critics 😄),
but once they saw the machine in action — reading colors, rotating, and using servos to open trapdoors — their excitement was priceless.

This machine was designed in Fusion360, 3D printed on a Bambu Lab X1 Carbon, and controlled with an Arduino Uno R3 using a TCS3200 color sensor, stepper motor, and multiple servos via PCA9685.

🎯 Why Share This?

I believe that every engineer, maker, and tech wizard should take the opportunity to inspire kids.
Projects like this show that technical skills can be used creatively and practically.
Our future as a sector depends on sparking interest in the next generation.

💬 If this project gets just one kid more excited about engineering... it's a win.

Please feel free to:

Rebuild it

Improve it (there’s a lot of room for that!)

Share it in classrooms, makerspaces, or just for fun

📦 What’s Included

All 3D components in .STL and .OBJ formats

Demonstration video (linked below)

Wiring info & component pinouts (images)

For the Arduino Code visit Github:
https://github.com/RexoLudus/SkittlerSorter

🧰 Bill Of Materials (BOM)

Below is a list of parts used in this build. You can adapt or extend it depending on availability and use case.

PartDescription 
Arduino Uno R3Main controller boardLink
TCS3200 color sensorFor detecting Skittles colorsLink
PCA9685 servo driverFor controlling multiple servosLink
7x Servo SG90 motors 180Used to open trapdoorsLink
1x Servo SG90 motor 360Used for Skittlers bufferLink
Nema17 Stepper motorFor rotating the turntableLink
Steppen driver DRV8825For rotating the turntableLink
Motor driver expansion boardFor rotating the turntableLink
Microswitch (KW11-3Z-1)For turntable positioningLink
12V → 5v Power modulePower convertor for PCA9685 and Servo'sLink
12v 2A Power supplyGeneral power supplyLink
Female DC power plugGeneral power supplyLink
2x Buttons (12mm)For interaction or debuggingLink
1x 51105 BearingFor smooth rotation turntableLink

 

🎥 Video Demonstration

Includes a walkthrough of the machine, how it works, and the 3D design.

🙌 Final Note

This was built in just a few days — it's far from perfect, but that’s the point:
Start, build, learn, improve. And most of all: inspire others.

🔩 Built with love, tech, and a lot of servo wiggles.

Let’s get more kids into tech! 💡

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License

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