DIY Motorized Roller Blind System 

This is a simple and practical 3D printable motorized roller blind system designed for DIY makers, electronics hobbyists, and 3D printing enthusiasts.

The system is designed to manually control a roller blind using a 12V DC geared motor, powered by a 3.7V 18650 Li-ion battery. The battery voltage is boosted to 12V through a Type-C Li-ion charging and DC-DC step-up module. Direction control is handled with a 6-pin ON-OFF-ON rocker switch, allowing forward, stop, and reverse movement.

This project is intended as a simple low-cost DIY solution for motorizing a small roller blind or similar rotating mechanism.

FEATURES

- 3D printable roller blind motor system

- Free STL files

- Designed for DIY electronics projects

- Uses a 12V DC geared motor

- Powered by a 3.7V 18650 Li-ion battery

- Type-C charging and boost module support

- Manual forward / stop / reverse control

- Compact and simple mechanical design

- Suitable for makers, hobbyists, and prototyping

COMPONENTS USED

DC Geared Motor

Model: JGB37-520 DC12V 319 RPM

Operating Voltage: 12V

Speed: 319 RPM

Current Draw: 140 +/- 40 mA

Load Torque: 1.14 kg-cm

Stall Torque: 4.5 kg-cm

Shaft: 6 mm D-shaft

Rocker Switch

Model: KCD4 ON-OFF-ON

Type: 6-pin rocker switch

Function: Manual forward / stop / reverse control

Size: 35 x 25 mm

Battery

Type: 18650 Li-ion battery

Voltage: 3.7V

Capacity: 2200 mAh

Discharge Rate: 5C

Charging and Boost Module

Type: USB Type-C Li-ion charging and DC-DC step-up module

Battery Input: 1 x 3.7V 18650 Li-ion

Output: Adjustable DC output

Output used in this project: 12V

Cables

2 x female-to-male jumper wires

Approx. 10 cm motor power cable

POWER FLOW

18650 Battery 3.7V -> Type-C Charging and Step-Up Module -> 12V Output -> DC Geared Motor

This allows a single 18650 battery to power the 12V motor through the boost converter.

3D PRINTING NOTES

Recommended print settings:

Material: PLA, PETG, or ABS

Layer Height: 0.20 mm

Wall Count: 3 walls or more

Infill: 25-40%

Nozzle: 0.4 mm

Supports: Depends on the part orientation

For stronger mechanical parts, PETG or ABS is recommended. PLA can also be used for testing and light-duty applications.

IMPORTANT NOTES

- This is a DIY project and may require basic electronics knowledge.

- Motor direction and wiring should be checked carefully before use.

- Make sure the boost module is adjusted to 12V output before connecting the motor.

- Battery protection and safe charging practices are recommended.

- Component dimensions may vary slightly depending on the supplier.

- The STL files may need small adjustments depending on your exact motor, switch, and module dimensions.

- Electronics are not included. This download contains only the 3D printable STL files.

DISCLAIMER

This project is provided for educational and DIY purposes.

Use proper battery safety precautions when working with Li-ion cells.

The creator is not responsible for incorrect wiring, battery misuse, component damage, or improper installation.

Please note: Electronics, motor, battery, switch, cables, and other hardware are not included. This download contains only the 3D printable STL files.

**

“For personal/non-commercial use.”

**