An open-source, precision motorized camera slider engineered with NEMA 23 stepper motors, Trinamic TMC2208 drivers, and robust aluminum extrusion rails. This high-performance build is powered by embedded C++ firmware running on an Arduino-compatible board, offering smooth motion control for cinematic shots and timelapses.
📺 Click to watch the full build video below:
- ⚙️ Trinamic TMC2208 Motor Drivers — Whisper-quiet stepper control with microstepping and stall detection
- 🧠 Embedded C++ Firmware — Lightweight, real-time codebase written in modern C++ for performance and modularity
- 🏗️ NEMA 23 Stepper Motors — High-torque motors ensure smooth, vibration-free motion
- 🛤️ 20x60 Aluminum Extrusion Rail — Stiff and stable track structure for long sliding spans
- 📟 OLED Status Display — SSD1306 I²C screen for live feedback and settings interface
- 🎛️ Rotary Encoder Interface — Intuitive UI for speed, travel distance, and direction selection
- 🧰 3D-Printed Mounts and Carriage — Custom-printed parts for easy integration and minimal backlash
| Component | Description |
|---|---|
| Microcontroller | Arduino Nano or equivalent (5V logic recommended) |
| Motor Drivers | TMC2208 SilentStepStick (UART or standalone mode) |
| Stepper Motors | NEMA 23 (e.g. 2.8A 1.26Nm torque) |
| Linear Rail | 20x60 mm Aluminum Extrusion |
| Pulley System | GT2 Timing Belt and 20T Pulleys |
| Display | SSD1306 OLED (I²C) — |
| Input Device | Rotary Encoder with push-button |
| 3D-Printed Parts | Carriage, End Stops, Motor Mounts |
| Miscellaneous | Screws, V-slot rollers, wiring, connectors |
The firmware is written in embedded C++, structured with a modular and interrupt-safe architecture. Key features include:
- 🧠 Stepper Motion Engine — Timer-driven microstepping control with trapezoidal acceleration profiles
- 📐 Configurable Travel Bounds — Software-defined soft stops and homing support
- 🔁 Rotary Encoder Interface — Debounced encoder input with push-button support for navigation and value adjustment
- 📺 SSD1306 OLED Interface — Displays current position, target speed, and system status via I²C
- 🧭 User Interaction Layer — Simple UI framework reused across Lechnology builds
This project is licensed under the Lechnology Non-Commercial MIT + Beerware License:
If you use this and we meet in person, you're invited to buy me a coffee or beer ☕🍺
Commercial use is prohibited without prior approval.
See LICENSE.md for full terms.