Zeta 3D Printer

The Zeta 3D Printer is an advanced, high-precision 3D printer capable of producing ultra-fine details using a UV LED projection system. My contributions were pivotal in developing firmware, enhancing print quality, and upgrading the Zeta model for 4K capabilities.

My Role and Contributions

My primary responsibility involved writing low-level firmware in Embedded C to control essential components, including stepper motors for multi-axis control, laser distance sensors, door sensors, and aesthetic LEDs for user feedback. The firmware was designed to support complex multitasking, allowing synchronous operation of various components without blocking tasks.

I created a custom serial command system to receive commands from a Linux-based control system, developed in Qt (C++), and displayed on a touchscreen UI. This system allowed efficient communication between the embedded firmware and control software, significantly enhancing user interaction and control over the printing process.

Enhancing Print Quality

I implemented image processing techniques to minimize visible lines on fine prints, providing a smoother surface finish. This was achieved by processing the projected images, allowing the UV LED projector to display refined images that improved print resolution. Additionally, I addressed tuning issues reported by international clients, optimizing the firmware in response to feedback.

Zeta 4K Upgrade and Client Support

With the release of the Zeta 4K model, I developed firmware to interface with a 4K UV LED Projector, allowing higher-resolution prints due to the increased pixel density. During my time, a Zeta 4K unit was shipped to a client in China, and I was responsible for resolving any bugs, including an issue where the printer wouldn’t immediately accept new parameter settings. I scheduled and led meetings with the client, pushing remote firmware updates as needed.

Developing Linux Executables in Qt

I created production-ready Linux executables for the Zeta control software using Qt and CMake, packaging the software and dependencies into a single executable for efficient deployment. This approach streamlined the installation process and ensured compatibility with the client's systems.

Learn more about the Zeta 3D Printer on the official AM Prototyping Labs product page.