Developing modern Human-Machine Interfaces (HMIs) for industrial panels, embedded devices, or SCADA systems often requires high-quality visual assets (widgets, gauges, buttons, trends). Commercial libraries can be costly and restrictive. This report identifies and evaluates to reduce development time, improve UI/UX, and maintain cost efficiency. Key findings indicate that Qt’s built-in assets (with open-source license), FOSS SVG icon sets, and specialized SCADA libraries offer viable, production-ready solutions.
Eliminates the need to draw individual pumps, valves, and pipelines, cutting engineering hours significantly.
Modern, web-based HMI development where resolution independence is critical. Where to find: Visit the Opto 22 Blog . 3. LVGL Open-Source Graphics Library
This article explores the best free HMI graphics libraries, libraries of symbols, and frameworks available to build modern, interactive industrial dashboards. What is an HMI Graphics Library? free hmi graphics library
When downloading and implementing free graphics, it is critical to select assets that align with modern operational standards. The industry has shifted away from photorealistic, 3D, brightly colored graphics toward . The Problem with Legacy 3D Graphics
Pre-made graphics allow for building screens quickly rather than designing them from scratch.
The HMI landscape is rapidly evolving, and the world of free graphics is at the forefront of these changes. Key findings indicate that Qt’s built-in assets (with
For more information on free HMI graphics libraries, check out the following resources:
Always prioritize SVG files for dynamic equipment (pumps, valves) and reserve PNG files for static background images or complex logos. Implementing Free Graphics: Best Practices
Avoid gradients, shadows, and realistic textures. Flat 2D objects reduce cognitive load and load significantly faster on hardware panels. Common Technical Formats: SVG vs. PNG vs. BMP Where to find: Visit the Opto 22 Blog
For users seeking a full-featured SCADA/HMI system rather than just a widget set, pvbrowser is an excellent choice. It is a 100% open-source process visualization and SCADA system.
Standard icon sets often lack the specific symbols required for SCADA, PLCs, and industrial automation (P&ID symbols).
In modern industrial automation, the Human-Machine Interface (HMI) is more than just a screen; it is the critical bridge between complex machine data and operator efficiency. However, developing high-quality, intuitive HMI screens can be time-consuming and expensive.
SVG (Scalable Vector Graphics) allows for high-quality scaling on any screen size.