Sparklet is Embien's own royalty-free embedded graphics library, engineered over a decade of instrument cluster, HMI, and industrial display projects. It delivers hardware-accelerated GUI development for embedded systems on resource-constrained MCUs — without royalties, without a cloud dependency, and without the overhead of a full RTOS graphics stack.
The hardest part of embedded HMI development is not designing the UI — it is making it run smoothly on a Cortex-M with 256 KB of RAM, 1 MB of flash, and a 16 MHz clock. Off-the-shelf GUI frameworks built for desktop or mobile impose memory and CPU demands that embedded hardware simply cannot absorb. Sparklet was built to solve exactly this problem.
Developed by Embien's embedded software team across hundreds of GUI development for embedded systems projects — automotive instrument clusters, industrial HMIs, medical device displays, and consumer electronics panels — Sparklet emerged as a production-tested embedded graphics library that runs efficiently on bare-metal and RTOS-based targets alike. It provides a rich widget library, smooth animation engine, and hardware-accelerated rendering while consuming a fraction of the resources that competing solutions demand.
Sparklet is now available as a standalone embedded graphics library at sparkletui.com. Embien uses Sparklet in client programs to accelerate royalty-free embedded GUI design delivery — so when you work with us on an HMI project, you may already be getting Sparklet under the hood.
Sparklet was designed by embedded engineers for embedded engineers — every feature addresses a real constraint encountered in production GUI development for embedded systems.
Sparklet leverages the 2D GPU cores (PXP, G2D, GPU2D) available on NXP i.MX and similar SoCs to offload rendering from the CPU. On MCUs without a GPU, its optimised software renderer delivers fluid animations that competing embedded graphics libraries cannot match at the same clock speed.
Unlike many embedded graphics library solutions that charge per-unit royalties, Sparklet is licensed royalty-free. Pay once per project or per platform port — then ship as many units as your product demands. Ideal for high-volume embedded HMI products where per-unit costs compound rapidly.
Sparklet's architecture separates the display driver from the rendering engine, making it straightforward to port to new hardware. Validated ports exist for NXP i.MX 6/8/RT, Renesas RH850 and RZ, STM32 families, and ARM Cortex-M4/M7 targets. GUI development for embedded systems across silicon vendors, from a single codebase.
Sparklet ships with a comprehensive widget library — gauges, sliders, progress bars, charts, list views, image viewers, text renderers, and animated icons — all optimised for the memory and rendering constraints of embedded systems. Royalty-free embedded GUI design from day one, not from scratch.
Sparklet has been deployed in production embedded HMI programs across automotive instrument clusters, industrial operator panels, medical device displays, and consumer electronics products. When Embien takes on a GUI development for embedded systems engagement, Sparklet is the embedded graphics library of first choice — battle-tested on the same platforms your product runs on. The result for clients is faster royalty-free embedded GUI design delivery, with fewer integration surprises.
If your project needs a custom widget, a new platform port, or an integration between Sparklet and a specific RTOS or display controller, Embien's team can do it — we wrote the library. And if you want royalty-free embedded GUI design without building a team in-house, Embien can take the HMI scope end-to-end.
Explore Sparklet at sparkletui.com for full documentation, platform ports, and licensing — or speak to Embien's team if you need embedded HMI development services alongside the library.