HMI & GUI
Development

Custom HMI and GUI Development for Embedded Devices

Build User Interfaces That Fit Your Embedded Product

Modern embedded devices require more than robust hardware — they need smooth, intuitive interfaces that align with user workflows and environmental constraints. Whether you're designing for touchscreens in harsh environments, compact wearables, or complex industrial displays, Promwad helps create custom HMIs and embedded GUIs that match your device and application.

We specialise in GUI and HMI development for embedded systems, combining real-time responsiveness, hardware efficiency, and design precision.

Our Embedded GUI and HMI Development Services

We offer end-to-end GUI solutions, from concept to deployment:

UI/UX Design for Embedded Devices

Screen flows and widget libraries optimised for small displays
Touch and non-touch interfaces (knobs, buttons, voice)
Dark mode, localisation, and accessibility options

GUI Framework Integration

Qt (for embedded Linux), LVGL (for MCUs), TouchGFX (STM32)
Custom OpenGL or SDL rendering engines
FreeRTOS and bare-metal UI integration

Performance Optimisation for Low-Power Devices

Memory-constrained rendering techniques
Efficient use of framebuffers, DMA, and hardware acceleration
GUI code profiling and boot-time optimisation

Multiplatform and Scalable UI Architecture

Porting UI between display sizes and platforms
Reusable component libraries and theming systems
Responsive layouts for varying resolutions and orientations

HMI for Industrial, Medical, and Automotive Devices

IP-rated touch interfaces and glove-friendly designs
Safety-critical UI patterns for ISO-compliant products
CAN-based menu systems, cluster UIs, and remote display sync

Framework Comparison

We select the right GUI engine for your hardware — with predictable performance.

Qt for Device

Best Use Case: Rich UIs on embedded Linux
Platform Support: Linux, Android
Notes: Mature, scalable, large footprint

LVGL

Best Use Case: Lightweight UI on MCUs (bare-metal)
Platform Support: STM32, ESP32, NXP
Notes: Open-source, small footprint, flexible

TouchGFX

Best Use Case: High-performance STM32 UIs
Platform Support: STM32 only
Notes: STM-optimised, hardware-accelerated

Crank Storyboard

Best Use Case: Rapid prototyping and deployment
Platform Support: Linux, RTOS
Notes: Commercial, visual tooling, fast iteration

Where Custom HMI Adds Value

From simple interfaces to rich interactive dashboards — we align UI goals with hardware constraints.

Industrial Controllers

Rugged touch, real-time feedback, diagnostics

Medical Devices

Clean UI, gesture navigation, usability compliance

Consumer Electronics

Brand customisation, smooth animation, multi-input

Automotive Cockpits

Cluster UI, infotainment, DMS displays

Wearables & IoT

Minimal UI, context awareness, low power

Our Process

Whether you’re prototyping or launching, we guide the HMI journey:

Discovery & Requirements – Define end-user goals, display specs, and environment
Wireframing & Prototyping – Create interactive UI concepts and test flows
Framework Integration – Implement UI logic, rendering, and interaction patterns
Optimisation & Testing – Tune performance, validate responsiveness and safety
Deployment & Support – Flash-ready binaries, OTA-capable UIs, localisation