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Anagram: Linux-Powered Bass FX Processor
Precision UI Design Meets Audio FX Innovation.
Problem / Solution
Anagram is one of the most powerful hardware units in our industry, paired with a fully mature and optimized operating system and a responsive LVGL-based UI. This combination gives us a foundation not just for what Anagram is today, but for continuous development and evolution in the years to come.
Key Results
Drag-and-Drop FX Routing
LVGL helped develop the central UI component: a drag-and-drop screen where users can rearrange signal chains with live feedback and backend integration.
Touch-First Experience
The 7-inch high-brightness touchscreen runs a fully LVGL-powered interface, enabling precise control in both studio and stage environments.
Linux-Ready UI Stack
Anagram runs a Buildroot-based Linux OS with JACK2, mod-host, and LV2 plugin support, and LVGL integrates seamlessly with this stack.
Modular and Scalable Design
LVGL’s architecture enabled reusable widgets and UI modules, allowing Darkglass’s internal team to expand functionality quickly.
Co-Development Approach
LVGL and Darkglass worked closely together, with our engineers handling the most complex UI features while their team iterated on the product vision.
Project Overview
LVGL’s task was to help Darkglass develop a modular, scalable UI for Anagram, beginning with the effects rearrangement screen, the most technically complex and user-critical feature.
Goal
Ensure fast, smooth drag-and-drop interaction to create an intuitive, stage-ready experience for musicians.
Key Deliverables
- Backend-integrated drag-and-drop functionality
- Dynamic signal chain reordering
- Expandable FX library selection via UI
- Modular widgets designed for reuse
Approach
LVGL’s services team built core components as flexible, scalable UI blocks, laying the foundation for broader interface development by Darkglass’s internal team.
Technical Specs (UI Focused)
Technical Highlights
- Real-Time Touch Interaction: Sub-2ms roundtrip latency on FX changes
- Embedded + Open Source Harmony: LVGL paired with Linux, JACK2, and LV2 plugin architecture
- Visual Routing System: Touchscreen UI for managing up to 24 FX blocks
- Expandable Design: SDK-ready architecture to support third-party plugin development in future
Inside Anagram’s UI
Anagram's UI, powered by LVGL, lets musicians:
- Load and manage amp models (NAM, AIDA-X) and cabinet IRs
- Access bass-focused DSP effects across EQ, dynamics, modulation, delay/reverb
- Control presets, scenes, footswitch bindings, and global parameters via touchscreen
- Navigate seamlessly between live and studio modes
- It also integrates with Darkglass Suite for preset management, IR uploads, and future updates.
Future Projects
Looking ahead, Darkglass has just released Entropia - Anagram’s first “super block”. Designed with a dedicated, custom UI built on LVGL, Entropia showcases how the platform can go beyond modular blocks to deliver new levels of interaction and sound design. As Darkglass expands with new features and products, LVGL will remain a core part of delivering responsive, musician-friendly interfaces that evolve with the platform.
Ready to transform your UI?
If you’re facing similar challenges with your current UI tools or looking to enhance your product’s user experience, LVGL can help. Discover how our open-source, high-performance framework can revolutionize your development process and drive significant improvements in your projects.
Contact us today to learn more about how LVGL can make a difference for your company. We’re eager to hear your story and explore how we can support your goals.