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Dan Hoizner

PROFILE

Dan Hoizner

Dan Hoizner developed and enhanced embedded system tools across the spruceUI/spruceSource and spruceUI/spruceOS repositories, focusing on cross-platform UI, configuration, and developer workflow improvements. He implemented features such as adaptive text rendering, vertical orientation, and rotation-aware display logic using C and SDL2, addressing device-specific challenges in readability and layout. Dan introduced a two-pane file manager for Dingux and built the EasyConfig tool for scalable configuration management on the Miyoo A30, leveraging Makefile-driven builds and cross-compilation. His work included containerized development environments and shared memory utilities, demonstrating depth in system programming, DevOps, and embedded Linux development for reliable, maintainable solutions.

Overall Statistics

Feature vs Bugs

92%Features

Repository Contributions

16Total
Bugs
1
Commits
16
Features
11
Lines of code
16,480
Activity Months3

Work History

April 2025

7 Commits • 5 Features

Apr 1, 2025

2025-04 Monthly Summary: Delivered cross-platform UI and developer tooling improvements for spruceSource. Key features include vertical text orientation with percentage-based positioning and rotation support; multi-device input polling for getevent; development container configurations for the a30 and brick targets to streamline cross-compilation; shared memory tooling for display/state debugging; and UI spacing/build environment refinements for the flip platform. Major bug fix addressed rotation-based text positioning for 90/270-degree displays, ensuring correct rendering across devices. Overall impact: more reliable, scalable UI rendering and faster, more automated development workflows across architectures. Technologies/skills demonstrated include Docker/dev containers and Buildroot ARM cross-compilation, multi-device input handling, shared memory utilities, CLI-driven display control, and UI/layout constants tuning.

March 2025

1 Commits • 1 Features

Mar 1, 2025

March 2025 performance summary for spruceUI/spruceSource: Delivered the EasyConfig Configuration Tool for Miyoo A30, including the Makefile, utility functions for file operations, global settings management, and the main application logic to load, display, and save configuration files. The tool supports aliasing, grouping, and conditional display of settings based on modes, enabling scalable, device-specific configurations.

January 2025

8 Commits • 5 Features

Jan 1, 2025

January 2025 Monthly Summary focused on delivering security, usability, and cross-platform improvements across spruceOS and spruceSource. Centralized launch orchestration, standardized emulator settings, and introduced native file management capabilities for target hardware. The work emphasizes business value through security hardening, reduced admin overhead, and reliable workflows across devices.

Activity

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Quality Metrics

Correctness85.6%
Maintainability83.8%
Architecture85.0%
Performance78.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

CC++DockerfileMakefileShell

Technical Skills

Build SystemsBuildrootC ProgrammingC programmingC++ DevelopmentC/C++Command-Line ToolsCommand-line InterfaceConfiguration ManagementContainerizationCross-compilationDevOpsDisplay LogicDockerEmbedded Development

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

spruceUI/spruceSource

Jan 2025 Apr 2025
3 Months active

Languages Used

CC++ShellDockerfileMakefile

Technical Skills

C programmingC/C++Cross-compilationEmbedded DevelopmentFile ManagementImage manipulation

spruceUI/spruceOS

Jan 2025 Jan 2025
1 Month active

Languages Used

Shell

Technical Skills

Configuration ManagementEmulator ConfigurationSSH ConfigurationShell ScriptingSystem Administration

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