openhab/openhab-addons
May 2025 – Mar 2026
4 Months active
Languages Used
JavaXML
Technical Skills
Device IntegrationIoTSchema DefinitionAPI DevelopmentIoT IntegrationJava Development
Ronny Grun
PROFILE
Ronny Grun
Contributed to the openhab-addons repository by developing and enhancing IoT device integrations, focusing on both new feature delivery and reliability improvements. Built the initial Viessmann Binding, enabling secure OAuth-based API integration and automatic device discovery for Viessmann hardware, and expanded device support with schema definitions for PAUTIX LED controllers. Improved backend stability by refining Java-based lifecycle management, robust error handling, and accurate unit parsing for energy and time metrics. Addressed runtime reliability through enhanced HTTP polling and user-facing status messages. Leveraged Java, XML, and OpenHAB technologies to streamline onboarding, reduce manual configuration, and support scalable, maintainable IoT solutions.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
9Total
Bugs
2
Commits
9
Features
4
Lines of code
13,142
Activity Months4
Your Network
119 peopleWork History
March 2026
3 Commits • 1 Features
Mar 1, 2026Concise monthly summary for 2026-03 focused on delivering reliability and functionality in openhab addons. Two primary areas: Viessmann Binding improvements and robust HTTP polling/error handling, delivering measurable business value through more accurate live data, better resilience against outages, and clearer user status messages.
3 Commits • 1 Features
Mar 1, 2026Concise monthly summary for 2026-03 focused on delivering reliability and functionality in openhab addons. Two primary areas: Viessmann Binding improvements and robust HTTP polling/error handling, delivering measurable business value through more accurate live data, better resilience against outages, and clearer user status messages.
March 2026
January 2026
4 Commits • 1 Features
Jan 1, 2026Month: 2026-01 Key features delivered: - Thermal energy measurement support in kiloJoules for Viessmann devices, enabling accurate energy reporting and downstream analytics. Major bugs fixed: - Viessmann binding stability and reliability fixes: - Prevent operations on disposed handlers and correct disposed state during initialization, reducing runtime errors during device lifecycle transitions. - Fix parsing of unit cubic meters per hour to ensure reliable metrics reporting. Overall impact and accomplishments: - Significantly improved binding reliability and lifecycle correctness for Viessmann devices, leading to fewer runtime errors and more stable automations. - Enhanced energy data fidelity with kiloJoules reporting, enabling precise energy usage analytics and billing-related insights. - Improved data consistency through correct unit parsing, benefiting dashboards and historical comparisons. Technologies/skills demonstrated: - Java/OSGi-based binding development and lifecycle management. - Robust unit parsing and unit handling for energy-related metrics. - Code hygiene, reviewability, and commit traceability (diffs referenced below). Commit references (for traceability): - Viessmann binding stability: 748a50cddca05a6216ac08e09c6fbdd33d123480 - Viessmann binding initialization state: 818d8f1ae9f727e545cceef7d2f146c3843effc0 - Viessmann unit parsing fix: f02aefc69fb3a8f717954aae8008164b3750fe6e - Thermal energy measurement in kiloJoules: c7e482593980b15afc6f1eb12276045374894017
January 2026
4 Commits • 1 Features
Jan 1, 2026Month: 2026-01 Key features delivered: - Thermal energy measurement support in kiloJoules for Viessmann devices, enabling accurate energy reporting and downstream analytics. Major bugs fixed: - Viessmann binding stability and reliability fixes: - Prevent operations on disposed handlers and correct disposed state during initialization, reducing runtime errors during device lifecycle transitions. - Fix parsing of unit cubic meters per hour to ensure reliable metrics reporting. Overall impact and accomplishments: - Significantly improved binding reliability and lifecycle correctness for Viessmann devices, leading to fewer runtime errors and more stable automations. - Enhanced energy data fidelity with kiloJoules reporting, enabling precise energy usage analytics and billing-related insights. - Improved data consistency through correct unit parsing, benefiting dashboards and historical comparisons. Technologies/skills demonstrated: - Java/OSGi-based binding development and lifecycle management. - Robust unit parsing and unit handling for energy-related metrics. - Code hygiene, reviewability, and commit traceability (diffs referenced below). Commit references (for traceability): - Viessmann binding stability: 748a50cddca05a6216ac08e09c6fbdd33d123480 - Viessmann binding initialization state: 818d8f1ae9f727e545cceef7d2f146c3843effc0 - Viessmann unit parsing fix: f02aefc69fb3a8f717954aae8008164b3750fe6e - Thermal energy measurement in kiloJoules: c7e482593980b15afc6f1eb12276045374894017
November 2025
1 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary for openhab-addons. Focused on delivering core IoT binding capabilities by introducing the Viessmann Binding for openHAB, enabling secure integration with Viessmann devices via OAuth and automatic device discovery. This initial contribution establishes the foundation for broader Viessmann device support and accelerated customer onboarding. The work centers on delivering a scalable addon binding with a clean integration path for future enhancements (PR #19123, commit 38360a849cfd2d5817a8777d3ea81bf6ebfa34c1). No major bugs reported this month; feature is in place for early adoption and incremental improvements.
1 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary for openhab-addons. Focused on delivering core IoT binding capabilities by introducing the Viessmann Binding for openHAB, enabling secure integration with Viessmann devices via OAuth and automatic device discovery. This initial contribution establishes the foundation for broader Viessmann device support and accelerated customer onboarding. The work centers on delivering a scalable addon binding with a clean integration path for future enhancements (PR #19123, commit 38360a849cfd2d5817a8777d3ea81bf6ebfa34c1). No major bugs reported this month; feature is in place for early adoption and incremental improvements.
November 2025
May 2025
1 Commits • 1 Features
May 1, 2025In May 2025, contributed hardware compatibility improvements by adding PAUTIX HH-1201K3E LED Controller support to the Tuya binding in openhab-addons. This effort introduced a new schema to enable the Tuya binding to recognize and configure the PAUTIX WiFi/Bluetooth LED controller, simplifying onboarding for users and broadening support within the ecosystem.
May 2025
1 Commits • 1 Features
May 1, 2025In May 2025, contributed hardware compatibility improvements by adding PAUTIX HH-1201K3E LED Controller support to the Tuya binding in openhab-addons. This effort introduced a new schema to enable the Tuya binding to recognize and configure the PAUTIX WiFi/Bluetooth LED controller, simplifying onboarding for users and broadening support within the ecosystem.
Activity
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Quality Metrics
Correctness95.6%
Maintainability86.6%
Architecture88.8%
Performance86.6%
AI Usage24.4%
Skills & Technologies
Programming Languages
JavaXML
Technical Skills
API DevelopmentAPI IntegrationAPI integrationBackend DevelopmentDevice IntegrationIoTIoT DevelopmentIoT IntegrationJavaJava DevelopmentOAuth AuthenticationOpenHABSchema DefinitionXML Configurationbackend development
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