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Vivent Biosignals · Decision support
Plant-Driven Lighting
Translating plant-science knowledge into analysis and dashboards that help people reason about lighting and climate.
WORK / ARCHIVE
Projects and research
Data, software, plants, physical products and content. Each project explains the question, the approach, my contribution and the available material.
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Featured work
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Master’s research · Plant technology
When does a plant need more light?
A master’s thesis on plant biosignals, weather-based machine learning and more selective LED lighting in tomato cultivation.
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Founder story · E-commerce
Building Frenk4Business
Starting around seventeen, developing physical products and learning what it takes to run brands across marketplaces.
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The project archive
16 projects
FrenkKester.com: the portfolio behind the work
A bilingual portfolio that brings my work in data, plant technology and entrepreneurship together in clear, evidence-led project stories.
WhisperDictation: Dutch dictation for macOS
Extending an existing macOS dictation app with Dutch speech recognition, multilingual models and a Dutch interface, with audio processed locally.
Plant of the Week
Turning Vivent plant-sensor data into a playful office competition: a weekly plant champion, a Hall of Fame and a clear overview of plants that may need care.
Plant-Driven Lighting
Translating plant-science knowledge into analysis and dashboards that help people reason about lighting and climate.
Daily trial health overview in Slack
A scheduled Python workflow that brings trial connectivity and data completeness into a concise daily Slack table for plant scientists.
Building Frenk4Business
Starting around seventeen, developing physical products and learning what it takes to run brands across marketplaces.
F4B Diamond Painting
Developing creative products and connecting sourcing, packaging, marketplaces and customer service.
Regalo Rosa
Building a gift brand, with attention to products, marketplaces and the infrastructure behind international selling.
Learning to see through data
Computer-vision exercises exploring neural networks, representation learning and the effect of dataset choices.
When is an image label clear?
A scarf-classification exercise that made dataset definitions and visual edge cases concrete.
Recognising digits in patterned images
An image-classification exercise using digit images resembling colour-vision test plates.
Finmetria
An English-language social media project about business and the stock market. I used my experience with brand accounts to explore a new audience around a personal interest.
When does a plant need more light?
A master’s thesis on plant biosignals, weather-based machine learning and more selective LED lighting in tomato cultivation.
Mapping volcanic activity on Io
An exploration of planetary data, spatial validation and the uncertainty behind a convincing map.
Bahasa, without a connection
A browser-based Indonesian vocabulary app with flashcards, quizzes and local progress.
A small companion for coding
PokeTokenBar for Windows connects local Codex token usage to progress in an unofficial Pokémon companion app.
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Let’s talk.
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