Hello,
I'm Arttu Lehtola.
Thank you for your visit,
you can find my projects below.
Thank you for your visit,
you can find my projects below.
A live dashboard app made in 2026 where you can place virtual sensors on a grid. Watch the sensors detect activity and alert you when something goes wrong, all updating in real time with clean visualization. The application consists of a React frontend and a Java Spring Boot backend. Frontend handling lightweight visualization logic, while backend handles session-scoped state handling and streaming. The architecture of the service is visible from here, alongside metrics.
Notifier application made for personal use.
Minimalistic notifier app made in 2024 for desktop and mobile use cases. You select a sound file of your choice to play with your time conditions. The application is all about managing states and object references. It was made for personal use for setting workflow timers as I wanted a cross-platform compatible application. This project is launched with Next.js, utilizing JavaScript and HTML for both backend and frontend.
This is older, my first non-school React single page application from 2021. The developing process was straightforward. The aim of product owner was to get a page for both information and celebration for the occasion, afterwards the page was up for relevant contents of attendees. It was important to keep it usable for varying viewport sizes. The project presented is the barebones to showcase layout and styling.
A simple landing page picked up from larger application.
