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All Work IoT / Web

LoveLine

Digital Picture Frame Messenger

Role Full-Stack Engineer & Hardware Lead
Timeline 2024 — Present
Type IoT · Messenger · Hardware
Status Live
Screenshot of the LoveLine project by Matthias Bigl
Ongoing

A personal messenger with a physical 10cm display — like a tiny picture frame that shows messages from your loved one.

// 01 — Context

LoveLine is a messenger, but not the kind that lives on your phone. It's a small physical picture frame — 10 by 10 centimeters — that sits on your desk or nightstand. When your partner sends you a message, it just appears. No notifications, no apps to open. Just a quiet little screen letting you know someone's thinking of you.

// 02 — Problem

Texting feels throwaway.

Messages disappear in a feed between work chats and group notifications. There's nothing physical, nothing that stays. Couples in long-distance relationships especially lack that sense of presence — the feeling of being in the same room.

// 03 — How I Built It

A SvelteKit web app paired with an ESP32-powered display. You send a message or photo through the app, and it shows up instantly on the physical frame at your partner's place. Server-Sent Events keep everything real-time. An AI-powered date planner suggests things to do together, even from a distance.

What Makes It Special

10x10cm Physical Display Frame

AI-Driven 'Spark' Date Planner

End-to-End Privacy Architecture

Real-Time Photo & Message Streams

ESP32-Powered Hardware

// 04 — Outcome

A message that doesn't get buried.

A screen you actually glance at because it only shows what matters. LoveLine turns a digital message into something that feels closer to a handwritten note left on the kitchen counter.

// Case Study

// Built With

SvelteKit
ESP32
C++
OpenRouter
Gemini
Kimi
Server-Sent Events
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