Open-Source App Turns reMarkable Tablet Into AI-Powered Harry Potter-Style Diary
Summary
A new open-source app called 'riddle' transforms the reMarkable Paper Pro tablet into a real-life version of Tom Riddle's enchanted diary from Harry Potter, using AI to read handwritten notes and respond with synthesized handwriting directly on the e-ink display in real time.
Key Points
- A new open-source project called 'riddle' transforms the reMarkable Paper Pro tablet into an interactive diary inspired by Tom Riddle's diary from Harry Potter, allowing users to write with a pen and receive AI-generated handwritten responses directly on the e-ink display.
- The app uses raw pen input, handwriting synthesis, and a vision LLM backend to read handwritten pages as PNG images and stream replies stroke-by-stroke in Dancing Script font, supporting OpenAI-compatible APIs or a local 'pi' process for model inference.
- Built in Rust with a C/C++ display host, riddle runs in two modes — a windowed AppLoad mode and a full-screen takeover mode that stops the vendor UI and drives the e-ink engine directly for the lowest possible latency, with the latest prebuilt release available for download on GitHub.