InkPond Native Typst Editor for iPhone & iPad
Formerly Typist, now shipped on the App Store as InkPond. Built with SwiftUI and a Rust FFI bridge to Typst, with live preview, multi-file projects, font management, and PDF export on iPhone and iPad.
Hey, I'm Qidi Lin,
based in Shanghai, building native apps, handheld software, and display hardware.
Microelectronics master's student.
Focused on typesetting tools, device UI, and next-gen display systems.
InkPond
Now on the App Store
TrimUI
Handheld-native apps and packaging
360 zones
MiniLED backlight algorithms
822,997 Reads
sspai writing
Formerly Typist, now shipped on the App Store as InkPond. Built with SwiftUI and a Rust FFI bridge to Typst, with live preview, multi-file projects, font management, and PDF export on iPhone and iPad.
A native WeRead client for TrimUI Brick with QR login, bookshelf browsing, paginated reading, chapter navigation, local resume state, and cloud progress sync across NextUI, Stock OS, and CrossMix-OS builds.
A native C + SDL2 vocabulary trainer for TrimUI Brick. It imports `.apkg` decks directly on device, keeps review state in SQLite, and ships as a polished button-first study flow.
A Nothing-inspired utility suite for TrimUI Brick with a dot-matrix clock, weather, countdowns, and timer pages, packaged as a ready-to-install NextUI app.
An FPGA-based MiniLED zonal backlight system that achieves real-time 1280x800@60Hz video processing with 360-zone luminance control, multiple local dimming algorithms, and ambient-light adaptive tuning.
A personal media collection system for books, movies, series, and music. Built with Astro and JSON-first storage to stay lightweight, portable, and easy to maintain long term.
Synthetic Metals, 2026 (IF = 4.6)
Investigates OLED light-extraction and color-shift tradeoffs using an external quasi-periodic convex-sphere film. Demonstrates enhanced extraction with low color shift and near-Lambertian distribution.
Explores TFSI ionic-liquid modified PEDOT:PSS to improve OLED hole injection and device stability. Currently focused on process tuning and repeatability validation.
2022 - 2024
Published long-form writing on tools, product design, and digital life in one of China's leading tech communities. Delivered 13 articles, 11 homepage features, and 822,997 total reads.
2022
Built a toaster temperature-control algorithm plus dot-matrix display driver and menu system for vertical electric fryers. Delivered end-to-end implementation on ATmega microcontrollers.
App & Product Engineering
SwiftUI, Rust FFI, SwiftData, iCloud workflows, Typst engine integration (InkPond)
Device Software
Linux embedded development, C / C++, SQLite, graphical UI, and on-device application delivery
Display & Hardware
Verilog HDL, Gowin FPGA, ATmega, local dimming pipelines and display tuning (MiniLED)
Design & Writing
Astro, TypeScript, Figma, Blender, tech writing (822,997 reads on sspai)