Blog
Updates, guides and engineering notes about the Nexus Pen and Donna.
Fortune's FS8205A is TSSOP-8 only. Every SOT-23-6 part sold under that name is a second source with a different pinout.
Logan Holby4 min read
A top-contact panel, a bottom-contact connector, and the part that would fix it that Hirose does not make.
Logan Holby5 min read
An AI pen is a writing instrument with a voice assistant and a display built into it. You ask a question out loud, and the answer appears...
Nexus Pen4 min read
How we designed the 4-layer PCB inside Nexus Pen: the 120 x 19 mm size limit, learning KiCad, routing, and what 47 DRC violations taught us.
The Nexus Pen team1 min read
An early look at the Nexus Pen API for developers: custom modes, session webhooks, conversation history, and how the pen and backend fit together.
The Nexus Pen team1 min read
A daily study routine built around Nexus Pen: morning recap, lecture questions, deep work and evening recall.
The Nexus Pen team1 min read
Exam day can be stressful, but having the right tools and strategies in place makes all the difference between feeling prepared and feeli...
The Nexus Pen team1 min read
How Donna keeps context through a study session, adapts to the subject, and turns a conversation into flashcards.
The Nexus Pen team1 min read
How to use Donna on Nexus Pen for essay thesis and structure, grammar patterns, vocabulary, creative writing and reading analysis.
The Nexus Pen team1 min read
Learning a new language requires consistent practice, immediate feedback, and the ability to look up words and grammar rules without brea...
The Nexus Pen team1 min read
Where Nexus Pen can fit in a working day: meetings, routine reference questions, writing and research, with Donna answering out loud.
The Nexus Pen team1 min read
Effective test prep is about more than just re-reading notes, it requires active recall, targeted practice, and understanding where your ...
The Nexus Pen team1 min read
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