Zaino School Planner
Put today's classes, school lunch, weather and tomorrow's bag checklist on one four-color screen.
Firmware + companion service
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Device firmware · NOTE4 · Monochrome
WQN · Wrong-Question-Notebook
An open-source learning system developed by a high-school student, connecting question capture, organization, FSRS review and learning records. Its dedicated NOTE4 firmware brings question review, vocabulary, tasks and voice AI to e-paper, syncing results back to a WQN server.
What it can do
An open-source learning system developed by a high-school student, connecting question capture, organization, FSRS review and learning records. Its dedicated NOTE4 firmware brings question review, vocabulary, tasks and voice AI to e-paper, syncing results back to a WQN server.
Capture and organize problems, preserving attempts, mistakes and corrections for continued review
FSRS schedules review; learners can inspect and correct AI annotations and retain control of their ratings
NOTE4 caches study content and state, with durable queues to retry synchronization of offline activity
Voice questions and StepFun realtime conversation, with authorized tools to find problems, save notes and manage tasks
Web, 38 MCP tools and NOTE4 share learning data; an OpenCode remote-agent interface can be configured
Install & use
Let AI help you install
Connect the device and give AI the detection results together with this firmware information.
1
Confirm the device and connect USB
USB chip information cannot distinguish monochrome from four-color screens. Confirm the model first.
Connect USB and detect the device
Read the chip and capacity first, so AI needs fewer follow-up questions.
Detection may restart the device into download mode. It does not flash firmware; you still need to confirm the display model.
Not detected yet. You can also copy the task first and ask AI to help connect.
2
Give the installation task to AI
Codex on your computer can install dependencies and run programs locally.
What AI will do next
Check compatibility → Prepare firmware and a full backup → Assist with local installation → Verify first run
After copying, start a new chat in Codex on your computer and paste the task.
See the task for AI
Only project information and the device details selected here are included. Network addresses, accounts and keys are configured locally during installation.
3
After installation, check this
The device displays the expected WQN interface and continues to work after repeated updates.
Ask AI to report the installation location, verification results and how to start again. Continue in the same conversation if something goes wrong.
Know the process? View manual steps and source
NOTE4 monochrome · ESP-IDF 5.5.4 · WQN account or self-hosted server · Wi-Fi · Separate AI service configuration
Prepare the WQN service
The submission states that wqn.helema.cn has closed registration because of limited resources; contact the developer for access or self-host Wrong-Question-Notebook. Follow its README with Node.js 24+, npm, Docker and Supabase CLI, configuring the database, authentication, storage and desired model services. Confirm your web service and account work before pairing hardware.
Back up and build NOTE4 firmware
Targets monochrome NOTE4 with zectrix-s3-epaper-4.2, ESP32-S3 and 16 MiB Flash, not NOTE4C. Preserve your own complete Flash backup and recovery path, then build and flash with ESP-IDF 5.5.4 following the firmware README. No GitHub Releases installer is currently available. Paths, COM ports and backup checksums in the docs describe the author’s environment, not yours.
Pair, synchronize and configure AI
For self-hosting, point WQN_API_BASE to your own /api/esp32, then configure Wi-Fi and pair the device. Check problem download, button-based review and result synchronization before enabling voice and MCP. Realtime voice requires the realtime proxy and provider configuration; remote agents require an OpenCode gateway. Provider keys remain server-side. Offline content does not mean offline AI.
Source and setup docs reviewed; full service and hardware not tested. Generating a task does not send it or perform installation.
Frequently asked questions
How does this differ from a local-push plugin?
WQN replaces the NOTE4 operating firmware and pairs with its own server for bidirectional synchronization over its device API. It is not an image-push plugin for the official firmware or a Zectrix Cloud Open API workflow. Web, MCP and hardware share learning records.
Are all 38 MCP tools available through device voice?
No. The current MCP registry covers 38 tools, while device voice exposes a separately defined authorized subset. Availability also depends on server settings and user permissions. Questions, images, audio and learning records processed by models pass through the configured WQN and relevant AI services.
Who is the project currently suited to?
Suited to students and developers willing to self-host, compile firmware and contribute feedback. The submission describes a high-school-student developer working with student testers. Development remains active, with some study flows and power-management features evolving. We have not evaluated educational outcomes; AI answers are not a correctness guarantee.
What do the preview and review cover?
The 400×300 preview was rendered on a computer using the current firmware’s original drawing functions and bundled fonts. Problems, time, progress and battery values are samples, not a hardware capture. We reviewed both repositories, deployment docs and relevant FSRS, MCP, voice and remote-agent implementations. We have not deployed the full service, built/flashed a device or tested voice. Both repositories use GPL-3.0; the Web project builds on mrmagic2020/Wrong-Question-Notebook.
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