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USB firmware
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Device firmware · NOTE4 · Monochrome
PaperTalk-ESP32
Turn NOTE4 into a family voice-message terminal. A Feishu bot receives voice messages, unread messages appear as heart envelopes, and device buttons play or record replies. A companion Python server must stay running.
What it can do
Turn NOTE4 into a family voice-message terminal. A Feishu bot receives voice messages, unread messages appear as heart envelopes, and device buttons play or record replies. A companion Python server must stay running.
Heart envelopes represent unread voice messages, with adaptive layouts for 1–15 messages
Short press to listen; hold about 300ms to record and release to send to Feishu
Blank standby screen with a battery icon; side buttons adjust volume
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 shows the expected PaperTalk-ESP32 screen and continues to update normally.
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
Monochrome NOTE4 · ESP-IDF 5.5+ · Python 3.10+ server · Feishu custom enterprise bot · Wi-Fi
Prepare the bot and server
Create a Feishu custom enterprise app, configure bot permissions and long-connection events. Prepare Python 3.10+, FFmpeg and source dependencies, and provide your own FEISHU_APP_ID and FEISHU_APP_SECRET environment variables. The referenced requirements.txt is missing, so the README is not a complete one-command installation path.
Check configuration and build firmware
Back up the full Flash of your device first. The component manifest requires ESP-IDF >=5.5, despite the README badge saying 5.3+. Replace sample network, server and port settings with your own, confirm server reachability, then build and flash over USB. NOTE4C is unsupported.
Bind a family member and verify audio
Restrict bot visibility to trusted family members. The server assigns the latest sender as the reply recipient; it is not fixed multi-user account isolation. Verify envelopes, playback, recorded replies and volume. Keep the device-facing HTTP/WebSocket service off untrusted networks.
Source and preview reviewed · Firmware and server untested. Generating a task does not send it or install anything.
Frequently asked questions
Is flashing the firmware enough?
No. You also need a Feishu bot, a continuously running Python server and device-to-server connectivity. Feishu’s long connection removes the public event-callback requirement, not the network path from the device to your server.
What has this site verified?
Source, component requirements and author previews were reviewed. Firmware build, flashing, Feishu messaging and power consumption were not independently tested. The referenced requirements.txt and systemd example are missing; deployment needs dependency and service configuration work.
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