NOTE4C Four-Color Gallery Reference
Turn NOTE4C into a four-color photo gallery with uploads through a phone hotspot or home LAN.
USB firmware
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Device firmware · NOTE4 · Monochrome
NOTE4 16-Level Grayscale Demo
Explore full refresh, partial refresh and sixteen grayscale levels on monochrome NOTE4 as a display foundation for your own e-paper projects.
What it can do
Explore full refresh, partial refresh and sixteen grayscale levels on monochrome NOTE4 as a display foundation for your own e-paper projects.
Full and partial refresh demos
Sixteen-level grayscale display example
Official development reference source
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 NOTE4 16-Level Grayscale Demo screen 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
Monochrome NOTE4 Devkit · ESP-IDF development environment
Prepare the development environment
This display-driver demo targets monochrome NOTE4 Devkit. Prepare ESP-IDF and a USB data cable, and save a complete Flash backup first.
Build firmware for the target board
Obtain the repository source and select ESP32-S3 and the matching monochrome panel using the development guide. This site has not verified an installable release package.
Observe the display
Install your compiled demo firmware over USB and observe full refresh, partial refresh and grayscale. Then modify the example to add your own display.
Information organized · Release version and installation await review. Generating a task does not send it or run an installation automatically.
Frequently asked questions
Is this complete consumer firmware?
It is a development reference demo. The installed experience follows the demo program and is not the full consumer NOTE4 feature set.
Can it be installed on NOTE4C?
No. NOTE4C's four-color panel requires different display settings. Monochrome firmware images cannot be used.
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