1.28" Knob Screen LCD Test

Preparation

• 1 × OpenNextion ESP32-S3 1.28" smart display
• 1 × USB data cable
• 1 × Windows/Mac computer

Before starting, ensure the USB cable supports data transfer and maintain a stable connection between the board and your computer.

Flashing the Firmware

1. Click Flash Online at the top of the page.
2. Select the OpenNextion device model you are using.
3. Choose the corresponding serial port when prompted in the browser.
4. Wait for erasing, writing, and verification to complete. Do not unplug the USB cable during this process.

After successful flashing, the board will automatically restart.

Operating Instructions

Test the screen display performance and the key button functionality.