Overview

A Wi-Fi-connected digital clock for the Elecrow CrowPanel ESP32 HMI 2.8-inch (240 × 320, ILI9341). The CHRONO interface displays Indian Standard Time (IST), UK local time including daylight-saving changes, the date, connection status, and daily progress.

Features

• Synchronizes UTC time from public NTP servers.
• Displays IST and UK time, including UK daylight-saving rules.
• Reconnects to Wi-Fi with increasing backoff and continues using cached system time during temporary network outages.
• Configurable 12/24-hour clock and seconds display.

Hardware

• Elecrow CrowPanel ESP32 HMI, 2.8-inch, 240 × 320 ILI9341 display
• USB data cable and 2.4 GHz Wi-Fi

Build and upload

1. Install VS Code and the PlatformIO IDE extension.
2. Open the platformio directory (the folder containing platformio.ini).
3. Copy include/secrets.example.h to include/secrets.h and set your Wi-Fi credentials. Keep secrets.h private.
4. Connect the display by USB; allow PlatformIO to install dependencies, then Build and Upload.
5. Use the serial monitor at 115200 baud to check Wi-Fi and NTP status.

Source code and license

GitHub repository: https://github.com/papercodeIN/Elecrow. The project is shared under the MIT License.