Cronus

Cronus is a minimalistic digital clock built on top of the ESP32 MCU with the following features in mind.

• Show the current time, date, and weather conditions.
• Simple, with a bright display.
• Brightness auto-adjustment depending on the ambient light level.
• No buttons.
• Automatic Over-the-Air firmware upgrades.
• No disgusting bloody Arduino.

See more

How to make it

See the Wiki.

Contributing

Clone the repo:

git clone --recurse-submodules https://github.com/ashep/cronus.git

Or update an already cloned one to the latest version:

git pull
git submodule update --recursive --remote

Changelog

0.0.5 (2026-01-11)

• Added air raid alerts widget.
• Added a "busy" icon upon OTA.
• Performance improvements and little optimizations.

0.0.4 (2025-09-30)

• Added widget color options for colorful screens.
• Added night mode options for colorful screens.

0.0.3 (2025-08-31)

• Added night mode for colorful screens.
• Added custom location option.
• Fixed Wi-Fi reconnection at startup.

0.0.2 (2025-08-11)

• New Bluetooth configuration interface added.
• Weather icons added.

0.0.1 (2025-06-21)

First stable release.

Authors

• Oleksandr Shepetko.