When Arduino first hit the maker scene, the world of embedded electronics was largely unconnected and offline. But as the IoT, home automation, and smart technology advanced, Arduino kept up. Today, there are a variety of Arduino development boards that offer built-in networking capability and you can use the Arduino Cloud to take advantage of them. To demonstrate that, Doug Domke built this button-free alarm clock.
User interface design is a complex field that has to balance usability, simplicity, and practicality. Take a look at the radio alarm clocks of the 1990s to see how bad user interfaces can make device interaction frustrating. Domke’s alarm clock goes in the complete opposite direction and omits buttons altogether. It lets the user “set it and forget it” through a simple Arduino Cloud dashboard. The time automatically updates based on the configured time zone and daylight savings settings.
This requires very little hardware. Power comes in through USB to an Arduino Nano ESP32 board, with a connected piezo buzzer module and four-digit seven-segment display. Those fit inside a basic 3D-printed enclosure. All the magic happens through the Arduino Cloud and Domke explains how to set up an Arduino Cloud account, create a dashboard, and connect the Nano ESP32 to that dashboard.
If you want a dedicated alarm clock, this is a quick and easy project that will help you get acquainted with the Arduino Cloud for future IoT projects.
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