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Render of the SOS button: an orange press button marked Rapid Labs on a grey and orange cylindrical casing.

Wi-Fi SOS Button

A battery-powered panic button that sends an alert to a guardian’s phone over Wi-Fi. We designed the modular casing, the electronics and the firmware, and printed the first working prototype.

Project stage
Functional prototype
Work type
Portfolio study

One press, one alert

  • Render of the casing from below, with its mounting holes and charging port.
  • See-through render of the button, with the board, battery and wiring inside.

Press the button and its WEMOS D1 Mini (ESP8266) sends an alert message over Wi-Fi to the phones of the people looking after the user.

Made to last on a battery

  • Render of the electronics stack: the D1 Mini, the battery board and a red indicator light.
  • See-through render of the stacked casing around the electronics.

Between presses the board sleeps (deep sleep) to stretch the battery, and a battery management system lets the button charge and run at the same time.

A modular casing

  • Exploded render of every layer of the casing, with the board, battery and button.
  • Section render of the assembled button.

The casing stacks in layers around the electronics, so it’s easy to open and change. We 3D printed the parts for the first functional prototype.

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