This App uses a component to setup a 7-segment clock digit. The component accepts 3 custom properties: the digit to be displayed, the foreground color for the active segments, and the background color for the inactive segments.
The application itself uses 4 timer controls to manage the 3 digits plus the blinking dots.
Full write up can be found in my series of articles:
#PowerApps: Using Components to create a Digital Clock - Part 1
#PowerApps: Using Components to create a Digital Clock - Part 2
