GM4JJJ 4 Digit Arduino LED GPS Clock Blog
Arduino Uno LED Digital Clock using GPS for Time Sync
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The LED GPS Clock project now has no buttons or switches. I removed the only button which was used to put the clock into the LED multiplex demo mode where it slows down the refresh rate of the LED segments so you can see how it works. Instead the IR remote control is now used for controlling this. The repeat button switches on the demo mode, which gradually speeds up to normal speed, or you can cancel it immediately by pressing the Power On/Off button on the remote.
The Mode button on the remote still toggles between Local Time Display and UTC Time Display.
Handy thing this remote control.