Interval Flash with Wake Lock
Set interval, 3 rapid blinks with clock display, click to exit, wake lock to prevent sleep
14:30:45
15Mar2024
Friday
🖱️
Click anywhere on screen to stop sequence
🔒
Wake Lock prevents screen sleep (if supported)
⏰
Clock displays on black screen (time, date, weekday)
Note: Wake Lock API is supported in Chrome, Edge, and Opera on desktop and Android. May not work in all browsers.
Current Sequence
Next sequence in: 30s
How to use:
- Adjust the slider to set the interval between blink sequences (5-120 seconds, default 30s)
- Toggle the sound switch to enable/disable the beep sound with each blink
- Click "Start Sequence" to begin - screen turns black with clock display
- When screen is black: Time, date (ddMonYYYY), and weekday are displayed in large font
- At each interval: Screen flashes 3 times (white/black/white) in rapid succession
- Click anywhere on the screen during the sequence to stop immediately
- Wake Lock feature prevents screen sleep on supported browsers/devices
- Use "Stop" or "Reset" buttons or click on the screen to stop the sequence