Click “Ready?” to start the timer. When the timer ends, click “0:00” to reset.
Default timer is 10 minutes long with a caution color at 3 minutes and warning color at 1 minute. To customize the time, add “#” with time,warning (for example, one minute with warning at 30 sec: lightning-time/index.html#60,30).
“countdown-timer” is a basic Jekyll template designed to create a customizable timer with a buzzer on GitHub Pages. It was originally created for UI GIS Day 2017 lightning talks. Inspired by apg/timer and mithro/lightningtimer projects. Get the countdown-timer source code.