Web-based Shotclock
Simple shotclock using SegmentDisplay for the LCD style display.
Uses a canvas based segment display from http://www.3quarks.com/en/SegmentDisplay/
By default the number of seconds for the countdown is 25. The number of seconds can be supplied after the # in the URL, i.e. /index.htm#30 will make the shotclock countdown from 30 seconds.
The page now uses UpUp (https://www.talater.com/upup/) to provide a compatible PWA service worker allowing the shotclock to be used offline.