How would I rig an old analog clock to light up LEDs to show the time? Answered
I was thinking of using the 10mm ultra-brights for the hour mark and the standard 5mm for the minutes. Should I connect them all to a common ground and use the hands as the "hots?" Should I use a plate-type contact; cause I feel that the post-type would interfere with the sweep of the hands. What kind of batteries should I use?