> Oh, yeah. It would be *almost* enough to make you wish for > a wave soldering machine The thing about ultra-bright LEDs is that with their narrow beam angle, get one out of place and it sticks out like the proverbial dog's wassnames And consider this Wouter - you would need 70A of DC to display worst-case "88:88", assuming 7 x 4 x 120 LEDs pulling 20mA each. A 25A supply for each digit ? Not trying to put you off (especially as LEDs are "in" these days), but I got a surprise when I did the calcs for my request -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu