Leo,
It has been tested for 2 hours. Looks good! The brightness is good and no components is hot. 
Btw, I use 220 + 15 ohm for segment and 1k + 15 ohm for DP, as:
SEGMENT : (12V - (5*2V))/(220 + 15) = ~9mA
DP: (12V - 2V)/0.009 = 1111 ohm = 1k ohm
Here I attach the photo. I cover it with dark glass as they are too bright for my eyes.
I hope there is no problem when I chain all six 7-segments LEDs. Does it mean I have to use at least 2A adaptor just for six pcs of 7-segments LEDs? 36 x 9mA x 6 pcs = 1.9A ?
I owe you one, Leo. ;D
Bronson
