Hi you all,
I borrow this same thread so the info will stay in one common place.
I'm also gonna light up my dx strips with ULN2003. I was just wondering can I simply connect Arduinos pwm:s to ULN's pins 1...7?
I started to hesitate since I saw this schemahttp://amblone.com/guide
(scroll down a little bit)
In that example the transistors are feed thru 2200ohm resistors.
Are any resistors needed with the setting with Arduino, ULN2003 and dx LED strips?
And are those dx strips common anode or common cathode?
(I understood strips have internal current limiting resistors)