I want to put 4 leds in a row and connect them to parallel port(Thats easy). The problem is i want also to control the brightness of the leds. I could easily do that using a r-2r dac, but the parallel port only has 8 pins(leaving 2 for each), at least i want 4 brightness settings for each(using 4 pins for each).
I am thinking in a way to send the data 2 time like this
10110100
01101001
so for the first led it wold be 1011, the second 0100, the third 0110 and the fourth 1001.
Can someone help me with that
I am thinking in a way to send the data 2 time like this
10110100
01101001
so for the first led it wold be 1011, the second 0100, the third 0110 and the fourth 1001.
Can someone help me with that