Hello all, I am new here but I've been using LED circuits in DIY projects for a while now. I have been trying to find a schematic for a "growing and shrinking" sequence circuit. The closest thing I found was one posted on this forum (link below):
http://forum.allaboutcircuits.com/c...uits.com/picture.php?albumid=45&pictureid=839
I got this circuit to work as intended and I'm (unsuccessfully) trying to modify it. The circuit I am trying to make would have every LED before it stay on so the whole sequence "grows" and "shrinks".
I think the sequence chart in the bottom left corner of the above image is a good way to visually see what I'm talking about. This is the sequence I am trying to make:
0 O X X X X X
1 O O X X X X
2 O O O X X X
3 O O O O X X
4 O O O O O X
5 O O O O O O
6 O O O O O X
7 O O O O X X
8 O O O X X X
9 O O X X X X
(O's representing ON and X's representing OFF)
As you can see, instead of one LED bouncing back and forth, the whole sequence grows and then shrinks back down so that it can start at one again.
I apologize in advance if this type of thing has already been answered on this forum. I couldn't find anything to help me complete this sequence. I've tried rewiring things, adding diodes, different transistor setups - all to no avail. Any help would be greatly appreciated.
Also, it doesn't necessarily need to be a six-sequence circuit, it could be a few less if that makes it easier. Thanks again!
http://forum.allaboutcircuits.com/c...uits.com/picture.php?albumid=45&pictureid=839
I got this circuit to work as intended and I'm (unsuccessfully) trying to modify it. The circuit I am trying to make would have every LED before it stay on so the whole sequence "grows" and "shrinks".
I think the sequence chart in the bottom left corner of the above image is a good way to visually see what I'm talking about. This is the sequence I am trying to make:
0 O X X X X X
1 O O X X X X
2 O O O X X X
3 O O O O X X
4 O O O O O X
5 O O O O O O
6 O O O O O X
7 O O O O X X
8 O O O X X X
9 O O X X X X
(O's representing ON and X's representing OFF)
As you can see, instead of one LED bouncing back and forth, the whole sequence grows and then shrinks back down so that it can start at one again.
I apologize in advance if this type of thing has already been answered on this forum. I couldn't find anything to help me complete this sequence. I've tried rewiring things, adding diodes, different transistor setups - all to no avail. Any help would be greatly appreciated.
Also, it doesn't necessarily need to be a six-sequence circuit, it could be a few less if that makes it easier. Thanks again!