Added some more information to the README for the 16 channel board.

16Channel-LED-Driver/README.md

@@ -8,6 +8,24 @@ This is a 16 Channel LED Driver board. Each channel has current limiting (set by
 
 I used two PCA9634s and four LM324s just to simplify the routing because initially I figured a two layer board would be simpler to design for personally.
 
+## Revisions ##
+
+### Revision A ###
+
+This was the first revision of the board, had a bunch of issues to fix, a lot of them dumb.
+
+### Revision B ###
+
+The main issue with this revision was lack of resistors in front of the BJTs, so it would pull too much current and overheat the PCA9634s.
+
+### Revision C ###
+
+An issue with the opamp stuff, if you had too high a value for the potentiometre, it would overdrive the BJTs and wreck the opamp.
+
+### Revision D ###
+
+Probably the last revision, unless I decide to completely redo it to make it nicer or put it on a 4 layer board to reduce the size.
+
 ## Errata ##
 
 - Consider Rev A and Rev B unusable versions of this board.