From 2bc7180850c23287135926f33ff4f0f29c0d2935 Mon Sep 17 00:00:00 2001 From: isthatme Date: Sun, 8 Oct 2017 11:04:17 -0600 Subject: [PATCH] Added some more information to the README for the 16 channel board. --- .../README.md | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) rename {3Channel-LED-Driver-NoSensing => 16Channel-LED-Driver}/README.md (53%) diff --git a/3Channel-LED-Driver-NoSensing/README.md b/16Channel-LED-Driver/README.md similarity index 53% rename from 3Channel-LED-Driver-NoSensing/README.md rename to 16Channel-LED-Driver/README.md index 16d4944..8c7e9dc 100644 --- a/3Channel-LED-Driver-NoSensing/README.md +++ b/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.