From 632772d4b7eef0bc698ce190159d0cc78523ab45 Mon Sep 17 00:00:00 2001
From: Markus Koch <markus@notsyncing.net>
Date: Sat, 17 Jul 2021 23:07:20 +0200
Subject: [PATCH] Document WS2812B level shifter erratum

---
 README.MD | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.MD b/README.MD
index f3e8b89..7cab3c2 100644
--- a/README.MD
+++ b/README.MD
@@ -12,3 +12,7 @@ Board to run [colorchord2](https://github.com/cnlohr/colorchord) on a string of
 	* Workaround: Flip 180 degrees and solder shifted onto the right pads, then use magnet wire to connect the remaining two pads.
 * Serial boot loader non-functional (uses incompatible UART I/Os).
 	* Workaround: Program via JTAG / SWD.
+* Missing level shifters for WS2812B LEDs (RX)
+	* Workaround: Don't use WS2812B RX inputs on the board
+* Missing level shifters for WS2812B LEDs (TX)
+	* Workaround: The first LED will kinda sorta do the level shifting for you, but sometimes fail to display correctly. Just ignore its erratic blinking.