From: Yin Shanyang <yang@swarm.is>
Date: Mon, 24 Oct 2016 07:36:24 +0000 (+0800)
Subject: added notes on using Arduino Pro Micro 3.3V with Let’s Split
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=7550abbb7ff542dccd983c02254c9cbde2e2a3e2;p=qmk_firmware.git

added notes on using Arduino Pro Micro 3.3V with Let’s Split
---

diff --git a/keyboards/lets_split/readme.md b/keyboards/lets_split/readme.md
index 73fdb0f78..6e296737a 100644
--- a/keyboards/lets_split/readme.md
+++ b/keyboards/lets_split/readme.md
@@ -100,3 +100,16 @@ half to a computer by USB the keyboard will use QWERTY and Colemak when the
 right half is connected.
 
 
+Notes on Using Pro Micro 3.3V
+-----------------------------
+
+Do update the `F_CPU` parameter in `rules.mk` to `8000000` which reflects
+the frequency on the 3.3V board.
+
+Also, if the slave board is producing weird characters in certain columns,
+update the following line in `matrix.c` to the following:
+
+```
+// _delay_us(30);  // without this wait read unstable value.
+_delay_us(300);  // without this wait read unstable value.
+```