From fc536da28b46d3a3868cde15d23234194f5d65f7 Mon Sep 17 00:00:00 2001
From: mrfaptastic <12006953+mrfaptastic@users.noreply.github.com>
Date: Mon, 24 Aug 2020 23:51:33 +0100
Subject: [PATCH] Update README.md

---
 README.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 5707d97..561805e 100644
--- a/README.md
+++ b/README.md
@@ -119,10 +119,12 @@ void setup() {
 
 ```
 
-The value to pass 'setPanelBrightness' is the RGB Matrix's pixel width or less. i.e. Approx. 50 or lower. Values greater than 60 can cause ghosting it seems on some panels.
+The value to pass 'setPanelBrightness' is the RGB Matrix's pixel width or less. i.e. Approx. 50 or lower (for a 64 pixel wide panel). Values greater than 60 can cause ghosting it seems.
 
 HOWEVER, by default the library uses a brightness level of '16' so there's really no need to call .setPanelBrightness, unless you specifically want a super bright display.
 
+Summary: setPanelBrightness(xx) value can be any number from 0 to MATRIX_WIDTH-1. 
+
 ![It's better in real life](image.jpg)
 
 ## Inspiration