diff --git a/README.md b/README.md
index 0e76c55..9377b04 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,11 @@
 - [BN-220 GPS ](https://www.amazon.com/Navigation-Raspberry-Betaflight-Geekstory-Shipping/dp/B07PRDY6DS?th=1)
 - [LSM303AGR Accelerometer + Compass](https://learn.adafruit.com/lsm303-accelerometer-slash-compass-breakout/overview)
 
+**NOTE:**
+
+The logic level and voltage supply for the LCD display need to be the same. 
+It's listed as needing to be 3.3v in the documentation.
+
 ## Configuration
 
 The project can be configured to use a variety of hardware or differnt 
@@ -91,6 +96,7 @@ tree -L 1
 
 6 directories, 7 files
 ```
+
 ## Project Dependencies
 
 - RadioHead RFM9x Library