diff --git a/Hydroponicsmeasure.ino b/Hydroponicsmeasure.ino
index ff8dbce..fbed545 100644
--- a/Hydroponicsmeasure.ino
+++ b/Hydroponicsmeasure.ino
@@ -26,6 +26,7 @@
  * 
  * As a reminder to myself, I used pin PA6 on the OrangePiZero that I'm hosting this on for reset (active low)
  * on the Arduino Pro Mini, there is also a 3v3/5v potential divider on the TX from the Arduino.
+ * The Orange Pi Zero UART being used is UART1
  *
  * Licensed under GPL V3. Read the license here:
  * https://www.gnu.org/licenses/gpl-3.0.en.html