diff --git a/README.md b/README.md
index 2065c34..a392fa3 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,7 @@ JP1
  2 ┣━ Green LED (GPIO18)
    ┣━ White LED (GPIO23)
    ┣━ USB power probe (GPIO33)
+   ┣━ ADC  ━ Battery probe (GPIO32) 
 ━━━┛
 
 ```