diff --git a/readme.MD b/readme.MD
index 705ff73..be19404 100644
--- a/readme.MD
+++ b/readme.MD
@@ -5,3 +5,4 @@ change log
 2024-06-19   Initial of Weight Scale
 2024-06-24   add timer upload of weight scale
 2024-06-28   before try low power
+2024-06-28   ----- start STS-WS-LP ------