diff --git a/README.md b/README.md
index aa50900..fa2fb38 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,8 @@
 
 ![image](/documentation/images/drawing.png)
 
+[Download STEP file](/documentation/design/i2cMotor.step)
+
 ---
 
 ### Features