add notes for some wheel measurements

diff --git a/wheel.scad b/wheel.scad
index 2ba290a5985de42f99fe0f43595b7421b0ad2bfe..131caf8d5af204b1f7fc47d891bddedb5054fe61 100644 (file)
--- a/wheel.scad
+++ b/wheel.scad
@@ -9,8 +9,8 @@ wheel_radius = 68/2;
 
 module encoder_shaft(){
   // measured with calipers, checked against the motor shaft
-  motor_shaft_big = 3.7;
-  motor_shaft_small = 4.8;
+  motor_shaft_big = 3.7; // radius, gets doubled in cylinder
+  motor_shaft_small = 4.8; // total length of box
   motor_shaft_length = wheel_depth * 3 / 4;
 
   intersection(){