add leg assemble instruction

mechanism/LEG.md

@@ -0,0 +1,54 @@
+# Leg Assemble Instruction
+
+## Preparation
+
+For one leg, you will need 3 MG92B servo and below printed parts
+
+Filename | Thumbnail | Required |
+-------- | --------- | -------- |
+thigh_top | ![thigh_top](files/thigh_top.jpg) | 1 |
+thigh_bottom | ![thigh_bottom](files/thigh_bottom.jpg) | 1 |
+joint_cross | ![joint_cross](files/joint_cross.jpg) | 1 |
+joint_top | ![joint_top](files/joint_top.jpg) | 2 |
+joint_bottom | ![joint_bottom](files/joint_bottom.jpg) | 2 |
+leg_top | ![leg_top](files/leg_top.jpg) | 1 |
+let_bottom | ![leg_bottom](files/leg_bottom.jpg) | 1 |
+foot_top | ![foot_top](files/foot_top.jpg) | 1 |
+foot_bottom | ![foot_bottom](files/foot_bottom.jpg) | 1 |
+foot_ground | ![foot_ground](files/foot_ground.jpg) | 1 |
+foot_tip | ![foot_tip](files/foot_tip.jpg) | 1 |
+
+## Step 1
+
+![LegAssemble1](files/mech_leg_1.jpg)
+
+Combine `thigh_top`, `MG92B` and `thigh_bottom`, use M2x30mm screw and nut to secure them together.
+
+## Step 2
+
+![LegAssemble2](files/mech_leg_2.jpg)
+
+Grab one `joint_cross`, `joint_top` and `joint_bottom` and combine them
+
+## Step 3
+
+![LegAssemble3](files/mech_leg_3.jpg)
+
+First put 2 x `MG92B`, `leg_top` and `leg_bottom` together with M2x30mm screw and nut.
+Then attach `joint_top` and `joint_bottom` altogether
+
+## Step 4
+
+![LegAssemble4](files/mech_leg_4.jpg)
+
+Grab `foot_top`, `foot_bottom` and `foot_ground` (and `foot_top`) and assemble them.
+
+## Finish!
+
+![LegAssemble5](files/mech_leg_5.jpg)
+
+Great, you got 1 leg done, 5 more to go :)
+
+
+
+

mechanism/README.md

@@ -8,7 +8,11 @@
 
 ## Leg Assemble
 
-TBD
+![LegAssemble](files/mech_leg_exploded.jpg)
+
+Please check [Leg Assemble](LEG.md) for more detail instructions
+
+> Note. Total 6 Legs are required.
 
 ## Body Assemble