4. Both Front and Back Legs

Compare Front and Back Leg Assemblies

In this step, compare the front leg assembly and back leg assembly before fixing them to the Robot Dog body. This check is important because both leg mechanisms must be aligned properly for smooth walking.

Parts Required

Part	Quantity	Description
Front leg assembly	1 set	Completed in the front leg assembly step
Back leg assembly	1 set	Completed in the back leg assembly step

Assembly Check

1. Place Both Leg Assemblies Side by Side

Place the front leg assembly and back leg assembly on a flat surface.

2. Check the Leg Direction

Make sure both leg assemblies are facing the correct direction.

The legs should be mounted in such a way that they can move freely when the servo rotates. If one leg assembly is reversed, the Robot Dog may not walk correctly.

3. Check the Screw and Nut Position

Inspect the screws and nuts on both assemblies.

Make sure:

• Screws pass through the cardboard leg and ice cream stick properly.
• Nuts are fixed securely.
• No screw is loose.
• Screws are not touching the servo body.
• The cardboard legs are not bent or damaged.

4. Compare the Front and Back Legs

Both assemblies should look balanced.

Check the following:

Check Point	What to Verify
Leg alignment	Both legs in each assembly should be parallel.
Servo position	Servo should be firmly attached to the horn and stick assembly.
Height	Both legs in the same assembly should be at the same level.
Wire position	Servo wires should not get pulled or trapped.

5. Test Movement Manually

The legs should move smoothly without rubbing against the servo body or the ice cream stick.

6. Correct Any Misalignment

If the legs are not straight:

1. Loosen the nuts slightly.
2. Align the legs again.
3. Tighten the nuts gently.
4. Check movement again.

Do not overtighten the nuts, as this may damage the cardboard or restrict movement.

Compare Both Legs Video

Common Issues and Fixes

Issue	Possible Reason	Solution
One leg is loose	Nut is not tightened properly	Tighten the nut gently.
Legs are not parallel	Leg was fixed at an angle	Loosen and realign the leg.
Servo horn does not move freely	Screw is touching the servo body	Adjust the screw position.
Assembly tilts to one side	Legs are mounted unevenly	Recheck alignment and height.
Servo wire is twisted	Wire was wrapped during assembly	Free the wire before mounting.

Completed Step

Both front and back leg assemblies are now ready.

In the next step, we will mount these leg assemblies on the main body of the Robot Dog.