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Armature

Make sure yiou are in modeling workspace

Add 8 loop cuts to all the arms and legs

This is where your bends will happen

Switch to OBJECT MODE

Select everything and join them all by pressing Control + J

Now we will add the Armature

Select Wireframe View

Next we will ADD Armature

The armature is sililar to the joints and bones

Switch from Object Mode to Edit Mode

Move your first piece to the center and scale it do that the top joint at the arm height

Select the top joint and press E to extrude the next pieceto the shoulder

Extrude that joint to the elbow and continue until all the bot is done

Once you have this done, switch back to object mode

Deselect all the armature

Select the object first

then select the armature by hitting control + shift

Press Control + P to make it a Parent

Set Parent to Automatic Weights

Deselect and select just the armature

Switch to Pose Mode

Press R to rotate and pose

If it does not work, try these fixes

1. Remove "Double" Vertices

This is the most common culprit. If you have two vertices occupying the exact same spot, the heat weighting math breaks.

• Select your mesh and enter Edit Mode (Tab).

• Select everything (A).

• Press M and select Merge by Distance.

• Check the bottom of the screen to see how many vertices were removed. Even removing 1 or 2 can fix the error.

2. Fix Flipped Normals

If some of your mesh faces are pointing "inside out," Blender won't know how to calculate the heat from the bones.

• In Edit Mode, select all (A).

• Press Alt + N and select Recalculate Outside.

• Tip: You can check for flipped normals by enabling Face Orientation in the Overlays menu (top right). Blue is good; Red means the faces are inside out.

3. Clear Scale and Rotation

If your mesh or armature has been scaled or rotated in Object Mode, their "internal math" might not match.

• Go to Object Mode.

• Select both the mesh and the armature.

• Press Ctrl + A and select All Transforms. This resets the scale to 1.0 and rotations to 0.

4. Check for "Manifold" Geometry

Blender prefers "watertight" meshes for automatic weighting. Issues like holes in the mesh or internal faces (faces inside the body) can cause failures.

• Remove Internal Faces: In Edit Mode, go to Select -> Select All by Trait -> Interior Faces, then delete them.

Scale it up: Sometimes, if a model is very small, the math fails. Try scaling both the armature and mesh up by 10 (S, 10, Enter), applying the scale (Ctrl + A), parenting, and then scaling back down.

Animation

Pull up your timeline

With your object selected, hover over it and press K (for Keyframe) at the first frame

Select Location, Rotation and Scale

Slide your scrubber to the 40th frame on your timeline/dopesheet

This is where we will be ending our location, rotation and scale

Move your cube to a different location (you can use the G Key to grab)

Shrink your cube to a different size (you can use the S Key to scale)

Rotate your cube (you can use the R Key to rotate)

Add another Keyframe at the 40th frame

Click Autokeyframing

Move your scrubber to 60 

Repeat the process in a different L,R,S

Notice that it adds the keyframe for you

At the 40 mark, go to your keyframe 

Hold the G Key

Move your keyframe to the 10th frame and move your keyframe on the 60th frame to 20

It completes the L,R,S in the time you set the keyframe to finish, making it faster

Scrub over to the 30th frame and add a keyframe without adding any L,R,S

This will stop all movement during this time

Click on the shading workspace

Click ADD>Texture>Checker Texture

Choose two colors for your pattern

Connect the color node to base color

Add a timeline into your workspace

Get between your two work areas (you will have a double arrow

Right Click and select Horizontal Split

Switch the editor to timeline 

You will need to add a keyframe for your Texture

Hover over your texture node and press I to insert a Keyframe

You should have a Material in your Summary

Expand it and you should see Shader Nodetree with a keyframe

Add a keyframe by hovering over the texture node and pressing I key

Scrub over to frame 10

Change the color 1

test

repeat with frame 20, 30 and 40