Petoi Bittle Manual
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7 🔧 Final Assembly

One step away from the final victory. ⚙️
If the output shaft of your servo has a metal gear, use the M2x4 flathead screw to lock the legs/head.
If the output shaft of your servo has a plastic gear, use the M2x6 self-tapping screw (same as the one to lock the servos) to lock the legs/head.

7.1 Head

To lock in the head, use a screw to lock the servo shaft and the servo arm from the bottom side of the chassis.
To reinforce the neck connection, you can 3D print the following part.

7.2 Limbs(upper and lower legs)

Use the screws to lock all the limbs.

7.3 Wire shield

There’re two snaps on both sides of the wire shield. Their relative height is different.
Flatten the wire of the lower leg to remove any coils. Then snap the wire shield to the upper leg.
The shield's edge should be parallel to the surface of the upper leg.
You may need to recalibrate if more or less weight is put on Bittle or the center of mass has been changed.
The picture below shows the wrong installation configuration.

7.4 Body cover and tail

The 6-pin female socket is used for connecting the programmer and communication dongles. Carefully bend it forward in a smooth arc if you are not going to attach a Raspberry Pi.
Attach the tail to the pin on the cover.
Snap the cover from one side of the body. Organize the wires so that they don't get stuck between the cover and the body. Then push the cover down to the other side of the body. You should hear a clear snap sound.