Head Assembly
In this first section, you'll learn how to assemble the head of the robot, mount the Main PCB and wire up all the components.
1 - Mounting the Visor Components
The first step in assembling the head is to mount the components that will be placed inside the Visor, on the Visor Plate.
Take the Visor Plate and place it in front of you with the flat side down.
The OLED Screen
The key component of the head is the OLED screen, which will be used to display the robot's eyes and menus.
Place the OLED screen in the center of the Visor Plate, with the wire going through the plate towards the back of the head.
The Camera
Take the small Camera Mount part and insert the Camera into it, with the lens facing outwards and the flexible cable going up.
Then, insert the Camera Mount into the bottom-center hole of the Visor Plate by first inserting the camera's flexible cable through the hole, and then pushing the mount until it's flush with the plate.
Lens protection
To avoid scratching the camera lens during assembly, please keep the protective film on the lens until the robot is fully assembled.
The Microphone
Take the Microphone board and place it in the bottom-left slot of the Visor Plate, with the microphone facing outwards and the cable going through the plate towards the back of the head.
The Laser Sensor
Place the Laser Sensor in the bottom-right slot of the Visor Plate, with the sensor facing outwards and the cable going through the plate towards the back of the head.
The Touch Sensors
Finally, place the 2 Touch Sensors in the top-left and top-right slots of the Visor Plate, next to the screen.
Make sure the cables are going through the plate towards the back of the head.
2 - Screwing the Visor Plate
Now that all the components are placed on the Visor Plate, it's time to attach it to the Visor.
Slide the Visor Plate into the Visor from the top, making sure the components fit into their respective cutouts.
Once the plate is flush with the visor, flip the visor upside down and use 2x M2.5x4 screws to secure the Visor Plate to the Visor through the two holes on the sides of the plate.
3 - The Main PCB
Now that the visor components are mounted, it's time to wire them up to the Main PCB and mount it on the head.
Wiring the Visor Components
Each visor component has a dedicated connector on the front of the Main PCB. Connect the components to their respective connectors using the provided cables:
| Component | Cable type | Icon |
|---|---|---|
| OLED Screen | JST-PH 4-Pin |  |
| Touch Sensors | JST-PH 3-Pin |  |
| Microphone | JST-PH 5-Pin |  |
| Laser Sensor | JST-PH 4-Pin |  |
Wiring up the Camera
The camera is connected to the Main PCB using a FPC cable that plugs into the Camera Connector at the bottom of the PCB.
To connect the camera, first lift the black locking mechanism of the Camera Connector using a small flathead screwdriver.
Then, insert the camera's FPC cable with the metal contacts facing downwards and towards the PCB.
Finally, push the locking mechanism back down to secure the cable in place.
Plugging the Ear Motors
It is easier to plug the ear motors into the Main PCB before screwing it in place, so take the 2 Ear Motors.
Each ear motor has a Dupont 3-Pin connector that plugs into the 2 connectors on the top-right of the Main PCB, next to the USB-C port.
Insert the left ear motor's connector into the left slot, and the right ear motor's connector into the right slot.
Caution
The connectors don't have any keying mechanism, but they should only be inserted in one orientation.
Please make sure to connect each connector with the RED wire at the top (with the "+" icon on the PCB).
Mounting the Main PCB
Now that all the components are wired up to the Main PCB, it's time to mount it on the head.
Place the Main PCB at the center of the Visor part, with the USB-C port facing upwards.
Use 4x M2.5x4 screws to secure the Main PCB to the Visor through the holes on the corners of the PCB.
4 - Backplate, Motors, Speakers & Wiring
The main part of the head is now complete! But before moving on to the next step, we still need to put the ears motors and the speaker in place, and fix the head to the torso!
The backplate
Take the Head backplate and place it on the front of the torso. This backplate will serve as the base for the head, and will also hold the ear motors in place.
Make sure to align the screw holes on the backplate with the ones on the torso, and screw the backplate in place using 4x M2.5x6 screws.
The Ear Motors
Now that the backplate is in place, take the 2 Ear Motors that you plugged into the Main PCB earlier, and place them on each side of the backplate, with the motor shaft facing upwards.
Use the included screws to secure each ear motor to the backplate. The screws should go through the holes on the motor and into the holes on the backplate.
The Speaker
Take the Speaker and place it in the center of the backplate, between the two ear motors, with the cable facing downwards.
Remove the protective film on the speaker to reveal the adhesive, and stick the speaker to the backplate.
Connect the cable of the speaker to the Main PCB on the connector with the 
Wiring the Head to the Torso
Now that the head is fully assembled, it's time add the necessary cables to connect the head to the torso before closing it.
The head connects to the torso through a bundle of cables that go through the hole in the backplate and into the torso. Here's the list of cable to prepare and their respective connectors on the Main PCB:
| Cable type | Main PCB Connector Icon | Purpose |
|---|---|---|
JST-PH 2-Pin - 20cm |  | Power supply to the head, coming from the Plug PCB. |
JST-PH 4-Pin - 20cm |  | Signal wire for the Plug PCB and the Power PCB. |
JST-PH 4-Pin - 10cm |  | Signal wire towards the Motor Driver on the torso to control the motors |
JST-PH 2-Pin - 10cm |  | Signal wire from the Motor Driver to the ear motors. |
JST-PH 4-Pin - 20cm |  | Signal wire towards the IMU sensor on the torso for motion data. |
JST-PH 7-Pin - 10cm |  | Signal wire towards the Analog Reader on the torso for the sensors data. |
For each cable, plug one end into the respective connector on the Main PCB as indicated in the table above, and place the other end of the cable into the torso through the hole in the backplate.
5 - Final Check
Just before closing the torso, make sure to double check that all the cables are properly plugged in (all the way in, and on the right connectors!), and that there are no loose screws or components.
If everything looks good, we can finally close the head!
5 - Closing the head
To finish the head assembly, you'll need the Head Bottom Cover part and the Head Top Cover part.
Bottom Cover
First, place the bottom cover right under the backplate, and screw it in place using 2x M2.5x4 screws.
You may need to slightly lift the robot to access the screw holes, but make sure not to put too much stress on the head parts as they are not fully secured yet and could be damaged.
Once the bottom cover is attached to the backplate, place the Visor on top of it, and screw it in place using 2x M2.5x4 screws on the sides.
Check the cables
Quickly check for any wrongly placed cables before tightening the screws, as it will be harder to access them once the visor is installed.
All the cables going to the torso should be coming out from the hole in the backplate in a straight bundle, and not pinched anywhere.
Top Cover
Almost there!
Finally, place the top cover on top of the visor while making sure the antenna sits flat on the cover.
Slide the top cover from the front to the back of the head so that the ears motors fit into the cutouts on the sides of the cover, and screw it in place using 4x M2.5x4 screws (2 on the front for the visor, and 2 on the back for the backplate).
All good! ✨
Let's move on to the next step where you'll power up the robot for the first time and perform the zero motor calibration to center all the motors before mounting the legs and ears!