OTTO DIY Project

This Instructable will show how to build an OTTO DIY robot!

To build OTTO, you'll need these materials:

1. Arduino Nano

2.Arduino NANO Shield I/O Extension Board Expansion XD-212

3.Mini USB cable. This should come alongside the Arduino Nano.

4.1 Screwdriver

5.HC-SR04 Ultrasound sensor.

6.Mini servo SG90 9g x4. Comes with 2 pointed screws and one small screw, alongside a plastic attachment for the rotor.

6. 5V Buzzer.

7. Female to Female breadboard connectors cable 10cm x5.

8. 9V Battery case

9. 1 9V battery.

For the OTTO's body, these parts can likely be bought from the OTTO DIY website or printed using the files on the site.

11. 3D printed head.

12. 3D printed body.

13. 3D printed leg x2.

14. 3D printed right foot.

15. 3D printed left foot.

We start with the feet. Taking two motors and two single-direction plastic parts that came with them, and attaching them to the leg. Then screw motor and leg together with the two small screws.

Next, we will use the remaining two motors and fit them nicely into the slots of the body. We will then screw them.

Find the leg parts and the single-direction plastic parts again. Put the plastic inside the leg and place the leg onto the body. Carefully make sure the orientation of the leg is the correct way. Fasten the legs and body together with screws.

Next, attach the feet to the legs. First, look for the labeling of left and right on the feet to help put them on the right leg. Then, thread the cord through the slip that's below the motor. In case there is not, make sure the feet are facing outward and that the circular indentation on the leg fits into the feet.

For OTTO's head, get the top body piece, Arduino Nano, and its extension board, and the ultrasound sensor. You will start by putting the Nano into the double row of plugs on the extension board, with the USB port on the same side as the charging port is on. Next, attach the eyes into the slots with the prongs facing up. Then place the extension board inside the head behind the eyes. Make sure to align the extension board with the headpiece. The USB port and charging port must match the holes on the headpiece.

Connect the servo wires, sound buzzer, eyes, and power button. Follow the diagrams.

For this otto splicing the ends of the wires were needed to pair the buzzer to the board, as well as the power button.

Lastly, connect OTTO to your computer using the connection cord provided with your Arduino kit, and upload a code of your choice from the libraries on https://github.com/ottoDIY/OttoDIYLib?tab. OTTO is complete and can now dance and sing!