OTTO RED

Hi, today we will be learning a bit about robots. Everyone has seen or interacted with a robot as they are everywhere around us. A robot is a machine that carries out tasks programmed by a computer.

Let's not make things too complicated and start out with an easy fun project that can get you started in the world of robots.

I introduce you all to OTTO DIY a very simple assembly project. It uses four servos (motors) to move the body and the legs. For a micro controller it uses a Arduino nano and for the servos, a servo driver.

OTTO can dance, sing, walk, and avoid obstacles, so let's get started.

Supplies

This is a list of the parts used for this build:

1. Nano ATmega328

2. Nano Shield I/O

3. Mini USB cable.

4. Ultrasonic sensor HC-SR04

5. Mini servo SG90 9g x4 (each one should come with 2 M2 pointed screws and one small screw).

6. Buzzer

7. Dupont wire cable connectors.

8. 9 Volt battery case.

9. 9 Volt battery.

10. Mini cross screwdriver. it is important to be magnetized

11. LM7805 9v to 5v converter.

12. 3D printed head, 3D printed body, 3D printed leg x2, 3D printed foot x2.

13 Soldering iron.

14. On/Off switch.

Let's Goooooo.

First we want to make sure we have all of the parts for the project before we begin so go through your list and check.

Now we can start

Grab the bottom piece of the OTTO

next grab a servo and fit it into the left hole and screw it in

do the same with the right hole

the magnetic screwdriver really helps with the small screws.

(the small screws come with the servos in a packet with the plastic adjusters).

Now That's Some Progress.

When we are done placing the servos for the legs we will continue with the legs

grab a leg doesn't matter right or left

next grab a plastic adjuster and fit it into the top of the leg this adjuster has teeth that grab on to the servo motor under the bottom piece of OTTO

once you have your piece connected grab the smaller of the screws and screw it into the opening of the adjuster connected to the servo

now grab the other leg and repeat the same process

you should end up with parallel legs

(label your servos as we need to know which one is which, just do right leg, left leg, right foot, and left foot, THIS IS VERY IMPORTANT SO WE DO NOT GET CONFUSED)

We're Onto Something Here.

let's continue with the servos for the feet

grab a servo and run the wire through the opening of the leg that runs to the inside of OTTO then place the servo in the fitting in the leg and screw it in

there is a small hole in the front of the leg that is designed for a small screwdriver

turn the legs to the side and wiggle to make sure its well connected

Loading.....

We have legs and now we need the feet

Grab the right foot and a plastic adjuster

first place the adjuster in the servo that is coming out of the leg and screw it in with the long part facing up

now grab the foot and make sure the flap is facing out

slide the foot and latch it on to the leg this will require some patience and a bit of strength the long part of the plastic adjuster will fall into place as the foot should have an opening to keep it in place

repeat this process with the other foot

You're Doing Great.

Once we are done with the legs we can move on

lets grab the on/off switch and place it on the small opening at the bottom of the OTTO body

run the wire first and then screw it in

now connect the on/off switch to the battery case but do not plug in the battery just yet

Almost There.

for now we are done with the bottom piece of the OTTO body

grab the head or top piece of the OTTO

then grab the Ultrasonic sensor HC-SR04 and place it inside the head on what looks as the eyes with the connection pins facing up

next we will grab the Nano Shield I/O and the Nano ATmega328 and connect them after that it should be one piece

the Nano needs to be placed inside the OTTO head with the pins facing you and the USB and power connections will help you arrange it, now just screw it in with the leftover screws