C3PO - Humanoid Movable Robot - Let's Doing One Part of Them.

For a long time I have been trying to implement my biggest project, which I have dreamed of for many years, i.e. building C3PO - a robot from Star Wars. I've already done two: R2D2 and BB-8.

I started the entire creation process by figuring out how the individual elements of the robot should move (head, body, arms, hands).

Once I had everything in mind, I printed and carefully sized the robot model. I then started the process of creating the mechanical parts design in Fusion 360.

I decided to get to know Fusion 360 enough to create a complete project, including motion simulation, setting the range of motion, etc.

The process of creating the project is not over yet :-) although a very large part of it is already implemented in the robot.

All designed elements were later printed on a 3D printer or cut with a laser.

Let's try to create one part of the robot, e.g. a mechanism for moving the head. If you are interested, I will prepare further tutorials on how to design and make the remaining elements of the robot.

How do you need:

• 3d printer,
• standard servo, e.g. TowerPro MG995 or 996 or Futaba, etc.,
• few nuts and bolts,
• ball bearing with an internal diameter 5mm,
• Pololu Servo controler - MicroMaestro or Arduino,

If you don't need create part from scratch, I attached files to print.

A dozen or so photos show my approach to design. All dimensions are given in the drawings.

I've included a video at the end of this tutorial showing you the entire process.

Generally, we select the plane on which we want to create a sketch and click SKETCH in the SOLID menu. Then we draw rectangles, circles or lines by selecting them from the SKETCH menu. The next step is usually (in this case) extruding part of the drawing. To do this, select the area of ​​the drawing and click the EXTRUDE button in the SHEET METAL menu.

In the next step we use construct plane to make our life easier when designing :-).

Select the rear wall of the model and click CONSTRUCT in the SHEET METAL menu. Then we select this plane and click SKETCH. We draw a shape like in second picture, using the LINE option from the SKETCH menu.

Then, select the drawn area by clicking in its inner part and click EXTRUDE from the SHEET METAL menu.

In the next step, we will add a ready-made element - a servo - to our project.

We can download the model, for example, from Grabcad.com. Go to the website, select the LIBRARY option from the COMMUNITY menu and enter MG995 or FUTABA in the search field. I chose the model with a servo horn (https://grabcad.com/library/futaba-hps-cb700-with-futaba-fsh-6w-servo-horn-1). We download the model and import the STP file in Fusion 360 - in Data Panel click UPLOAD button, select STP file from computer and click UPLOAD.

Next we drag the imported model to our project. Once the model is added, we can move and rotate it to fit our designed element.

Hide the Body2 element and select the plane on the servo horn. Click SKETCH and draw circles in places where the holes are on the servo horn. Select the drawn circles, unhide the Body2 element and use EXTRUDE to cut holes in this element. Similarly, we cut out the remaining visible holes in the drawings.

Click AS-BUILT JOINT in the SHEET MENU. Select the component you want to rotate and the other component. Set TYPE to REVOLUTE and use the mouse to point to rotate the axis.

And finally, the promised video tutorial (in two parts).

If you are interested in further tutorials on how to build this robot, let me know.

By.

PS. Sorry for my English ;-).

PS2. Ok, I have blog: magicrobotics.online