But what about scale? Well it sure won’t be 1:1 because that would be a bit too much to print, but what I did was to create a block shape the size of the raspberry pi, the brains of the operation and then scale the image of the turret until it fit into the body. Not only that, but you can click on the various parts and they’ll be isolated to increase visibility on that part. The 3d view will be perfect for taking snapshots of the model to insert onto sketching planes when creating the robotic version. On the left side of the screen you get a 3d view of the paper model and on the right you have the unfolded printable version of it.

I opened it, and guess what? It’s perfect for the scope of this project. What is that? Well, apparently it is a pepakura model and it can be opened with Pepakura Viewer which you can find here. After downloading it (I can’t find the link but I’m hosting it on google drive), I saw it had a *.pdo extension. There are a lot of these models available. Of course, it will be able to play the turret sound from the game.īut how does one get started on such a project anyway? Well I did some googling and I couldn’t find any 3d models which I could use as a basis for my 3d printable, functional model, and the pictures I could find online with the turret were all isometric views which I couldn’t exactly use as a reference.Īfter a bit more searching, I stumbled over a paper craft model. The basic idea is to have the Pi connected to either a webcam or a Pi camera mounted in the body of the turret and with a little image recognition identify the height and angle of body rotation at which a face is found and then via the serial port command and arduino to move the servos, change LED colors and so on.

I will be using a Raspberry Pi for the brains of the operation. Edit: Oh my God, not a pellet gun! I thought they’re something else.

The gun will only probably be an led or something safe like a pellet gun. And by real I mean the turret body should rotate side to side about 90 degrees, the machine gun part should move up and down and be able to point the gun and body towards a face. Edit: Youtube Series on the way! Check out my Channel.Īfter finally having gotten around to building a 3d printer of my own, and being inspired by youtube videos I thought about making a “real” HL2 turret/Sentry Gun.

Half life 2 turret