Throughout the modelling process, I generally upload in-progress temp versions of the model to Shapeways, so I can check how much it's currently going to cost. The reason for this was that I was concerned slightly about the weight on the joints of the model, as some would be quite small and thin.Īs with any character, generally the easiest way to model them is in the standard T-Pose. I decided to make this a model that is locked in a pose rather than one that has any moving parts. From there, I grabbed a notepad to make my plan of attack so that the model would be able to house the LEDs for the eye and the 2 elbows and I could get everything clear in my head. It's all invaluable reference material when creating the 3D model, so it's worth spending time and getting a lot of it. All of which covered multiple angles, distances, some were concept art, some were proper renders and some was even fan art (fan art can be great ref material). I might add this later, or let some other keep people at my hackerspace do this, but this is not present at the moment.I start where I always do creating the 3D model.Īfter many hours of trawling the internet I had managed to grab around 50 reference images. #PORTAL TURRET 3D PRINT SOFTWARE#The firmware can handle autonomous operation, but the software does very little automatically at the moment. Also, the autonomous operation is not really there at the moment. It is a poor method of tracking targets, but it is a simple way and I was running out of time. Currently it does simple blob tracking with Pygame in python. Now while I would love to say the software could do amazing work, it cannot. Together, they can make all the functions on the turret work. It also handles the speakers in the base. #PORTAL TURRET 3D PRINT MANUAL#It looks at either a camera input or manual input, and determines where the turret needs to move. The Raspberry pi is responsible for the intelligent stuff. #PORTAL TURRET 3D PRINT SERIAL#It can receive commands via serial and executes them. It moves all axes, it has several layers of protection for each motion, it handles all of the leds and servo motors. The Arduino mega does all of the visible parts. The turret is controlled using an Arduino mega 2560 and a Raspberry pi 3+. Luckily, with 4 guns, the chance of 1 working is quite big.Īrduino side wiring fancy schematic Control There are extra weights on each magazine and even with those the guns do sometimes jam up. I said hopefully because gravity fed nerfs work poorly. When the dart hits the flywheels, it is accelerated and shoots out. The rack and pinion then moves the feeder to the front, hopefully with a dart. It moves to the back using a rack and pinion system (shown below). To shoot, first the flywheels are powered. A wire also connects to the spring loaded part, so I can remove the shells, even if the turret is closed.Įach of the guns consists of a gravity fed magazine, a feeder and a flywheel shooter based on 2 outrunner motors. When pushed down, the motor gear disengages the big gear on the pan/open and the shell can be taken off. Because the gearing is heringbone, the gear locks the tilt in place. The tilt motor is a spring loaded hobby servo that pushes into the gear of the pan/open mechanism. the power for the turret comes in at the back.Įach gun has a separate tilt, a set of bearings for the tilt and 2 nerf guns. The tube also carry power wires, speaker wires and an Ethernet cable. The legs are only for show and cannot support any weight. The base has 2 aluminium tubes (painted black) that support the actual turret. Ideally I would love to have a free standing turret, but given the weight and the materials I can use, I have chosen a base. The base provides a support for the turret, and a place for the power supply and speakers. This is the big grey cabinet under the turret. Lets start at the bottom, and work our way up. It also allows me to use less than perfect pictures, so be aware. This is the amount of detail not everyone cares about the same, so I stashed it on this page. In this page I will give a rough overview of what is in the turret and what it does. #PORTAL TURRET 3D PRINT FULL#The Making Of: Full Scale Portal Turret (Part 2).The Making Of: Full Scale Portal Turret (Part 1).
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