The Turret

What is being worked on right now
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dragonator
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The Turret

Post by dragonator » Wed Aug 09, 2017 2:13 pm

Why has it been so quiet here for the past month? I have hinted I was incredibly busy, and that was no exaggeration. I went to SHA2017 in Zeewolde, and I wanted to make something for it. I ended up wanting to make something way too difficult for the time I had, I only had slightly over a month to design and make this. I have worked all nights and all weekends to finish it on time, and even then I didn't actually finish it completely.

The title did already give away what I built, I built a turret from the game Portal. The scale really doesn't come across on any photo. It is 1.3m from the ground up. It can open, close, move the guns up, down, left and right. It has a laser in the eye that can also move with the guns. It has a camera with a raspberry pi to track people, sound in the front to make it sound like a turret. And best of all, it has 4 fully functional nerf guns to shoot with.
Turret pre-sha.jpg
Turret pre-sha.jpg (395.06 KiB) Viewed 2244 times
That was what it is going to do. At SHA we only had the movements and 4 poorly working nerf guns that constantly jammed. The raspberry pi side was still being worked on and was not finished on time. Still, it gathered quite a crowd at SHA.

The project is going to be finished for a few other events coming up, but for now enjoy a nice photo (there are no videos yet) of the turret in it's full unfinished glory. In the mean time, I will pick up some old projects again.

ajvinke
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Re: The Turret

Post by ajvinke » Wed Aug 29, 2018 8:05 pm

a late response but that looks Awesome.
It looks great and i believe you when you sway it cost a lot of time

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dragonator
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Re: The Turret

Post by dragonator » Sat Jan 05, 2019 4:05 pm

2019 will be started with me trying to finish the Turret. It has been standing at my local hackerspace for over a year and a halve, unfinished. I have had a few weeks to design things, so I though I'd post updates on the Turret here.

Last time I worked on it, it was after SHA2017. A mad struggle to get it finished in around a month. Mechanically it is mostly sound. Electrically it is a disaster and in software it does not work at all. Here is a list of what needs to be done in the coming few months:
  • Get the outer shells 3D printed. They are laser cut parts covered in fabric. This was a time saving measure and though it did save a lot of time, It is also the worst looking part.
  • Redo the feeders in the guns. The feeders constantly jam and burn motors.
  • Add checks and double checks to all motion. I want the turret to be able to run on it's own. It can only do this if it can stop when stuff goes wrong.
  • Add the last of the cosmetic shells. Again, not done due to time.
  • Complete rewire of the turret.
  • New programming on both software and firmware
  • Make a nice video of it
I have done most of the design work in the last two weeks. There is still small stuff left to be done, but I will start 3D printing in the coming weeks.
BT WIP2 20190105.JPG
BT WIP2 20190105.JPG (137.11 KiB) Viewed 272 times
I will leave for now with 2 videos of 2 experimental feeder designs I tested. The current winner is the rack and pinion feeder for compactness.




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Re: The Turret

Post by dragonator » Sun Feb 24, 2019 5:58 pm

A few more weeks, a few more progress.
DSC02308_LW.jpg
DSC02308_LW.jpg (477.71 KiB) Viewed 85 times
I first tore out all of the wiring that was in the turret. This was a mess that I did not even want to fix. I then started to rewire the turret (this time with an actual design beforehand). The basics are still the same. There is a 12V/30A power supply in the base. This goes through the tubes to the turret. Here it goes to the Arduino mega, a Raspberry pi and now also, a relay block that allows me to switch off blocks of the turret if they give issues. I want to turret so safely run without anyone babysitting it. Wherever 5V is needed, a step down converter is used.
DSC02343_LW.jpg
DSC02343_LW.jpg (487.75 KiB) Viewed 85 times
I then rewired the eye. This block holds 8 leds to light up the plastic disc of the eye, a laser diode, and 2 servo's, one for pan and one for tilt. I am happy to report that it now works again.
DSC02359_LW.jpg
DSC02359_LW.jpg (457.58 KiB) Viewed 85 times
DSC02366_LW.jpg
DSC02366_LW.jpg (494.35 KiB) Viewed 85 times




Next is the pan and the open/close mechanism for the guns, and to finish the redesign of the guns. Both should be done in the coming few weeks.

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