It’s a bit stange but there are so much project I’m doing that I can’t get the time to post them online. I already wanted to post this for quite a long time so there it is…
A couple of months ago, in the summer I made a prototype with my cnc machine of a, sort of, centry gun turret. I milled them from a piece of plywood 4mm which is prefect for making little simplistic things like a turret. Since I already got this hand loaded airsoft toy gun I first made some drawings and milled them. The pan-tilt unit looks a bit the same as the robotic arm I made earlier, I used the drawings of the rotation platform and modified them so there could be a toy gun mounted on them. Here below is a picture of the toy gun and the shooting box thingy.
Here are the pictures of what I made for mounting the gun on the platform, the gun is clamped between the wooden parts. As you can see there is a big gear on the side, this gear makes the vertical movement. I got this and another gear from a toy rocket launcher which I demolished another time. It’s always good to keep parts from things you trow away, especially gears which belong together. Always handy.
Here’s how I connected the gun to the mounting plates. I used a bearing which is pressed into the wood so it would fit nicely and for mounting the gun in the bearing i used a countersunk screw. Below is the result of how its all put together.
Here is a little movie of the structure:
So I first wanted to make it load itself with a servo or something and make it shoot with a servo but this all didn’t work out because it was a bit too difficult comparing to a electric airsoft toy gun which is so much easier to use for this kind of things…
Then, a few months later I came with the idea of making another airsoft gun turret, but this time with fairly cheap electric gun from dealextreme. Since this gun was much bigger I needed to make another pan tilt unit. I’m not able to make such big parts at my cnc machine at home so I machined them on a cnc at my school. The pan tilt unit is just 2 times bigger so nothing fancy on the design.
As you can see the design is kind of the same, but I added some extras:
A LASER sight! 🙂
Since this turret worked quite well I made a little PCB for it for controlling the toy gun, make it shoot with a relay. The PCB controls the trigger for shooting, there is a little Attiny13 which reads in the servo pulse and decides to power the relais (or not). I controlled the gun with a servo remote control, but the plan was to make a real centry airsoft turret with a camera and computer software. Since the servos I used weren’t strong enough I was not able to make it rotate that well and it was not precise enough, so maybe I’ll put some stronger ones in when I feel like it. As you can see on the pictures below…. (o, I love to just post pictures to show you in stead of writing ;))
A bit of an important fact is that there is a noise filter around the servo cable. There was a lot of noise which made the signal crappy to read in so I added this filter from a USB cable and wrapped the cable trough it 2 times.
Of course you want to see a movie of the gun itself, shooting 😉 I added a wireless mini camera on it and had some fun driving it all wireless from another room 😉
Just some shooting:
So that was my adventure on making these airsoft gun turrets, I really enjoyed making them, I just like to make things! If you want to know something, ask me.
Here are there drawings of the two turrets
I hope you liked it too.
Great job on the turret! I’d be interested in the drawings since I have a CNC router that I built and I am always looking for fun projects like this one.
I uploaded the drawings for you in DXF format. If you like to make this thing, you might need to add some kind of a bearing in the rotation platform because it has some resistance. (That’s another reason why I needed the stronger servos).
Sei un grande!!! Bellissimo progetto, ne sto studiando uno da apllicare sopra un rc car….quanto pesa la torretta con la pistola?
Grazie
Alex
I think it´s about 800 gram.
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Hi, i am from the Netherlands. I like your blog very much! Cool projects to!
I would like to know, de gears that u use, How many tooth does these gears have?
And the link doesnt work, could you fix that please?
Kind regards,
Mark
Hi,
Thanks, and I finally got time to fix the dead link, so now it’s updated. About the gears, I don’t know what gears I used back then, these came from another project..
Hi JJ,
A similar idea just came to me after a weekend at the ranch. What capacity do this servos (6k, 15k etc)? I believe adding a couple gears might reduce stress on the servo while increasing torque and give it some precision.
Im curious how you set up the trigger.
Thanks, David
Hi – where can I purchase one of these?
I’m sorry but their not for sale..
Hi i cant open the drawings, is there any chance you can email me them? im doing this as a college project!! thanks
Could you re-upload your drawings? I’m really interested in your pan/tilt mechanism and would like to see it in more detail, if possible!
Could you upload the drawings pleasee
thanks
Can you please reupload the drawings?
The turret you made is really cool. I want to make one, too. Could you upload the drawing again?