Rubber bands sentry gun

by tristomietitoredeituit, published

Rubber bands sentry gun by tristomietitoredeituit Aug 3, 2015


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Full-auto sentry gun, shoots rubber bands.

Youtube: http://youtu.be/YoOh4k-KuBM https://www.youtube.com/watch?v=nvMih-ZmREQ&feature=youtu.be

For the software, follow the guide: http://projectsentrygun.rudolphlabs.com



!!! for the barrel, set the scale dimensions on X 35.12mm and Y34.97mm

mechanical parts:
-3 M5 50mm screws
-2 M4 30mm screws
-1 M4 40mm screw
-12 M3 16mm imbus
-3 M3 10mm
-15 M3 nuts
-3 M5 nuts
-6 M4 nuts
-3 M6 nuts
-10 servo screws
-1 M6 80mm threaded bar
-1 skateboard ball bearing
-1 30 cm piece of string
-2 135 mm x 8mm ⌀ metal pipe
-1 35 mm x 8mm ⌀ metal pipe
electronic parts:
-1 180° micro servo https://goo.gl/GRKsp6
-1 180° servo https://goo.gl/5jcvtU
-1 360° servo https://goo.gl/zJERWf
-1 arduino UNO, 2009 or Mega https://goo.gl/x48Jxj
https://goo.gl/CNkZT4 https://goo.gl/Bu8rp8

optional (for manual cotrol):
-1 joystick https://goo.gl/tStURH
-1 button https://goo.gl/ovzagP

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I love the cover. It makes me think of Portal. If I make one of these it would have to cheerfully talk to you while shooting

hi man im printing can you put the list of materials please

Need some way to install a camera, otherwise it's really cool

A little WiFi video camera and Bluetooth control and you'd really have something ......

The top shell is part of a Air Wick Freshmatic automatic air freshener. I think I found the correct model, but the only place I could find a good photo of it was on ebay: http://www.ebay.com/itm/Air-Wick-Freshmatic-Automatic-Air-Freshener-Dispenser-White-Fresh-Waters-Refill-/301527240198

Great project, currently printing. What did you use for the white cover/house? Is there a file available?


Your BOM on the instructions has a mistake. The metal pipe dimensions should be 13.5cm and 3.5cm, 8mm diameter I assume ?

you're right, thanks!

Could you post the source files?

Sure but all the files are in ".fun" format. I think you can open them only with cubify invent

i just uploaded a scaled version of the barell: http://www.thingiverse.com/thing:969957

@ tristomietitoredeituit
first of all, very cool project!! i am very interested in the shell too, it would be nice if you could add it!

Scaled Rubber bands sentry gun barrel

Hi and thank you! I'm glad you like the project. Unfortunately the shell is not a printable part, is a piece of the case of an air wick freshener

Cheers mate. Your a champ!

Cheers mate. Your a champ!

I'm having problems scaling the barrel. Could you please uploaded an already scaled model. Thanks.

Printing one of these out. Unfortunately by printrbot SM only has ~6x6x6 build volume and the base bottom is slightly too big. Are you able to provide the source so I can tweak it a bit? Also the 'shell' seems to be missing (and also too big for my printer).


Edit: Remixed version of the base with rounded 'legs' now up; fits inside 6x6 build plate.