Servo controlled Silly-String Trigger
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Published on October 6, 2011
This thing was Featured on October 6, 2011
Description
This started out as a project to learn modeling in FreeCAD. I've attached the FreeCAD project file as well as the .stl models.
I'm not sure what I'll do with it, but it seems like it would work nicely in some kind of Halloween costume.
The main bracket works like a clip-on spray-paint trigger -- In fact, the bracket should fit other kinds of rattle cans as well.
The servo bracket was modeled to fit a hobby servo I had lying around. I've found that servos have a variety of different mounting screw patterns so you might have to modify this for whatever servo you're using.
A bent bit of paperclip works to connect the servo horn to the end of the trigger.
Here's a short clip of it firing: youtube.com/watch?v=fPpnoXX5sNc
I'm not sure what I'll do with it, but it seems like it would work nicely in some kind of Halloween costume.
The main bracket works like a clip-on spray-paint trigger -- In fact, the bracket should fit other kinds of rattle cans as well.
The servo bracket was modeled to fit a hobby servo I had lying around. I've found that servos have a variety of different mounting screw patterns so you might have to modify this for whatever servo you're using.
A bent bit of paperclip works to connect the servo horn to the end of the trigger.
Here's a short clip of it firing: youtube.com/watch?v=fPpnoXX5sNc
Instructions
Print out all three parts.
Snap the bracket into the collar on a can of silly-string.
Attach the trigger to the bracket with a 3mm screw. The bulge in the middle of the trigger should be pointed down and rest right on top of the spray can nozzle.
Tap the two holes in the trigger to 4mm.
Mount the servo to the bracket with the servoplate in between with two 4mm screws.
For additional rigidity, screw the other end of the servo to the plate with two more screws and nuts.
Control your servo with an arduino or other proto board.
Snap the bracket into the collar on a can of silly-string.
Attach the trigger to the bracket with a 3mm screw. The bulge in the middle of the trigger should be pointed down and rest right on top of the spray can nozzle.
Tap the two holes in the trigger to 4mm.
Mount the servo to the bracket with the servoplate in between with two 4mm screws.
For additional rigidity, screw the other end of the servo to the plate with two more screws and nuts.
Control your servo with an arduino or other proto board.
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Mjolnir
on
October 7, 2011
said:
Interesting. The US military has been using silly string to find tripwires in buildings that they are clearing. Could we combine this with a turtle shell racer and have a remotely controlled vehicle for tactical use?
jtbarclay
on
October 7, 2011
said:
Someone needs to put a bunch of spray cans on their mower bot and paint a portrait of themselves on their lawn.
License
Servo controlled Silly-String Trigger by sliptonic is licensed under the Attribution - Creative Commons license.
More from sliptonic
Tried to print, the bracket won't skeinforge,
I can't duplicate your problem. I'm skeining it with SFACT and pronterface and it goes fine. The STL also imports into blender without errors and I don't see and holes in the mesh. Any more clues?