Another thing to do with the blue ball
Mates,
Inspired by some researches of two MDPs in the NXT military sector and pushed by the "Throw it" challenge on NXTasy.org, I've gone in some works for a Blue Ball Gun.
These efforts finally resulted in a NXT robot called "Dicke Bertha" - feel free to have a look.
Feedback is highly welcome (as usually).
Cheers,
Matthias Paul (fond of reminiscent names)
Inspired by some researches of two MDPs in the NXT military sector and pushed by the "Throw it" challenge on NXTasy.org, I've gone in some works for a Blue Ball Gun.
These efforts finally resulted in a NXT robot called "Dicke Bertha" - feel free to have a look.
Feedback is highly welcome (as usually).
Cheers,
Matthias Paul (fond of reminiscent names)
Comments
I love it! I like the way you propel the fireing mechanism...worm gears used as gear racks is new to me. I think that this would be a great aplication for bluetooth. It may beposible for the device to find enemy's (other NXT bricks) using bluetooth.
> Is it interacting with Goliath in some way or is it timed?
The Goliath target robot sends a bluetooth signal once it has unfolded the target device add-on (which the gun reacts on).
maniac000 said:
> It may be possible for the device to find enemy's (other NXT bricks) using bluetooth.
Well, just if the possible target sends a bluetooth "here am I" signal; and even then the gun could not figure out WHERE the target actually is located, I think.
A possible extension for the gun could be to have a rotating ultrasonic sensor (which would turn it into some sort of RADAR-guided gun) - that would require a fourth motor, hence a second NXT, though.
guy ziv said:
> You do get the 2nd place at this stage
Great!!
So I'm going to send it in by any means. I've created two additional videos to this end to illustrate the firing range (which turned out to be app. 90 cm, not just 60 as I had estimated beforehand) - one is linked on the page.
Thanks for all the encouraging feedback.
Matthias Paul
Jim
I really hoped you would say so :-)
M. (satisfied)
If you could figure a way to add a "clutch" of sorts, that engages a spinning motor for a short, sudden burst of power, you might get some more distance, but building a clutch is probably not as easy as it sounds...
Jim
Jim said:
> If you could figure a way to add a "clutch" of sorts, that engages a spinning motor for a short, sudden burst of power, you might get some more distance
I guess the challenge here is to find the optimal balance between the pressure of the clutch and the ability of the motor of the bolt to overcome the clutch's resistance.
Once I'm using a second brick I might add a fourth motor to the gun that could work on the other side of the worm gear to enhance power.
Yet, two bricks for one robot will noticeably increase the coordination complexity.
M.
"Once I'm using a second brick I might add a fourth motor to the gun that could work on the other side of the worm gear to enhance power."
I was under the impresion that the competition was one NXT set only...are you talking about an anuoficial entry?
>I was under the impression that the competition was one NXT set only...are you talking about an unofficial entry?
For the challenge, I'd stay with one brick and re-use the rotation motors (thus refraining from rotating the gun).
But the gun itself should have more features in the end - a gun not being able to rotate isn't a real gun, is it?
i dont have yet the NXT set but the idea is already on the paper
But the gun itself should have more features in the end - a gun not being able to rotate isn't a real gun, is it?
Agreed. I think the next thing you should add is an ammo pack. Somehthing similar to the devices that hold the Zamor shears, but these would hold the balls. Then you could have multible shots. I'm guessing you have around four balls...