Subject:
|
Re: The Great Ball Contraption
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Thu, 20 Jan 2005 12:27:14 GMT
|
Viewed:
|
4523 times
|
| |
|
|
In lugnet.robotics, Jordan Bradford wrote:
| |
I got super-motivated and built myself a
ball pump last night.
|
Wow, nearly untouched territory... pumping Steve’s... oh, never mind.
On a more pratical note, does your pump meet the height requirement for the GBC?
I’ve got two ball pumps working, but both have the same problem - allowing room
under the hopper for the piston mechanism makes it hard to have a deep hopper
(and I’d really hate to use a “high hopper” for the ball pump that has to be
filled from the standard input via another mechanism).
| |
it’s jam-proof if the marbles come once every
second or so.
|
Mine has no problem with jamming, but occassionally problems with “clotting” in
the hopper starving the pump itself. Can yours handle a crate of balls dumped
all at once? I wonder what the ultimate percentage of “continuous output” vs.
“batch output” modules will end up at.
| |
keeping tension in the tread links is proving
difficult. Any ideas on how to do that?
|
If you need constant tension, one way to do it is tensioner. A third gear in the
chain, that can be moved in and out changing the shape (& therefore length) of
the triangular chain path. This doesn’t have to be hand-tuned either - use a
idler gear on a small free-swingin arm that is held in tension by a weight or
rubber band.
| |
One suggestion for people: I don’t like mystery
mechanisms.
|
Well, one of the ball pump designs I’ve built can have one side of the
mechanism built out of clear panels... that is, if I could *get* any of them.
After I built it, I found S@H had run out, and Bricklink has (currently) *one*.
Sigh... Also, most of my designs are ending up rather skeletal, due to the lack
of pieces left for building.
--
Brian Davis
|
|
Message has 1 Reply:
 | | Re: The Great Ball Contraption
|
| (...) I don't know if it fits into the standard or not. I didn't plan on using it as my first device, anyway. I'm going to build a simple large hopper for the previous person's contraption to feed into mine, and then I'll have a feed chute or (...) (20 years ago, 21-Jan-05, to lugnet.robotics, FTX)
|
Message is in Reply To:
| | Re: The Great Ball Contraption
|
| What's funny is the other day I was thinking of building a marble machine with LEGO. After reading about this contraption system, I got super-motivated and built myself a ball pump last night. I only spent a few hours on it, but I think I have it (...) (20 years ago, 20-Jan-05, to lugnet.robotics, FTX)
|
94 Messages in This Thread:
 
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
Active threads in Robotics
|
|
|
|
|
|
