Mindboards

I am considering something along those lines. The object is cylindrical and smooth, so I could use a couple rubber treads to grab onto it. My only concern is if it slips. Since the object is smooth it is susceptible to slipping and as I am moving it frequently, any loss of movement is unacceptable. ...

Ok...so after more research, and build revisions I have found the following;

~40lbs movable on lego bearings on youtube.

I added a 2nd motor to my turntable and run both at 50% power. Seems to work well for 3lbs.

I still have some work to do on my frame, and this will take some time....

I have a project I'm working on that requires rotating a small 3-5 lbs object and I'm looking for suggestions or examples of ways the NXT (motors) can handle that. Since I don't have to actually grab anything, it seems like a simple project, but have found a few issues. Mainly handling the weight is...

Really? 250cm....From my few times experimenting and comparing it with the old Hitechnic US sensor, they were about the same at about 1m. Also, some other reference information that appears to match these results; http://cs.brown.edu/~tld/courses/cs148/02/sonar.html I will take a look at it again......

more thoughts... An US sensor will give you limited range. They are really only good for less than 2 or 3 feet. One option would be to have the set up as follows; target moving ->.........US1..........US2.............Shooter 0........................... oo...........oo................../\ ======trac...

Sound interesting. Before more experience people chime in, here are my thoughts; 1) What do you mean by "double ping"? Do you have two US sensorsors, or one that you will attempt to ping twice? I assume you will be using two, since the latter option would introduce more complication. 2) Wh...

Ok, so now moving this onto the NXT. A few things to note; 1) I had NO problems with the RCX set-up as described above. Obvious limitations on the RCX (display, memory) had me move onto NXT now. 2) I modified the Electronics Goldmine kit (even the newer one has the same circuit as this link) per the...

Don't give up! There are several ways to tackle this problem. It is good to learn the things you have, even as limitations. In addition to the suggestions above, there may be other things you can do. It is a good idea to use other sensors to verify rotation or limits. Another idea is to set up "...

That was my first impression of this site originally, based on the responses I received. But, keep in mind the local audience. People working with robots tend not to have the best "people" skills. Also, there is a wealth of information and experience here on a very specific subject. And th...

Reminds me of parts handler equipment.

All it needs is a feed bucket, a way to straighten out each part , and sort by size as well.