The robots move surprisingly fast. How do I know? My daughter and I are one of the teams :-) -- Dave Shinsel Facebook.com/ShinselRobots...
47528
hesperion22
Feb 1, 2013 6:28 am
"CONIFER —The robotics club at Conifer High School typically works on robots, but when club members had a chance to help a cat, they were up to the...
47529
David Buckley
robots42
Feb 1, 2013 6:36 am
Seeing as how they were built by Mark Setrakian I would be very surprised if they didn't work really well. For those of you who have never seen his work up...
47530
Pete Miles
ajklz5
Feb 1, 2013 6:42 am
sweet, I am so jealous of you Pete ... From: "dshinsel@..." <dave.shinsel@...> To: <SeattleRobotics@yahoogroups.com> Sent: Thursday, January 31,...
47531
David Buckley
robots42
Feb 1, 2013 1:04 pm
IIRC some time ago there was a dog which had a problem with its back legs which was also fitted with such a cart. ... From: hesperion22 To:...
47532
Max Cato
maxsthekat
Feb 1, 2013 6:40 pm
Hello all, Sorry for the spam earlier. It appears my account got hijacked. I have since changed the password and removed all secondary contact information....
47533
hesperion22
Feb 2, 2013 12:23 am
Dear Group, I am an admitted Newbie so please don't laugh. If any members could take an interest in advising me it would be greatly appreciated. I am trying to...
47534
km6vv
Feb 2, 2013 12:47 am
Should be easy enough to do. Use a 10K pot or so. Plenty of "demo" programs on the web illustrating how to interface pot (analog input) and a standard servo...
47535
Max Cato
maxsthekat
Feb 2, 2013 1:40 am
Definitely do-able. With a 10k pot you can take the +5v output of the arduino, hook it to one end, and use the arduino's gnd for the other end (with your sense...
47536
Rob Purdy
gausswave
Feb 2, 2013 1:40 am
Cool project! I gotta ask how was this origanlly handled? At the risk of sounding sarcastic why reinvent the wheel so to speak? OTOH going down th road...
47537
kevinr
kevinrockusa
Feb 2, 2013 1:55 am
Welcome Mr. Way, This is a fascinating application. How long are the traces in the normal organ? How many louvers are there in each swell-shutter? It is ...
47538
hesperion22
Feb 2, 2013 4:21 am
Thanks for the reply and input. A small amount of noise could be acceptable in most instances. Are you saying in the hard-wired version the power out from the...
47539
hesperion22
Feb 2, 2013 4:21 am
In the past (and present) this task is handled by bulky pneumatic engines. These are quite space consuming and complex as well as containing perishable...
47540
hesperion22
Feb 2, 2013 4:22 am
Hello, The traces vary in length from instrument to instrument. There really are no two situations alike. Some of the "swell-shades" are horizontal and some...
47541
kevinr
kevinrockusa
Feb 2, 2013 4:26 am
Beware of tossing problems to engineers :) Kevin....
47542
David Buckley
robots42
Feb 2, 2013 5:46 am
Using an off-the-shelf servo will be all right for testing but don't expect it to last 5, 10 or 20 years. You can make a servo system but choose a good quality...
47543
Wim Lewis
wimlwiml
Feb 2, 2013 5:48 am
... Interesting project! I think the arrangement you described would work perfectly well. An arduino, or any microcontroller, is kind of overkill for this...
47544
twcarroll@...
Feb 2, 2013 6:05 am
Michael, I've been following the replies / responses to your posting and everyone seems to have some good points. Having seen the 'insides' of a large pipe...
47545
Rob Purdy
gausswave
Feb 2, 2013 6:45 am
OK..... now's the fun patrt ( recall Kevins warning about engineers...;P ) Couple of things. Pots get dirty and wear out. The beter solution for this would...
47546
Max Cato
maxsthekat
Feb 2, 2013 6:57 am
Yep, exactly :) The Arduino can't put out much amperage, which the larger servos might need. A separate power supply solves the problem-- you just use the...
47547
Peter Balch
peterbalch@...
Feb 2, 2013 11:16 am
Hello Michael How did you choose the Futaba S3306MG? At 20kg.cm it's certainly pretty beefy. If it were me, I'd measure the torque needed to open and close the...
47548
hesperion22
Feb 2, 2013 7:34 pm
Thanks David, you definitely make some good points. These are concerns that also occurred to me. Yes, my thought (for testing) was to use cheaper stuff but...
47549
hesperion22
Feb 2, 2013 7:37 pm
I have yet to study up the 555 idea. I shall look into it. I imagine they (it and the Arduino) have their pluses. Thanks for the thoughts....
47550
hesperion22
Feb 2, 2013 7:44 pm
You grasp the situation quite well. I was quite concerned about the mass to move. More specifically the scenario in which the direction of movement was...
47551
hesperion22
Feb 2, 2013 7:55 pm
WHOA!! The mind reels! LOL. All very interesting ideas but probably for later incarnations of the concept. The organ is not "tuned" to each performer unless...
47552
Chuck Harrison
c_f_harrison
Feb 2, 2013 8:13 pm
Your point about stresses caused by sudden reversal of a high-mass load is worth taking seriously. A particular issue arises when there is some free play in...
47553
David Buckley
robots42
Feb 3, 2013 12:36 am
Michael I create animatronic figures for museums and use some off the shelf servos for lightly loaded and infrequent use movements. Even 1/4 scale servos (the...
47555
Jim Anunson
jimanunson
Feb 3, 2013 2:53 am
My computer says the below link is malware which came from an earlier Seattle Robotics email. I did link to the site and just glanced at it. Looks like it is...
47556
Rob Purdy
gausswave
Feb 3, 2013 4:04 am
Ok, I'm glad to hear this isn't viewed as a universal replace all option. What resources do you have in your shop? Must be an iteresting mix of wood and...
47557
Kevin Ross
kevinwross
Feb 3, 2013 6:29 am
We (Karl Lunt, Bill Harrison, Keith Payea, and myself and perhaps other SRS folks I can't remember) built a display for the Pacific Science Center back in...
