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...
47558
David Buckley
robots42
Feb 3, 2013 6:50 pm
The problem with brushless motors is you need fancy controllers, easy if you are in the hobby/model world but not as common and more expensive in the...
47559
Chuck Harrison
c_f_harrison
Feb 3, 2013 8:12 pm
Michael, One good thing about your application is that (I presume) it is low duty cycle -- an organ only gets played a few hours a day and probably only a few...
47560
Randy Carter
randycarter2001
Feb 3, 2013 8:18 pm
The key to know the message is bogus and a future problem is to look at the recipients list. This message had several recipients. It looks like the message...
47561
Pete Miles
ajklz5
Feb 3, 2013 10:53 pm
Well, here is my 0.00002 cents worth. If you are expecting R/C servos to be reliable, then prepare to be greatly disappointed. They are not, and have never...
47562
Mark Kenworthy
kwmachine
Feb 3, 2013 11:07 pm
You might want to ask the same question of the Seattle Metalheads Yahoo group. There's a fair amount of expertise on that list running stepper and (CNC type)...
47563
David Buckley
robots42
Feb 4, 2013 12:12 am
If you buy a professional lever actuated pot such as is used on golf carts, and mobility chairs, or an industrial quality servopot (~$15) you won't have to...
47564
Rob Purdy
gausswave
Feb 4, 2013 12:59 am
lol Speaking of metal heads....I just up at Andy's place today and I brought this up. First words out of his mouth was linear motor. Funny thng was I was...
47565
km6vv
Feb 4, 2013 2:23 am
sorry for the duplicate post. Anyone seen an application for an iPhone to allow me to do serial read of my u-Blox 5 GPS? I need a highly portable (and...
