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Messages 12081 - 12110 of 12110   Oldest  |  < Older  |  Newer >  |  Newest
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12081
I had my system setup as an DS-127. I have since set it up as an ETX-70 and a quick test seems to have solved th problem. I will give it a comprehensive test...
phillc54
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Oct 22, 2009
12:36 am
12082
Cool! I think you might want to consider making yourself a larger set of worm gears... "My advice is always free and worth every penny!" -Christopher Erickson ...
Christopher Erickson
data_plumber1
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Oct 22, 2009
5:43 am
12083
No testing tonight due to cloud cover so I have uploaded some photos under '10" SkyWatcher Dob' in the photos folder... Cheers, Phill...
phillc54
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Oct 22, 2009
10:56 am
12084
Hi All, I have uploaded photos of my conversion to '10" SkyWatcher Dob' in the Photos folder. Cheers, Phill...
phillc54
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Oct 22, 2009
10:56 am
12085
Phill, I'm so impressed! That is truly beautiful engineering! Can I ask where you source your ring gears? Short of spending hundreds on Byers gears on eBay...
Jim Chung
jimchung2338
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Oct 22, 2009
1:02 pm
12086
Chris, Just wanted to confirm my thinking. Larger ring gears will improve accuracy of GOTOs and minimize backlash issues. Will they also reduce strain on the...
Jim Chung
jimchung2338
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Oct 22, 2009
1:05 pm
12087
Hi Jim, I can answer that - yes. The larger the diameter, the less torque needed by the motor driving the worm, given the same load (ISTR it's directly...
Hemmings, R.K.
darkstarshado
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Oct 22, 2009
1:27 pm
12088
Jim, I made the worm gears my self, the worms are mild steel, the worm wheels are acetal and the housings are aluminium bar. I made new bushings for the...
phillc54
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Oct 23, 2009
10:27 am
12089
I've done a retrofit of DS motors and a WarpsDrive kit to a CG-5. The belt drive is terrific at cutting dow/out backlash and gives a terrific positive feel to...
ridgway.peter@...
ridgway.pete...
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Oct 26, 2009
5:20 pm
12090
There is a document in the Files section of this group's home page titled "gear ratio gospel" and it should help you to figure out the ratio you need. "My...
Christopher Erickson
data_plumber1
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Oct 26, 2009
9:03 pm
12091
Assuming I have an encoder output that's quadrature in nature, if I cut every other tooth out of an encoder wheel will I effectively half the ticks/revolution?...
pinyachta
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Oct 28, 2009
12:37 am
12092
Every change of both phases counts as 1 tick (light passes through to light being blocked and the other way around). Normally the pulsewidth is around 50%, by...
cas
rapsacw
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Oct 28, 2009
1:03 am
12093
I have a problem visualizing an encoder with low enough resolution that would allow that, removing a 'tooth", and have sufficient resolution for a telescope....
jim
ljlong666
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Oct 28, 2009
2:01 am
12094
Since we're in a (mostly) Autostar-centric group, let's look at how the Autostar does it. The encoder is on the motor shaft, so the physical gear ratio between...
autostaretx
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Oct 28, 2009
3:53 pm
12095
The place where a great unknown is introduced is the effect of non-50% duty cycle on the Meade Motor Control cards, and their "servo-loop" action. It's the...
autostaretx
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Oct 28, 2009
4:18 pm
12096
I see. Thanks for the explanation. Not having one, mead controller, I was some what mystified on how they got the resolution required. A 9000 to one ratio...
jim
ljlong666
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Oct 28, 2009
7:39 pm
12097
I certainly cannot think of ANY reason, ever, to reduce the 'physical' number of slots on an encoder wheel. It just doesn't make sense to me, certainly not...
njsgps
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Oct 28, 2009
8:16 pm
12098
The one reason to contemplate chopping teeth from the encoder would be if you were using a -faster- motor. Meade's motor cards are limited to about a 20 KHz...
autostaretx
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Oct 29, 2009
3:13 am
12099
Hello all, Does anyone know of an rf adapter that will accept digital serial input stream for at least 230kbps payload and do 100% duty cycle transmission time...
lynol1000
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Oct 29, 2009
10:39 am
12100
Thanks all. Thanks all. What I am trying to do is suss out the trade offs in tossing around a 150 pound OTA. I want accuracy and as high speed goto slews as...
pinyachta
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Oct 29, 2009
7:22 pm
12101
... ... and cheap and Autostar-controlled.... Will you settle for two out of four? ... That URL does not lead to a working page. It expands to: ...
autostaretx
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Oct 29, 2009
8:18 pm
12102
... Try -this- link: http://www.campocatinobservatory.org/galleria.asp?Gruppo=C.A.O.&Titolo=C.A.O. (replacing the central "space" with a "question mark" (?)) ...
autostaretx
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Oct 29, 2009
8:24 pm
12103
http://www.campocatinobservatory.org/galleria.asp?Gruppo=C.A.O.&Titolo=C.A.O. ... http://tinyurl.com/yh3ak2f Thanks! ... If we have to. There's no room in the...
pinyachta
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Oct 30, 2009
12:41 am
12104
CAS, Cool work here! http://tech.groups.yahoo.com/group/RoboScope/message/11380 A question about one section of the code: ... comm_recv = ticks<<16; // data is...
lynol1000
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Nov 6, 2009
2:15 pm
12105
Only 25 bits are transmitted, so the last 7 are don't care. ps: there is an error somewhere in the code with the communication with the autostar, the data line...
cas
rapsacw
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Nov 6, 2009
4:13 pm
12106
Cas, Ok! Have you ever had the chance to try one of the new 497EP's against this code? There are a few new surprises in the Calibrate section that Andrew is...
lynol1000
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Nov 6, 2009
5:54 pm
12107
No, I haven't. I only have the old version here. Cas ... From: lynol1000 To: RoboScope@yahoogroups.com Sent: Friday, November 06, 2009 6:54 PM Subject:...
cas
rapsacw
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Nov 6, 2009
7:31 pm
12108
I've updated the source, sadly i can't test it anymore, i've stripped the autostar connection from my board and connected it to my EQ3 mount for tracking...
cas
rapsacw
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Nov 6, 2009
10:16 pm
12109
I've been working on a "clone" of Al Peters' design to use the Autostar will higher power motors. Looking at his DS circuit mods ( http://tinyurl.com/yj9zjf3 )...
pinyachta
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Nov 7, 2009
2:06 pm
12110
Yes those are pull-up resistors, unless you connect them to a non 3 state device (to a TTL gate output) you should connect them to vcc. I remember that even...
Freddy Diaz
fjdiazg
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Nov 7, 2009
2:30 pm
Messages 12081 - 12110 of 12110   Oldest  |  < Older  |  Newer >  |  Newest
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