I've also sent Neil the code for controlling servo based focusers, it can emulate a stepper motor too which is damn handy and gives a better accuracy I...
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bdmaple
Nov 6, 2009 12:49 am
Servos are nice if you have a encoder that's for sure. The JMI Focuser uses a dc motor. But I simply rev-engineered the command sequence to work with my...
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Stephen Campton-Jones
stephen_camp...
Nov 6, 2009 2:17 am
Dustin I have just bought an EasyDriver 3. Little Bird Electronics only stock easy driver 3, but I have looked at Sparkfun and they have easy driver 4.2 in...
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neil
neil.chase
Nov 6, 2009 8:07 am
Good luck on the Job!...
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bdmaple
Nov 6, 2009 8:48 pm
Thanks, I'm now just awaiting their decision, I had a 3rd interview today (three total all this week) and I met with the president. I have his go ahead pretty...
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bdmaple
Nov 9, 2009 6:30 pm
I just registered for the ron wodaski new ccd astonomy book on its site, and it showed some free downloads, which included this. ...
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Reggie
r3gin4ld
Nov 11, 2009 1:44 am
Nice one Dustin on the Job, 3 interview stages has to be encouraging :) I do like the simplicity of the easy driver/motor shields, I had wanted to learn a...
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Reggie
r3gin4ld
Nov 11, 2009 1:50 am
all I could see on that link was the product info, I couldn't see any free open source info for a anything visual basic/opensource.... would like to though....
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bbgobie
Nov 22, 2009 1:58 pm
Hey Dustin, I just joined the group so haven't gone through all the messages, but I'm using an Arduino to drive the stepper in my barn door design. I'm not...
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neil
neil.chase
Dec 16, 2009 6:48 am
I have been stopped from updating anything for over a month....I need family members to stop catching flu for a bit! I am at the moment looking for a way of...
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bdmaple
Dec 18, 2009 1:36 am
What kind of scope do you have? I had to mount a nice nema 17 motor on my orion shorttube-80. Its massive. =) (it is 2"x2"x2") but I fabbed an angle piece of...
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bdmaple
Dec 18, 2009 1:37 am
Hey Neil, and everyone else I have had to put things down too. As it turns out, I shouldn't have applied to orion, long story short, I MAY do some engineering...
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neil
neil.chase
Dec 23, 2009 7:34 am
Dustin, Its a Skywatcher ED80...probably similar or the same as the orion. I want to do a piece of aluminium, as you say, to mount the motor. I get very lazy...
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bdmaple
Dec 26, 2009 8:42 pm
I'll look into that scope and see how i would mount up to it. I have made mine work by first mounting the motor and then mounting/meshing the gears. And...
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neil
neil.chase
Dec 28, 2009 5:14 pm
Thanks for the info dustin, I have a couple of bits of scrap metal and I am going to try to connect the motor to the scope with no gearing...just for testing. ...
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bdmaple
Jan 4, 2010 4:16 am
I wanted the motor to be underneath the scope opposed to hanging out of the side. So I needed to bridge the gap between them and didnt know where to find that...
107
Starjumper
john.meighan
Jan 23, 2010 10:25 am
Hi Guys, Can you advise if I am missing anything from my list to make a motorised focuser:- Software to control the focuser ( Maxim etc ) USB cable Arduino ...
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neil
neil.chase
Jan 23, 2010 2:40 pm
John, what you have should do the job, i have just got another motor controller to try with the Arduino last week (bit of pointless info). The difficult bit in...
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Starjumper
john.meighan
Jan 24, 2010 12:18 am
Hi Neil, Thanks for the quick reply, I basically know nothing about electronics ad proggramming, but I have a question I run eqmod from the laptop to my HEQ5...
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neil
neil.chase
Jan 24, 2010 2:21 pm
Yes you could but you need something to take the TTL signals and translate them into a way of controlling the stepper motor. So you need the Stepper, some kind...
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neil
neil.chase
Jan 24, 2010 2:28 pm
...and an example of the board i am using with the Arduino...in spanish again but if you have any questions let me know. ...
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themos_astro
Jan 24, 2010 11:50 pm
That's what I have done. It's an FTDI cable http://www.ftdichip.com/Products/EvaluationKits/TTL-232R.htm I connected it straight to an Arduino Mini Pro. Look...
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Starjumper
john.meighan
Jan 25, 2010 4:43 pm
Hi Themos, Thanks for that, I was really chuffed that I had thought along the lines of the FTDI cable. Do you have any photos, as I said earlier I am a late...
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bdmaple
Jan 26, 2010 1:13 am
Hey guys, I had the source for the robofocus v4.11. I manipulated it to send my arduino the right commands, and it works fine on my xp machine (desktop)....
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bdmaple
Jan 26, 2010 1:26 am
Neil, Great! you picked up the easydriver!!! I have been planning my adaptation to use one as well. (see my earlier posts.) I like it. its cheap, simple and...
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themos_astro
Jan 26, 2010 11:02 am
I will try to put some pics up on the yahoo group site. If anybody has knowledge of a cheaper USB cable solution, let us know. Themos...
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neil
neil.chase
Jan 26, 2010 11:54 am
Thanks Dustin! I have Friday off so I am hoping to get some coding done....the wife just bought a load of curtains and lamp shades that need putting up so I...
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neil
neil.chase
Jan 26, 2010 11:55 am
Reggie, hope your having a good 2010 so far! Neil...
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bdmaple
Jan 26, 2010 10:41 pm
Do you have any 1/4" (or 6.35mm) ID ruber tubing? And 2 zip-strips (tie-wraps) fit the rubber hose over both shafts and zip-strip them to the shafts. It works...
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bdmaple
Jan 28, 2010 3:22 am
Hey guys, I have a proposal or two. 1. Remove the "steps" handling by the arduino and have the driver handle it and store in the registry. It will increase...
