The problem is probably that you cant just use a 'fixed' star. The scope will move, without the guiding, as it would normally to track but the autoguider will not be able to stop it. Moving east/west with an autoguider is achieved by either stopping or speeding up the motor from its normal speed momentarily not driving it backwards / forwards. With my eq6 l found that you cant move it east / west even if you turn off the tracking. You should be able to move it north/south. You need a real star to work properly.Hummer wrote:Hi,
As it is daylight, I am getting familiar with running the program. The autoguider is on my EQ3-2 mount.
I have an artificial star and aimed the auto guider at it while the mount was tracking( moving past the stationary star).
Initially, I used the Window (N,S,E,W) controlles to move the window(containing the red cross and the red X) over the star. Then I zoomed in on the star to about level 4. Then I turned on A-Win and A-Thes. Finally, I turned on Autoguide. The X moved over the star in the window and turned green.
As my mount continued to move, the star moved out of the window and the X turned Red and was centered in the window.
Should I do anything differently?
Depedent on how noisy your mount drive is you maybe able to hear the motor changing as you send the NSEW commands. North and South you should hear the dec motor run, West the RA motor will stop , or slow down, for a second and East the RA motor should speed up for second.Hummer wrote:Thanks for the reply.
Hopefully, we should get a clear night soon and I can give it a try.
I just spotted one change you'll need to makeHummer wrote:Hi,
Thanks for posting the Beta Version. I will give it a try.
You need to use PINS 16,18,22 & 24 NOT GPIOs.Hummer wrote:Hi All,
I am attaching the RPi to my mount. The GPIO for my RPi is shown in the attached image. I do not see GPIO 16.
My understanding is to use GPIO 16, GPIO 18, GPIO 22 and GPIO 24.
Please, help with my problem.
Sounds like the software is working correctly.Hummer wrote:Hi All,
Finally got the Autoguider outside to test.
Once I had a star in view, I did the following:
1) Clicked A-Win
2) Clicked A-Thr
3) Clicked EWI
4) moved the window over the star
I watched as the star drifted upwords. I clicked on North in the Window Move Box and the window moved up over the star again As I continued to watch the star drifted up, on the Telescope Move Box, the North button was turning green and the size of the window slowly grew. Finally the window shrink back and the star had moved up out of the box.
Am I doing something wrong?
Hi ,Hummer wrote:Hi,
For the interface, I used the Digital Relays as you suggested. I also have done the modification to add the ST-4 port. I tested the port with your software (clicking on North and South) and I could feel the stepper motor respond.
Photos of my setup are attached.
Thanks for having a look.
For the ST-4 port, I just followed the PDF from the Shoestring Astronomy site titled,
"Modification of EQ-style Dual Axis Controller".
Seemed straight forwards.
In normal use l would use 2X but during this testing the others may help to exagerate the movements.Hummer wrote:Hi,
Should have time tonight to test the setup and do the "short test".
Which rate switch should I use 2x, 4x or 8x on the telescope mount controller?
Hoping to get this running soon.
Thats a pity, sounds like a handcontroller problem. Did it work OK before you did the ST-4 mod ?Hummer wrote:HI,
Spent last night testing the setup.The result seems to be that when I activiate the EQ3-2 handcontroller Dec positive or Dec negative, the stepper motor rotates the same direction. If I activate RA+ or RA-, the motor stops.
I openedup the box to check the sodder joints and redid any that looked suspect. No Improvement.
I do not know if this is a known bug with the handcontroller.
Could you test the interface first, not that l believe it will be any risk to the controller, maybe just use a multimeter, on ohms, between each output, and switch them from the software.Hummer wrote:Hi,
New handcontroller is ordered. Hopefully, it should be here this weekend. I should have time to do the ST-4 modification so with a clear sky, I may be back to testing the autoguider shortly.