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Re: Orion XT10 Conversion with WEMOS R32 ESP32 and CNC Shield + some questions

Khalid Baheyeldin
 

On Thu, Nov 12, 2020 at 02:51 PM, bukl wrote:
When I start the controller while the telescope is point for example 30° up the controller asumes it´s at 0° and with a limit of -1 I cant move below 29°. To get to real 0° I have to set the limit to -30 move to the real 0° and then press home.
Or am I missing something?
I see now how the limit of -1 is not a good solution.

On equatorial mounts, we have clutches that can be released, and the mount manually aligned to the home position (celestial pole for equatorial mounts), then when the controller is powered on (or the Home Reset button pressed), it is very close to where it should be.

Maybe you should search for how you can implement something similar: a knob or something to engage/disengage the motors?


Re: Orion XT10 Conversion with WEMOS R32 ESP32 and CNC Shield + some questions

bukl
 

When I start the controller while the telescope is point for example 30° up the controller asumes it´s at 0° and with a limit of -1 I cant move below 29°. To get to real 0° I have to set the limit to -30 move to the real 0° and then press home.
Or am I missing something?


Re: Orion XT10 Conversion with WEMOS R32 ESP32 and CNC Shield + some questions

Khalid Baheyeldin
 

On Thu, Nov 12, 2020 at 02:19 PM, bukl wrote:
No, thtat would be fine. -5° could still be safe.
Are you suggesting to move 1°, Set Home and repeat until I´m there?
What I am saying is that you should make the limit for Alt -1 permanently.
Then when you are starting a session, power on the controller, use the Android app
to get the scope pointed to 180 Az, and 0 Alt (nice thing is that you can use a bubble level
for that), then press Home Reset, and you are ready.
One procedure per session only.

No need to set the limit back to something else, as long as -1 is safe.


Re: Orion XT10 Conversion with WEMOS R32 ESP32 and CNC Shield + some questions

bukl
 

No, thtat would be fine. -5° could still be safe.
Are you suggesting to move 1°, Set Home and repeat until I´m there?


Re: Orion XT10 Conversion with WEMOS R32 ESP32 and CNC Shield + some questions

Khalid Baheyeldin
 

On Thu, Nov 12, 2020 at 02:05 PM, bukl wrote:
But to get there I have to adjust the limits. Afterwarts I have to change them back to avoid accidents. This is quite inconvienent.
Would setting the limit for Alt to -1 be still dangerous?


Re: Orion XT10 Conversion with WEMOS R32 ESP32 and CNC Shield + some questions

bukl
 

Thanks for the answers.

Did you try using the Android App to position the scope to Alt 0 Az 180, then press At Home (Reset)?
Yes that seems to work. But to get there I have to adjust the limits. Afterwarts I have to change them back to avoid accidents. This is quite inconvienent.
How is everone else doing this? Do you have stationary setups and drive the telescope home before turning it of?


Re: OneStep on raspberry pi

Khalid Baheyeldin
 

On Thu, Nov 12, 2020 at 12:16 AM, <dhirajranger@...> wrote:
I was thinking of writing all the code from scratch in python or even reUse the C code but yeah the Arduino Libs used will be a major undertaking, I understand these are two very different universe but still wanted thoughts of people who have done this/tried this. from what i gather from all your views it will not be much of a port rather it will be parallel project from scratch. I was under impression some clever hack of running arduino code on  Rpi and pinMapping. Thanks everyone for your input
Two very different worlds: multiuser/multitasking systems (e.g. Linux) vs. embedded real time control (microcontrollers).

The former provides richer environments with many programs running at the same time, but can never run something
that requires microsecond timing, like what is required for motors in OnStep. The latter can do that and that is why we
use them.

For the same reason, you see RPi used alongside microcontrollers in various applications, but not replacing them. For
example, in the 3D printing world, you still have Marlin firmware running on a microcontroller board, because precise
timing and movement is required, but an RPi serves other functions via Octoprint.

The same thing happens in the OnStep world: we have a microcontroller board for motor control, and KStars with
Ekos/INDI, or Stellarmate or ASIAir on an RPi providing additional functions, but not replacing the microcontroller.


Re: Orion XT10 Conversion with WEMOS R32 ESP32 and CNC Shield + some questions

Khalid Baheyeldin
 

Thank you for your writeup. It is now in the showcase page.

On Thu, Nov 12, 2020 at 09:55 AM, bukl wrote:

Home Position

  • ·         It seems that I have to start the controller with the telescope pointing at Alt 0° Az 180°, otherwise I will not be able to align and the limits will be all over the place
  • ·         This is very inconvenient for me since I have to loosen the belts in order to manually move the telescope
Did you try using the Android App to position the scope to Alt 0 Az 180, then press At Home (Reset)?

Offset between OnStep and Stellarium

  • ·         When I tell OnStep to track eg Mars from the OnStep App and then switch to the Stellarium App the circle that shows where the telescope is point is slightly offset from Mars. When tell is to track Mars from Stellarium directly the circle is spot on
  • ·         Since its been only cloudy nights so far I was able tell which of the two apps is right
  • ·         Does anybody know this problem?
I have noticed this too, and don't know why this is.
I did report it here.
One possible reason is that OnStep compensates for atmospheric refraction by default.

When you observe under the stars, can you check again, and post in the link I provided?

ESP32 WIFI
  • ·         The ESP32 has built in WIFI which is not used by OnStep so far
  • ·         Are the any plans to implement this or should I just get an ESP8266?
This is not possible, and will not be implemented any time soon.


Re: MKS Gen L v1.0 + TMC2209 V3 UART problem #mks #tmc2209 #fysetc #uart

Khalid Baheyeldin
 

As Howard said, OnStep cannot use the UART interface.

You can still use the TMC2209, but you are limited to microstepping of: 64,32,16,or 8.
Not a real limitation though, since it covers the range we use it at.


Re: OneStep on raspberry pi

Rafael Barberá Córdoba
 
Edited

ZWO Asair and ZWO Asair PRO both runs on RPI


But they don’t handle hardware directly. I’ve exactly the same setup with my RP4. Think about OnStep as the electronics integrated inside your mount. The ASIAir will connect to your mount, not substitute your mount’s electronics. 


Re: OneStep on raspberry pi

David Tremblay
 

Let the best tool do the task they are meant to do. If you need to control things from a raspberry pi there's a great project called indilib https://www.indilib.org/forum/development/1406-re-driver-onstep-lx200-like-for-indi.html



Le jeu. 12 nov. 2020 à 09:55, Dave Schwartz <Dave.Schwartz@...> a écrit :
If you hoped to use an example of a camera/guider controller on an RPi
as to why a GoTo mount controller could be the same, I hope you also
recognize the irony of that statement.

On 2020-11-12 5:37 a.m., UndCon wrote:
>
> ZWO Asair and ZWO Asair PRO both runs on RPI
>
>






Re: Question on Spiral Search - Android Message

Drew 🔭📷🚴‍♂️
 

On Thu, Nov 12, 2020 at 07:32 AM, Howard Dutton wrote:
Agree it is a bit confusing.  The "." isn't really a decimal point only a separator.
Thanks, that explains it. Being from the engineering world I guess I never thought about it that way. Minor revisions were always 01 thru 99. Now that I think about it that was only for readability.

I am not in favor of purely numeric versions numbers, elegant but not in common usage. Having the minor revision as a two digit number would solve the problem for me.


Re: OneStep on raspberry pi

Dave Schwartz
 

If you hoped to use an example of a camera/guider controller on an RPi as to why a GoTo mount controller could be the same, I hope you also recognize the irony of that statement.

On 2020-11-12 5:37 a.m., UndCon wrote:

ZWO Asair and ZWO Asair PRO both runs on RPI


Orion XT10 Conversion with WEMOS R32 ESP32 and CNC Shield + some questions

bukl
 

Hi together,
I just finished converting my Orion XT10 Dobsonian to a GOTO with OnStep. First of all thanks for this great piece of Software to everyone who is involved in this.
From mechanical point of view, I mostly copied John K.´s built: https://onstep.groups.io/g/main/message/13894
But had to redesign all 3D-Printed parts since I was able to slice his STLs.

Here are some photos of my build:


The Parts I used:
quantity part price/piece € link
2 NEMA17 Stepper with 100:1 Gearbox 32,02 https://www.ebay.de/itm/392172995039
2 TMC2130 6,82 https://www.ebay.de/itm/274430359012
1 GT2 Belt 9mm 1360mm 6,32 https://www.ebay.de/itm/283708953451
1 GT2 Belt 9mm 784mm 5,35 https://www.ebay.de/itm/283708953451
1 WEMOS R32 D1 ESP32 5,73 https://www.aliexpress.com/item/32920335664.html
1 CNC Shield V3 5,8 https://www.aliexpress.com/item/2044795124.html
       
  Sum 100,88  


Although so far I had no chance to use it outside everything seems to be working fine.
Nevertheless, after using it in conjunction with the Android App I´ve got some questions:

 

Home Position

  • ·         It seems that I have to start the controller with the telescope pointing at Alt 0° Az 180°, otherwise I will not be able to align and the limits will be all over the place
  • ·         This is very inconvenient for me since I have to loosen the belts in order to manually move the telescope
  • ·         Is there a way for OnStep to figure out the limits after the alignment? I meat after I pointed it at one star OnStep should be able to figure out at which angle its pointing

Infinite Azimuth

  • ·         The way my telescope is built it is able to rotate an infinite amount of times, but when I tell it to go from Az 350° to Az 10° it turns 340° instead of going the short path of only 20°
  • ·         Can I somehow configure OnStep to allow this?

Offset between OnStep and Stellarium

  • ·         When I tell OnStep to track eg Mars from the OnStep App and then switch to the Stellarium App the circle that shows where the telescope is point is slightly offset from Mars. When tell is to track Mars from Stellarium directly the circle is spot on
  • ·         Since its been only cloudy nights so far I was able tell which of the two apps is right
  • ·         Does anybody know this problem?

ESP32 WIFI

  • ·         The ESP32 has built in WIFI which is not used by OnStep so far
  • ·         Are the any plans to implement this or should I just get an ESP8266?

Many thanks and best regards


Re: MKS Gen L v1.0 + TMC2209 V3 UART problem #mks #tmc2209 #fysetc #uart

Howard Dutton
 


Re: MKS Gen L v1.0 + TMC2209 V3 UART problem #mks #tmc2209 #fysetc #uart

Howard Dutton
 

On Thu, Nov 12, 2020 at 05:02 AM, <scepo_88@...> wrote:
Are you sure ? What is purpose of upper pins then? I watched lot of tutorials people connecting exact same drivers via uart on SKR.1.3 and 1.4 but not on MKS Gen L...
Ok, let me qualify that last statement.  OnStep does not support UART mode for any TMCxxxx driver.

I also have no plans to add that feature at this time.


Re: MKS Gen L v1.0 + TMC2209 V3 UART problem #mks #tmc2209 #fysetc #uart

scepo_88@...
 

Are you sure ? What is purpose of upper pins then? I watched lot of tutorials people connecting exact same drivers via uart on SKR.1.3 and 1.4 but not on MKS Gen L...


Re: Question on Spiral Search - Android Message

Howard Dutton
 
Edited

On Wed, Nov 11, 2020 at 04:23 PM, Drew 🔭📷🚴‍♂️ wrote:
On Wed, Nov 11, 2020 at 05:55 PM, Khalid Baheyeldin wrote:
Maybe with version 5.x we should start putting an explicit leading zero.

So starts with 5.00, then 5.01, ....etc.
That way there is no confusion, and 5.21 will always be more than 5.07.
So you are saying the app was checking for version 4.07 or greater? I am still trying to understand what the logic behind this is. 4.21 is not greater than 4.7 this is what Martin reports in the first post.
Agree it is a bit confusing.  The "." isn't really a decimal point only a separator.

Major 4 minor 7 is < major 4 minor 21.


Re: Question on Spiral Search - Android Message

Martin Bonfiore
 

For some unknown reason I am not getting the needs >= 4.7 message and spiral is working.  I have no clue why since It went from fail to working without changing anything.  I am starting to question my sanity.  One thing I did seem to notice was that the onstep version splash screen on the Android app did not consistently appear...but I can’t swear to this.  At this point my problem is nominally solved and I thank everyone for their help.  


Re: MKS Gen L v1.0 + TMC2209 V3 UART problem #mks #tmc2209 #fysetc #uart

Howard Dutton
 

On Thu, Nov 12, 2020 at 04:10 AM, <scepo_88@...> wrote:
Problem is i dont know how to connect them in UART
That is not supported, stand-alone mode only.

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