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Re: sky planetarium does not connect.. help please

asirio <asirio.x@...>
 

Hi, thanks for your response.
No, I connect via bluetooth, but I tried serially and it also disconnected.
The problem I have is that there is no type of error message, just the second it connects, a message appears that says "unknown step rate axis1 and axis2", I don't know if it will have anything to do with it.


Re: Steppers with Planetary Gear boxes

Khalid Baheyeldin
 

On Fri, Aug 6, 2021 at 09:49 AM, <pcboreland@...> wrote:
You suggest micro stepping down to this level. I was  concerned about accuracy and holding power. For the Dec axis I suppose this is not such an issue?
The sweet spot that the vast majority of OnStep users are at is: 1/32 microstep.
A small percentage use one step off on each side (so 1/16 and 1/64).

Using extreme microstepping (1/128) is not something that is commonly done
because of exactly what you said: torque and precision. Although, if one is
autoguiding, that will take care of things anyways.


Re: Steppers with Planetary Gear boxes

Peter Boreland
 

George,

You suggest micro stepping down to this level. I was  concerned about accuracy and holding power. For the Dec axis I suppose this is not such an issue?

Peter


Re: LX200 OnStep control software

Chad Gray
 

Guess I should say I use Indi on Raspberry Pi for the Indi server.  I plug all of my devices Celestron CG5, ZWO1600, QHY guider, ZWO Focuser into the Pi.

Then I connect to the Raspberry Pi indi server with my laptop running Kstars/Ekos.  I can control all of my devices and the images stream to my laptop in about 5 seconds of download time.

Chad


On Fri, Aug 6, 2021 at 9:35 AM Khalid Baheyeldin <kbahey@...> wrote:
I am using KStars/Ekos as well, on an old laptop (Dell E6410, 14" display 1440x900,
Core i5 M520 @ 2.4GHz). I use Xubuntu, which is the simplest desktop distro. Still
on 18.04 LTS. That CPU was introduced 2010, and last production was 2012. The
laptop is still plenty fast with an SSD though.

A laptop will always be bulkier than a Raspberry Pi, but also faster and has a display.
And I find that using Jasem's PPA repositories is more stable than what people report
with AstroBerry and such.
With a display, I can operate the mount from the laptop, unlike a Pi.
I can also review the images, and colour stretch them from the command line.

Just two nights ago, we had a smoke free night, though the sky was not the best.
I packed the mount and went out of the city and was able to capture all four Messier
nebulae in Sagittarius: the M17 Swan, M16 Eagle, M8 Lagoon, M20 Trifid. All are
single 5 minute exposures, colour stretched.

It was the first time I tried PHD2 multi star guiding, and it worked incredibly well
with 1 second exposures with RMS of 0.6" - 0.7" instead of the usual 1.2" that I got
regularly before. PHD2 is from Patrick Chevalley's repository (same author of
CdC/SkyChart). So nothing to compile locally, and pretty stable.

My workflow is not typical though. Unlike most astrophotographers, I don't prepare
a sequence and leave the mount unattended since I don't stack. I am content with just
a couple of single exposures. Instead, I look for what objects are up, and get a 60 second
test exposure, and assess if I should get the 5 minute ones or not.


Re: LX200 OnStep control software

Khalid Baheyeldin
 

I am using KStars/Ekos as well, on an old laptop (Dell E6410, 14" display 1440x900,
Core i5 M520 @ 2.4GHz). I use Xubuntu, which is the simplest desktop distro. Still
on 18.04 LTS. That CPU was introduced 2010, and last production was 2012. The
laptop is still plenty fast with an SSD though.

A laptop will always be bulkier than a Raspberry Pi, but also faster and has a display.
And I find that using Jasem's PPA repositories is more stable than what people report
with AstroBerry and such.
With a display, I can operate the mount from the laptop, unlike a Pi.
I can also review the images, and colour stretch them from the command line.

Just two nights ago, we had a smoke free night, though the sky was not the best.
I packed the mount and went out of the city and was able to capture all four Messier
nebulae in Sagittarius: the M17 Swan, M16 Eagle, M8 Lagoon, M20 Trifid. All are
single 5 minute exposures, colour stretched.

It was the first time I tried PHD2 multi star guiding, and it worked incredibly well
with 1 second exposures with RMS of 0.6" - 0.7" instead of the usual 1.2" that I got
regularly before. PHD2 is from Patrick Chevalley's repository (same author of
CdC/SkyChart). So nothing to compile locally, and pretty stable.

My workflow is not typical though. Unlike most astrophotographers, I don't prepare
a sequence and leave the mount unattended since I don't stack. I am content with just
a couple of single exposures. Instead, I look for what objects are up, and get a 60 second
test exposure, and assess if I should get the 5 minute ones or not.


LX200 OnStep control software

Chad Gray
 

Hello, i have mainly been using the KStars/Ekos software to control my OnStep telescope.

I am curious what other people use?  I do astrophotography so acquiring images while controlling the mount would be very useful for me.

Thanks!
Chad


wanting to the reverse the mount

koal01
 

Hi all,
Hoping most of you are enjoying nice skies.
I have a manipulation question, a few days ago i was about to image an object at the zenith but the camera was very close to the mount, the camera was at the west side of the mount.
I started imaging anyway regretting one hour later not having reversed the telescope on the mount to prevent it from touching the mount and complete the imaging session.
I was far from the merdian so i did not want to launch a meridian flip, not sure by the way that the command would have been accepted by Onstep...
There is the SYNC_CURRENT_PIER_SIDE_ONLY  parameter in the config file but i have never use it, may be that one would help ?
Whas is the operation i should have done or what you do in my situation ?
Thanks 
Koal01


Re: Adding an optical encoder to a dual shaft stepper motor, does onstep hardware/software support this?

George Cushing
 

For PEC all you need is a Hall effect sensor, about a buck.


Re: Steppers with Planetary Gear boxes

George Cushing
 

There are 25714.2857 0.14"s in a degree (3600/0.14). So why don't these work?
Xnumbers.jpg


Re: Steppers

George Cushing
 

Set the DMM to Ohms.
connect the probes to any two wires.
If there is no reading, move one probe to another wire. 
If there is no reading, move the probe to the remaining wire. 
Record resistance.

Usually Red and Blue are the ends of one coil and Black and Green the other.
Polarity in such cases is 
Black A+
Green A-
Red B+
Blue B-


Re: sky planetarium does not connect.. help please

 


Re: Steppers with Planetary Gear boxes

Pete
 

I have used OMC Online Stepper motors with a planetary gearbox.  I used them on an 8" Dobsonian telescope I built.  https://photos.app.goo.gl/Mev4PmVaqpaH7Usp1

I ended up using the high precision motors since the cheaper ones developed quite a bit of backlash after a year or so of use.  So far the 50:1 Precision Planetary motor has performed well.

I too have a G11 mount and I too am moving to OnStep with it.  My plan is to use 09. degree NEMA 17 motors and TMC5160 stepper drivers at 64 microsteps.  This should result in 24,600 microsteps per degree.  Here is where I am today with this G11 to OnStep Conversion today.  I used a new set of Losmandy Oldham Couplers to join the motor to the worm.  I only finished this today and have not even painted the mounting plates yet.  However it does seem very stable and solid.

I am still waiting some parts to arrive s


Re: Adding an optical encoder to a dual shaft stepper motor, does onstep hardware/software support this?

Peter Boreland
 


Re: Adding an optical encoder to a dual shaft stepper motor, does onstep hardware/software support this?

Peter Boreland
 

Robert,

There is a closed loop solution using Clearpath motors but there are expensive. If the goal is to correct PE I do not think these h


Re: Steppers with Planetary Gear boxes

Peter Boreland
 

Robert,

Mount is a G11.

I'm planning to direct drive both the Dec and Ra worms via a rigid coupler.  On the Losmandy forum I've shown the benefit of using a step size less than  0.56" leads to much improved guiding performance for the Dec axis.  This was achieved by replacing the optical encoder from 265 to 1024. I want to achieve a step size of at least 0.14", so was thinking  inline gearbox would be best way to do this. I was hoping to find a harmonic gearbox but have had no luck. As long as software can cancel out the backlash all should be good I think. 

For the Ra axis 0.56" seems to work just fine with minimal advantage going to a smaller step size. My focus is on removing high frequency noise I plan to use a high res clear path motor for a close loop solution. It has a built-in 6400 optical encoder providing 0.56" step size. The input is step and direction so will not need a stepper driver. 


Re: OnStep driver issues

villem989@...
 


Re: OnStep driver issues

Dave Schwartz
 

If Windows 10 won't install the drivers automatically, maybe you need to get them from here https://www.silabs.com/developers/usb-to-uart-bridge-vcp-drivers

On 2021-08-05 3:36 p.m., villem989@... wrote:

Hello, I bought a second hand Losmandy G11 with OnStep ESP32 goto kit already installed. However I cant get the OnStep to talk with ASCOM / SGP. I feel that Im really stuck so any help would be a great help.

Im running Windows 10 PC with Sequence Generator Pro and ASCOM Platform 6.5SP1. I have installed drivers from here: http://www.stellarjourney.com/index.php?r=site/software_telescope <http://www.stellarjourney.com/index.php?r=site/software_telescope> and I have tried latest Beta and all of the older versions avaiable at that page (1.50 and 2.0.6). The device itself is powered correctly with 12v power supply and I have tried multiple USB cables too with no success.

Im unsure what to do next, as Windows doesnt recognize the OnStep controller. In device manager it only shows up as CP2102 USB to UART Bridge Controller with a yellow ! mark. I have tried to run diagnostics too but Windows cant solve the problem on its own and only states that the device doesnt have any drivers.


Re: Onstep total beginner question #EQ3 #bluepill

Francois94
 

Yes , design comes from Frank in that topic : https://onstep.groups.io/g/main/topic/my_skywatcher_150p_on_an/83327227?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,120,83327227
I just made some minor changes to improve stability as the RA mount is only fixed


OnStep driver issues

villem989@...
 

Hello, I bought a second hand Losmandy G11 with OnStep ESP32 goto kit already installed. However I cant get the OnStep to talk with ASCOM / SGP. I feel that Im really stuck so any help would be a great help.

Im running Windows 10 PC with Sequence Generator Pro and ASCOM Platform 6.5SP1. I have installed drivers from here: http://www.stellarjourney.com/index.php?r=site/software_telescope and I have tried latest Beta and all of the older versions avaiable at that page (1.50 and 2.0.6). The device itself is powered correctly with 12v power supply and I have tried multiple USB cables too with no success.

Im unsure what to do next, as Windows doesnt recognize the OnStep controller. In device manager it only shows up as CP2102 USB to UART Bridge Controller with a yellow ! mark. I have tried to run diagnostics too but Windows cant solve the problem on its own and only states that the device doesnt have any drivers.


Re: Cnc V3 and SHC Problems

George Cushing
 

Terry, I'll assume you are using Branch manager ESP32 1.0.4. A couple days ago I started having similar issues with a MaxESP32 I was testing. My experience was with OnStep 4.24g.

The MaxESP32 was configured with a D1 mini Pro, LV8729 drivers and the SHC32 (ESP).

When powered, the ESP32 would not fully boot to OnStep. At least I would get no status 1 LED PPS signal, the SHC would not connect and gave the connection warning - coordinates error. The motors would not operate even though auto on had been selected. The D1 mini Pro did connect with the ESP32. 

I assumed that ESP 32 1.0.4 had become scrambled and removed it and installed Ver. 1.0.6 and flashed one ESP32 with it. Then I reinstalled 1.0.4. The reinstall did not change anything.

A ESP32 with 1.0.6 installed booted, established communication with the SHC, motors were operative, but the D1 mini Pro (flashed with 2.7.4 did not connect with the ESP32. D1 mini flashed with ESP8266 3.0.0 connected. And D1 mini Pro flashed with 3.0.0 prevented the ESP32 from booting. Removing it from the PCB and repowering resulted in a good boot and SHC and motor operation.

There are a couple of more recent revisions to 3.0.0. I'll try them and see what happens. Seems odd that anything would change in the old ESP managers that would stop 1.0.4 from working with 2.7.4.

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