Date   

Re: Find Home button move the DEC motor only CCW

jean-francois.harvey@...
 

Ok, thanks

I will double check the DEC limit switch...



Re: STM32 Bluepill problem

andrea tasselli
 


Re: STM32 Bluepill problem

samuel.dera@...
 

I tried STM32duino and Arduino_STM32. Makes no difference for me. I will try to find another STM32 but right now I dont know where to buy the 128K flash version.
Does anyone know a retailer who is selling the 128K version?


Re: Find Home button move the DEC motor only CCW

Howard Dutton
 

Just did a quick test of the latest master branch and it worked properly.


Re: Rotator in master + CNCv3 vs 3.16 + ramps14

Howard Dutton
 

Think this blocking of rotator/focuser movement (registering) when the drivers aren't active is working now, pretty big changes to do it though, was a pain.

Nicer pinmap files for it though... assuming I didn't break anything.

Update to the latest master branch, the ASCOM drivers are ok as is.


Re: Which Stepper

Khalid Baheyeldin
 

On Wed, Oct 21, 2020 at 07:59 PM, andrea tasselli wrote:
I think they were flagged as been acceptable in the Wiki pages, risk wise. 
I don't have first hand experience with them, although I did buy a set, but never gotten around to using them.

So, I can only point you to what the Wiki says on the different models.

https://onstep.groups.io/g/main/wiki/7233


Find Home button move the DEC motor only CCW

jean-francois.harvey@...
 

Hello,

I just wired the Home switches of my CGE today, and now I can use the "Find Home" button.  It seems to work great but I noticed the DEC motor only rotate CCW during the Find Home process. (it works fine during normal operation)

Let say I'm in front of the dovetail....
if the DEC dovetail is at left position...then it will not move at all during the "find Home" process. 
if the DEC dovetail is at right position, then it will first move fast CCW until it hits (and overtake a bit) the home switch....then it should move slowly CW until it reach the home switch again....but it does not move at all.

The RA is working fine, both directions (CW and CCW)

I know this is not a mandatory option, but I find this is a nice feature to have.

Any idea?

Jeff


Re: Which Stepper

andrea tasselli
 

Thanks Khalid and Howard,

Advice much appreciated. So the consensus seems to be on TMC5160 drivers. What about these:



I think they were flagged as been acceptable in the Wiki pages, risk wise. 

Cheers

Andrea

P.S. That mount is awesome!


Re: BME280 weather data

Lloyd Simons
 

Thanks for the update. I updated to 4.18h and 1.11. Now I see this which looks like expected behavior. It now shows Onstep version in the "Currently Connected to:" box.


Now I just need a clear night for a proper test.


Re: Rotator in master + CNCv3 vs 3.16 + ramps14

Howard Dutton
 

On Wed, Oct 21, 2020 at 11:55 AM, Jordi Sese wrote:
prior to the first tracking on, the numbers go on as if the motors were moving, which is not happening... 
I know, it's on my todo list!


Re: Which Stepper

Howard Dutton
 
Edited

On Wed, Oct 21, 2020 at 11:33 AM, Khalid Baheyeldin wrote:
Depending on how much gear is on the mount, you may not even want fast slew speeds, and the giant mount I referred to does that.
I guess start with the TMC5160, since they are versatile (works with all boards, allow mode switching, and runs cool), and then only go for the S109 if you face a problem.
Think that G41 is 432:1 reduction with the steppers directly driving the worms right?

With 200 step that isn't a terribly high resolution per step so I'd use the TMC5160 drivers.  TMC SPI interface driver advantages?  You can set separate standstill, tracking, and goto currents in the configuration file.  You (and OnStep) can get feedback about driver status.  TMC drivers in stealthChop mode (tracking) are essentially silent.  The TMC5160 has a lower heat for a given current than any other StepStick driver and it isn't even close.  The S109 only goes to 32x microstep.  The 5160 is 256x.  It only bad thing about them is the hassle of getting them working (read the Wiki need to cut a pin on it and connect to ground) and the cost.


Re: Rotator in master + CNCv3 vs 3.16 + ramps14

Jordi Sese
 

Yes, now it moves properly. Great!!!
 
Just another less important thing I've seen in v4 when testing this: focuser/rotator only moves when tracking is on for the first time; if intended, this is fine. The fact is that if you press the buttons to move focus/rotator in the web interface prior to the first tracking on, the numbers go on as if the motors were moving, which is not happening... 
 
Thanks a lot for your time and help

Regards from Barcelona,
 
Jordi.


Re: Which Stepper

Khalid Baheyeldin
 

On Wed, Oct 21, 2020 at 02:13 PM, andrea tasselli wrote:
At present I was thinking of using the existing bi-polar motors (hybrid, I believe),
If it was me, I would do that too: saves me the hassle of attaching new motors to the mount, motion transfer to the worm gear or friction gear, ...etc.

which have the following specs:

200 step/rev
Tracking Current 0.7 A
Goto current 1.4 A

They are supposedly as old as the mount itself, so 20 years but they have withstood the test of time, so far. And capable of carrying big loads.

However I’m not precluding changing to a new set if I can fit them in the current set-up and they bring obvious advantages.
That is the best strategy in my opinion: don't try to get everything from the first attempt, and don't let perfect be the enemy of good enough. You can always change things later, depending on how actual performance goes.

Based on what you wrote I’d tend to plump for a pair of TMC5160, as not too expensive to source. Is being a SPI stepper driver such a plus, BTW?
Depends on your board: if your board allows mode switching (Blue Pill, Max/Mini), then an S109 is good too, and have been used by some large mounts (including this giant, which was done before the TMC5160 became available).

If the board is a 3D printer one, then only SPI will allow you to do mode switching for faster slewing.

Depending on how much gear is on the mount, you may not even want fast slew speeds, and the giant mount I referred to does that.
I guess start with the TMC5160, since they are versatile (works with all boards, allow mode switching, and runs cool), and then only go for the S109 if you face a problem.


Re: New OnStep ASCOM drivers

jean-francois.harvey@...
 

Thanks!!

Jeff


Re: Wifi flash issues with latest master on Instein box

"Guilherme Vênere
 

Hi

Like I said, I don't mind keeping this documentation in my Github. I understand the concern in putting this information on the official Wiki, and just to make sure it's said here, I have no connection to Instein at all besides being an owner of one of his boxes who got stranded without support like others. 

But as a user I also don't want to be locked out to outdated software and unable to make simple changes to the config. In my case the box came configured to Southern Hemisphere, and it took me a month to get access to the source code after I got the box. Luckily (i guess) i live in Oregon which was covered in smoke at the time so not much was lost. And from what i see here in the group other users have similar problems and having this option to use the official master branch is a huge help. 

So i want to thank Howard for merging the changes to master, and i will keep the example config and instructions on my Github, this way if someone comes asking here again we can just point them there. I guess it won't make much difference adding this to Wiki because we know people usually don't read docs before asking so the questions would still come :)

I'm working with another member here on setting up his GM8 with Instein, and will document the process and upload this to my repo. I'll send a link later

Guilherme


On Wed, Oct 21, 2020 at 11:13 AM Howard Dutton <hjd1964@...> wrote:
On Wed, Oct 21, 2020 at 11:10 AM, Howard Dutton wrote:
On Wed, Oct 21, 2020 at 11:08 AM, Howard Dutton wrote:
On Wed, Oct 21, 2020 at 11:06 AM, Khalid Baheyeldin wrote:
We don't need to document everything about Instein controllers.
I'm not changing my mind on this.
It's a commercial product, Instein can take care of it
Thinking back to Charles Lemaire's licensing regrets and I understand where he's coming from sometimes.


Re: Which Stepper

andrea tasselli
 

Thanks Khalid,

At present I was thinking of using the existing bi-polar motors (hybrid, I believe), which have the following specs:

200 step/rev
Tracking Current 0.7 A
Goto current 1.4 A

They are supposedly as old as the mount itself, so 20 years but they have withstood the test of time, so far. And capable of carrying big loads.

However I’m not precluding changing to a new set if I can fit them in the current set-up and they bring obvious advantages.

Based on what you wrote I’d tend to plump for a pair of TMC5160, as not too expensive to source. Is being a SPI stepper driver such a plus, BTW?

Cheers

Andrea


Re: Wifi flash issues with latest master on Instein box

Howard Dutton
 

On Wed, Oct 21, 2020 at 11:10 AM, Howard Dutton wrote:
On Wed, Oct 21, 2020 at 11:08 AM, Howard Dutton wrote:
On Wed, Oct 21, 2020 at 11:06 AM, Khalid Baheyeldin wrote:
We don't need to document everything about Instein controllers.
I'm not changing my mind on this.
It's a commercial product, Instein can take care of it
Thinking back to Charles Lemaire's licensing regrets and I understand where he's coming from sometimes.


Re: Wifi flash issues with latest master on Instein box

Howard Dutton
 

On Wed, Oct 21, 2020 at 11:08 AM, Howard Dutton wrote:
On Wed, Oct 21, 2020 at 11:06 AM, Khalid Baheyeldin wrote:
We don't need to document everything about Instein controllers.
I'm not changing my mind on this.
It's a commercial product, Instein can take care of it.


Re: Wifi flash issues with latest master on Instein box

Howard Dutton
 

On Wed, Oct 21, 2020 at 11:06 AM, Khalid Baheyeldin wrote:
We don't need to document everything about Instein controllers.
I'm not changing my mind on this.


Re: Wifi flash issues with latest master on Instein box

Khalid Baheyeldin
 

On Wed, Oct 21, 2020 at 02:00 PM, Howard Dutton wrote:
On Wed, Oct 21, 2020 at 08:36 AM, Dave Schwartz wrote:
product to reduce the spectrum of support issues it may generate.
Lol, yea kicking them here instead.
We don't need to document everything about Instein controllers.
Definitely no need for a full blown board page.

All we need to document is what Guilhereme's fork had, and that is now part of the standard OnStep.
Specifically: highlight the configuration differences from other 'standard' community boards (e.g. RX/TX serial).
And that is about as far as we should go.
Even a FAQ question with a link to where Guilherme documents that is sufficient.