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Re: New SHC Board design

Jerry
 

I like to have something a little thicker since it also protects the display. I also have a co2 laser cutter so I can make them very easily with a nice finish. 

-Jerry

On Nov 28, 2021, at 12:20 PM, Ken Hunter <kb7hunter@...> wrote:

On Thu, Jan 30, 2020 at 08:36 AM, Jerry wrote:

I have some red plastic ordered and will probably just cut them out on the mill. I can also machine the cases out if people need that. 

-Jerry
Seems like a lot of trouble. I use red film from Amazon and cut with Paper cutter for my SHCs
https://www.amazon.com/gp/product/B01M1HIER8/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&th=1


Re: OnStep Commercial ??

Khalid Baheyeldin
 

On Sun, Nov 28, 2021 at 11:14 AM, Dave Schwartz wrote:
I think we must treat this like Instein and say that, in general, the group is not Sharpstar's firmware support arm. If a vendor wants to package OnStep, that is fine and legal but this group is not able to support them except for some kind souls that may take pity on them. A vendor must have the resources to support the product they sell otherwise they're just stealing people's money.
I agree with this.

We have not seen any Sharpstar employees engaging in the community.
So we may end up with a significant number of people seeing the SHC logo, searching Google and ending up here, where they should have contacted the vendor.

On the first instance of this happening, we should add a FAQ entry to that effect.

Back to trademarks: just because Marlin is doing it differently, does not mean Howard should follow that model.
I have worked extensively with open source projects that did trademark (Drupal, the content management system that used to run the White House, and is now on the NIH, IRS, Home Depot, DocuSign, The Economist, several large universities, and so on ...). They trademarked for the reasons I mentioned, and mentioning now.

If Howard registers the trademark, he has a chance of not letting the name of the project be soiled by subpar vendors and service.  And him licensing the usage of the trademark to vendors (e.g. "Powered by Drupal") will be a cherry on top for some vendors, and a (modest?) revenue stream for Howard after years of putting in the work (and continuing to do so).

Though trademarks need to actively asserted to continue being valid. So it is not a "one and done" thing.


Re: New SHC Board design

Ken Hunter
 

On Thu, Jan 30, 2020 at 08:36 AM, Jerry wrote:

I have some red plastic ordered and will probably just cut them out on the mill. I can also machine the cases out if people need that. 

-Jerry
Seems like a lot of trouble. I use red film from Amazon and cut with Paper cutter for my SHCs
https://www.amazon.com/gp/product/B01M1HIER8/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&th=1


Re: Sky Safari GOTO limits

Robert Benward
 

Vladimir,
The line I posted from config.h are Axis 1 limits, not the horizon and overhead limits.  Axis limits are based on HA.  

I don't agree with your last sentence. If you use only positive HAs, your scope will never cross the meridian.  Switching zeros only works if the software agrees with your interpretation, but I guess that is what we are discussing here.

The HA of the scope (not an object) does not change.  6HA points at the West horizon and -6HA points at the East Horizon.   If you look at +/-1HA, the the scope must transit the meridian to get from one to the other.  If you insist the scope never goes lower that the DEC weights, then you must perform a  meridian flip when moving from the "plus" HA quadrant to the "negative" HA quadrant.

I just got my mount back outside and on the tripod.  I need to diligently perform these measurements, but it's been really cold the past few days.  What I have programmed in right now is +/-90deg.  That means my scope should never point below my celestial horizon.  It gets more complicated when you add in the horizon/overhead limits.  Those seem to be only on the SWS, I could not find horizon limits in config.h  But unlike your scope where you plugged in +/-90, my scope goes over most of the sky.  I have not tried pointing below the NCP.

Bob


Re: Anyone able to get STM32F303CCT6 256 stm32KB Flash STM32 ARM Cortex(R) M4

George Cushing
 

Not exactly ...
303cct.jpg


Re: OnStep Commercial ??

Dave Schwartz
 

The real problem with commercial adoption of OnStep is that Howard's OnStep (and SWS and SHC) is still under such heavy churn that no matter how they've managed to nail jello to the wall and capture a stable version, their customers are going to want to upgrade their firmware at some point. So its inevitable that the vendor is going to have to provide instructions on upgrading the firmware and most of them will come here.

I think we must treat this like Instein and say that, in general, the group is not Sharpstar's firmware support arm. If a vendor wants to package OnStep, that is fine and legal but this group is not able to support them except for some kind souls that may take pity on them. A vendor must have the resources to support the product they sell otherwise they're just stealing people's money.

On 2021-11-28 11:01 a.m., Drew 🔭📷🚴 ♂ wrote:
Marlin firmware is used all across the 3D printing community. It has countless commercial companies using it for their 3D printers just like this company is using OnStep. This use of the Marlin open sourced software has been going on for some time now. If there was a big time issue it would be well known.

The Marlin name is not trade marked.

This use of OnStep was inevitable. I am actually quite surprised it took so long.

This was the only comment on commercial vendors I found on their website. I think it applies to OnStep, especially after the Instein fiasco.

Some companies do a very poor job of deploying Marlin on their hardware. And a dark side of open source is that some vendors fail to honor the terms of our license which requires them to give you the exact Marlin source code for the firmware on your machine. We understand that companies want to be protective of their trade secrets, but our license terms are clear, and the years of work we have put into Marlin is a major foundation of these businesses. If your vendor is misbehaving, send them a polite message to remind them of your rights under the GPL and their obligation as beneficiaries of Open Source software.


Re: ESP32 wireless SHC (wSHC)

George Cushing
 


There may be a need for more filtering. The NCP1117 caps may need attention.

  "The output ripple will increase linearly for fixed and adjustable devices as the ratio of output voltage to the reference voltage increases. For example, with a 12 V regulator, the output ripple will increase by 12 V/1.25 V or 9.6 and the ripple rejection will decrease by 20 log of this ratio or 19.6 dB. The loss of ripple rejection can be restored to the values shown with the addition of bypass capacitor Cadj, shown in Figure 24. The reactance of Cadj at the ripple frequency must be less than the resistance of R1. The value of R1 can be selected to provide the minimum required load current to maintain regulation and is usually in the range of 100 to 200 . C  "

Have fun.


Re: Looking update my BluePill to BlackPill STM32F303CCT6 256 stm32KB Flash STM32 ARM Cortex® M4

Dave Schwartz
 

That one is not pin compatible either (the 6 pins in the bottom right corner). I'm not sure who the manufacturer 'GD' is (we know CKS who made licensed F103 clones that worked). Maybe this is licensed too and might actually work but it is still not pin compatible. The RobotDyn one is the only one we know of that is pin compatible (and hope it remains compatible after they resume production).

On 2021-11-28 4:05 a.m., Kokoro San wrote:
Hello guys I tot I can upgrade bluegill to blackpill, to slove the issue of uploading code or wrong resister thing...I was unable to find anyplace sale BlackPill on Robotdyn website for STM32F303CCT6, but I saw 2 type same model but not sure is same as onstep recommend for replace the old bluepill, bellow I found sale in China taobao website. Are they the same ?


Re: OnStep Commercial ??

Drew 🔭📷🚴‍♂️
 

Marlin firmware is used all across the 3D printing community. It has countless commercial companies using it for their 3D printers just like this company is using OnStep. This use of the Marlin open sourced software has been going on for some time now. If there was a big time issue it would be well known.

The Marlin name is not trade marked.

This use of OnStep was inevitable. I am actually quite surprised it took so long.

This was the only comment on commercial vendors I found on their website. I think it applies to OnStep, especially after the Instein fiasco.

Some companies do a very poor job of deploying Marlin on their hardware. And a dark side of open source is that some vendors fail to honor the terms of our license which requires them to give you the exact Marlin source code for the firmware on your machine. We understand that companies want to be protective of their trade secrets, but our license terms are clear, and the years of work we have put into Marlin is a major foundation of these businesses. If your vendor is misbehaving, send them a polite message to remind them of your rights under the GPL and their obligation as beneficiaries of Open Source software.


Re: OnStep Commercial ??

Jerry
 

The cost to file a trademark isnt terribly high but im not sure it would be worth it.


If nothing else it is a manual on how to use onstep. 

On Sun, Nov 28, 2021 at 7:20 AM Richard Shagam <rnshagam@...> wrote:
I hate to admit it, but that is one heck of a sexy-looking mount. And the price is phenomenal, considering other harmonic drive mounts on the market are ~$8K.  How well it actually works may be another matter.  But more to the point, it certainly is quite a tutorial on how to use OnStep.  Yes, Howard, please trademark the name before it's too late!


Re: Anyone able to get STM32F303CCT6 256 stm32KB Flash STM32 ARM Cortex® M4

Dave Schwartz
 

No, that one is not pin compatible. At first I thought it was just the one with the 3.3V beside the GND in the top left corner (the PCB is set up for the original F103 with two consecutive GNDs there) and that you could work around it but there are other differences if you compare closely.

On 2021-11-28 4:17 a.m., Kokoro San wrote:
Hi guys anyone able to get STM32F303CCT6? BlackPill
Or manufacturer currently is updating the bug on this board....i saw one seller sale on china, izzit same? And how much is one pics?


Re: TMC2130 question

George Cushing
 

If you wire the M0, M1, M2 and M3 driver pins for SPI control per the pinmap;

// Axis1 RA/Azm step/dir driver
#define Axis1_EN             12     // Enable [must be low at boot 12]
#define Axis1_M0             32     // Microstep Mode 0 or SPI MOSI
#define Axis1_M1             33     // Microstep Mode 1 or SPI SCK
#define Axis1_M2             15     // Microstep Mode 2 or SPI CS
#define Axis1_M3           Aux2     // SPI MISO/Fault
#define Axis1_STEP           26     // Step
#define Axis1_DIR            16     // Dir
#define Axis1_DECAY    Axis1_M2     // Decay mode
#define Axis1_HOME         Aux3     // Sense home position
 
// Axis2 Dec/Alt step/dir driver
#define Axis2_EN         SHARED     // Enable pin control shared with Axis1
#define Axis2_M0             32     // Microstep Mode 0 or SPI MOSI
#define Axis2_M1             33     // Microstep Mode 1 or SPI SCK
#define Axis2_M2              0     // Microstep Mode 2 or SPI CS
#define Axis2_M3           Aux2     // SPI MISO/Fault
#define Axis2_STEP           25     // Step
#define Axis2_DIR            27     // Dir
#define Axis2_DECAY    Axis2_M2     // Decay mode
#define Axis2_HOME         Aux4     // Sense home position

Then you should address these options in Config.h

#define AXIS1_DRIVER_IHOLD            OFF //    OFF, n, (mA.) Current during standstill. OFF uses IRUN/2.0                    Option
#define AXIS1_DRIVER_IRUN             OFF //    OFF, n, (mA.) Current during tracking, appropriate for stepper/driver/etc.    Option
#define AXIS1_DRIVER_IGOTO            OFF //    OFF, n, (mA.) Current during slews. OFF uses same as IRUN.                    Option
#define AXIS1_DRIVER_REVERSE          OFF //    OFF, ON Reverses movement direction, or reverse wiring instead to correct.   <-Often
#define AXIS1_DRIVER_STATUS           OFF //    OFF, TMC_SPI, HIGH, or LOW.  Polling for driver status info/fault detection.  Option

Roman Hujer wired them in this manner for his D1 R32 shield (using different pin assignments to accommodate the driver's location).

 


Re: OnStep Commercial ??

 

I hate to admit it, but that is one heck of a sexy-looking mount. And the price is phenomenal, considering other harmonic drive mounts on the market are ~$8K.  How well it actually works may be another matter.  But more to the point, it certainly is quite a tutorial on how to use OnStep.  Yes, Howard, please trademark the name before it's too late!


Re: SWS Tracking rate adjustment

Robert Benward
 

Howard, 
I used PHD2 guiding assistant and it indicated I had a large drift in RA.  I thought this was the place to adjust it.  I will go back and repeat the test run again, confirm my polar alignment, etc..  If it is still off, can I adjust the steps/deg?

Thanks,
Bob


Re: SWS Tracking rate adjustment

Howard Dutton
 

On Sat, Nov 27, 2021 at 06:33 PM, Robert Benward wrote:
Has anyone tried the tracking rate adjustment in the SWS.  I can click either the fast or slower on the settings page but the status pages does not reflect any changes.  Is there a switch for this some in software.
This is normal, it doesn't do what you seem to think it does.  And for 99% of users you don't need to adjust it, so press the rate reset button near the T+ and T- buttons and don't worry about it.  Unless you have an Arduino Mega2560 with ceramic resonator in which case you should make sure you have a PPS source then don't worry about it.


Re: Sky Safari GOTO limits

 

Horizon/overhead limit and axis limits are two independent things. First one is automatically calculated based on time and location, it's adjusted on runtime, and the later is constant. I was refering only to second one and only to RA axis. DEC has nothing to do with it.

On Sun, Nov 28, 2021 at 12:58 AM, Robert Benward wrote:
Config.h:
#define AXIS1_LIMIT_MIN              -90 //   -180, n. Where n= -90..-270 (degrees.) Minimum "Hour Angle" for Eq modes.
#define AXIS1_LIMIT_MAX               90 //    180, n. Where n=  90.. 270 (degrees.) Maximum "Hour Angle" for Eq modes.

May I ask you what happen when you set these values? Because when I do so, my RA axis won't go anywhere and it's in the limit at the very moment when it's only pointing to celestial pole.

If you imagine this constant is an imaginary limit switch, you may look at it in two different ways. One way to look at it is range when switch is on (limit reached) and the other way is to look at it like the range when switch is off (limit not reached). I don't think we are looking at it the same way, although for some cases (like default -180 +180) it is essentialy the same thing.

I imagined this "two zeros" model because it helps a lot when using negative longitude, and when RA is rotating CW. For example, if you have different + and - (say 10-17h), only switching zeros will preserve limits, otherwise they would be also reversed and then you would have 7-14h instead 10-17h.


Re: New SHC Board design

Drew 🔭📷🚴‍♂️
 

Thanks, a lot of good beginner info. Which I can tell I definitely am.  This is quite different from filament printing.


Anyone able to get STM32F303CCT6 256 stm32KB Flash STM32 ARM Cortex® M4

 

Hi guys anyone able to get STM32F303CCT6? BlackPill
Or manufacturer currently is updating the bug on this board....i saw one seller sale on china, izzit same? And how much is one pics?


SWS Tracking rate adjustment

Robert Benward
 

Has anyone tried the tracking rate adjustment in the SWS.  I can click either the fast or slower on the settings page but the status pages does not reflect any changes.  Is there a switch for this some in software.

Thanks,
Bob


Re: My Dobson project

Tomas de Mora
 

I'll test the engines when they arrive, with the current configuration.
I will inform you of the result.

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