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Re: Encoders

Howard Dutton
 

Now another idea, perhaps an ESP32 would be fast enough...

I've added some code to the WiFi Addon so it now successfully compiles for the ESP32.  Not sure if this will work or not and one would have to watch which pins are assigned to the encoders and where they are brought out on the module.

Then hopefully something like this will plug right in:

https://www.ebay.com/itm/MINI-D1-ESP32-Wemos-WIFI-Bluetooth-ESP8266-CP2104-Development-Board-ESP-32S-SE/173514866672?hash=item28664abff0:m:mlg-LNAW6cK2mqOxJ-pVyPQ

Lot of if's.  Also the above module doesn't have the external antenna connection, perhaps that exists but I don't see them on eBay.


Re: New member and new build

Drew 🔭📷🚴‍♂️
 

I am evaluating Fusion360 also. Being a Autodesk product I am always leery. We have a history, i started using Autocad v1.0 on a DEC Rainbow. Like most Commercial CAD products I am finding the leaning curve to be steep. The leeriness comes from the constant scheming. Their old product was desktop (A360 I think) based, Fusion 360 is cloud based. A non-starter for me. Also not a good idea for a forum that wants to be open source.


Re: Question for other G11 owners with Onstep and SHC

Howard Dutton
 
Edited

On Fri, Nov 15, 2019 at 07:52 PM, John Scherer wrote:
Sorry for the delayed reply on this.  I sold this mount to Bryce Brady and was working on making sure the code was the most recent "release" version and in general just making sure things were in order.  He has been in touch with me tonight and says that with the Vref at 0.4v on both RA & DEC, the RA axis is slewing fine, but that the DEC axis is locking up.
There was a bug that crept in a little while back where OnStep would stay in stealthChop during slews for _QUIET mode.  Be sure to update to the latest so that isn't an issue.

I don't have enough information on the exact design and config to comment further other than saying there's lots of OnStep G11's w/NEMA17 directly driving the worms, it's known to work.  I've been using this year and years with various h/w and currently have a MaxPCB2 on my G11 which also works great.


Re: Encoders

Howard Dutton
 
Edited

For an ESP8266 I'd have to say it probably won't keep up with two axes at that resolution.

The Ethernet add-on (Teensy3.2) should do better from what I understand.  That isn't terribly well tested w/encoders but should still be working AFAIK.

Even further out there and never tested, the Ethernet add-on may very well work on the Teensy4.0 which one would think should easily handle the task.


Re: PEC 3D Printers.

Ant No
 

Hmm. Could be right Howard.

Sounds like you've tried to raise interest in this same idea before Arided. Might seem too complex to people who haven't spent time reading about one-step. Dunno.

Yeah, I remember rep-rap when it was still just a group with a mission. Before all the consumer units came out. Too hit and miss fiddly for me back then. Didn't they do well 🙂

Ant


On 16 Nov 2019 01:09, "Arided Shen via Groups.Io" <aridedyak=yahoo.com.tw@groups.io> wrote:
I figured the z axis periodic error in 3DP community for years, but they don't care me much. My wish is that to add the rotatr decoder on axis and count the PE error in time.  After metering the 3DP PE figures, we calculate the FFT and iFFT to let printer move more precession. However, my work still did not success .


Re: New member and new build

Ant No
 

What are your thoughts on fusion 360?

A couple of people have rated it and that stunning G11? mount model was done with it.

I have to decide what to start using and will likely stick with one. I only ever used turbocad back in the day.

Ant


On 16 Nov 2019 00:36, "Drew 🔭📷🚴‍♂️" <drewbolce@...> wrote:
I ordered a kg spool of the Sunlu carbon fiber PLA. Seemed like the best choice. I agree about the source files. As an old special machinery designer I cannot stand trying to use anything I can't rework or tweak. FreeCAD is a good choice. I like that it can convert my 2d drafting  to sketches and then to 3D. Fits my way of thinking better than straight 3D design.


Re: Encoders

John Scherer
 

Howard, I know you have been using a Gurley encoder with one of your mounts LX75?), and I'm wondering what the upper limit might be with regards to encoder ppr.  I've picked up a set encoders for the G8/G11 from Astro Devices that should be here in a few days and I'd love to be able to use them with Onstep, but my worry is the ppr might be a bit much.  I'm not exactly sure which encoders they're using but they are sold for use with the Nexus Digital Setting Circles, and in the manual I found this image,  so its pretty clear they are incremental encoders.


Re: Question for other G11 owners with Onstep and SHC

John Scherer
 

Sorry for the delayed reply on this.  I sold this mount to Bryce Brady and was working on making sure the code was the most recent "release" version and in general just making sure things were in order.  He has been in touch with me tonight and says that with the Vref at 0.4v on both RA & DEC, the RA axis is slewing fine, but that the DEC axis is locking up.


Re: Considering selling my CG11 with Onstep Max

John Scherer
 

I should mention that I did sell this mount and the associated Onstep MaxPCB2 to a gentleman from Oregon, Bryce Brady.  I believe he recently joined this group.  Bryce is now back home with his G11 and I'm now the owner of a much lighter, GM-8, and will be doing an Onstep conversion to this mount as well.  Thanks for a smooth transaction Bryce!


Re: PEC 3D Printers.

Arided Shen
 

I figured the z axis periodic error in 3DP community for years, but they don't care me much. My wish is that to add the rotatr decoder on axis and count the PE error in time.  After metering the 3DP PE figures, we calculate the FFT and iFFT to let printer move more precession. However, my work still did not success .


Re: New member and new build

Drew 🔭📷🚴‍♂️
 

I ordered a kg spool of the Sunlu carbon fiber PLA. Seemed like the best choice. I agree about the source files. As an old special machinery designer I cannot stand trying to use anything I can't rework or tweak. FreeCAD is a good choice. I like that it can convert my 2d drafting  to sketches and then to 3D. Fits my way of thinking better than straight 3D design.


Re: Error uploading SHC sketch

chummee@...
 

Works like magic. Thanks. 


Re: Blew up my teensy

Khalid Baheyeldin
 

On Fri, Nov 15, 2019 at 02:55 PM, Dave Schwartz wrote:
I think I was one of the drivers behind the 'stick with 2.4.2 version' advice because of all the problems that were introduced with the early 2.5.* versions. However my recent testing that I reported, where I had both the 9999 and 9998 command channels and station and access point mode active and in use in the same session, was done with 2.5.2 which performed flawlessly (both OnESP and the supporting current libraries and the 2.5.2 board manager).
I updated the Wiki page for WiFi-Bluetooth to list the versions that are known to work.
Have a glance when you can to verify.


Re: Blew up my teensy

Mathew Ray
 

Yup, touched up the solder joints a bit and cleaned off some flux too. I can connect to the Onstep via WiFi and set locations and such via the Android app! Yay!

I am now just trying to test the stepper motors by attempting to set my location and slew to a star... the light is blinking but not seeing them move...


Re: New member and new build

Dave Schwartz
 

I use the Sunlu carbon fiber PLA. In fact, most of my 16 spools are Sunlu. The CF particles must be quite small because I've never had a clogged nozzle. When not needing the CF, I use their PLA+. When the CF has worn out a nozzle, you'll be able to tell because edges and surfaces will not be as sharp and smooth as when you started with a new nozzle and the drooling/stringing will become noticeable bordering on objectionable. Very easy to change nozzles and quite cheap on eBay. I've never felt the need to try anything other than the 0.4mm brass nozzles.

An OnStep 3D-printing specialty subgroup is a good idea - there are a number of OnStep-specific designs that deserve to have a home. Something that I'd really like to see is that all designs be released with their CAD source files so others can build on them and contribute them back (that's something that bugs me about a lot of Thingiverse designs - no source). I'm partial to FreeCAD myself but OpenSCAD is an option.

On 2019-11-15 4:16 p.m., Drew 🔭📷🚴‍♂️ wrote:
Thanks for the heads up on the Carbon Fibre pla and the need for extra nozzles. I did not know it was available. I should get my 3D printer next week. I am sure I will be asking all kinds of questions about making the various OnStep accessories and general telescope parts. Makes me wonder if another sub-group for OnStep 3D printing might be a good idea


Re: New member and new build

Drew 🔭📷🚴‍♂️
 

Thanks for the heads up on the Carbon Fibre pla and the need for extra nozzles. I did not know it was available. I should get my 3D printer next week. I am sure I will be asking all kinds of questions about making the various OnStep accessories and general telescope parts. Makes me wonder if another sub-group for OnStep 3D printing might be a good idea


Re: Blew up my teensy

Howard Dutton
 

On Fri, Nov 15, 2019 at 01:04 PM, Mathew Ray wrote:
Ah that was it! I can program the esp-01 now that I have 2.4.2 installed.
And now... does it work?


Re: Blew up my teensy

Mathew Ray
 

Ah that was it! I can program the esp-01 now that I have 2.4.2 installed.


Re: Flashing the ESP-01

Khalid Baheyeldin
 

On Fri, Nov 15, 2019 at 01:35 PM, Howard Dutton wrote:
On Fri, Nov 15, 2019 at 10:32 AM, Howard Dutton wrote:
On Fri, Nov 15, 2019 at 10:18 AM, Khalid Baheyeldin wrote:
Yes, the quality is variable. They are also easy to fry.
I've never fried one, and I bet I've flashed more times that anyone on here. :)
Oh, bet u were talking about the Bluepill.
No.
I was talking about the ESP-01, from when I was testing it initially, before the PCB design.
Then you pointed us to the WeMos being 5V, and easier to work with, and me and Dave never looked back since.


Re: Blew up my teensy

Dave Schwartz
 

I think I was one of the drivers behind the 'stick with 2.4.2 version' advice because of all the problems that were introduced with the early 2.5.* versions. However my recent testing that I reported, where I had both the 9999 and 9998 command channels and station and access point mode active and in use in the same session, was done with 2.5.2 which performed flawlessly (both OnESP and the supporting current libraries and the 2.5.2 board manager).

I see that 2.6.1 of the board manager is out and I haven't tried it yet, but I think the advice can be updated to show that 2.5.2 has been successfully tested. Its perfectly acceptable to stay with 2.4.2 unless you need to rebuild for new features  - there's no need to update just for the board manager. A lot of wisdom in the saying "if it ain't broke, don't fix it".

On 2019-11-15 1:44 p.m., Howard Dutton wrote:
On Fri, Nov 15, 2019 at 10:19 AM, Mathew Ray wrote:

It does take a while, not sure what success looks like though,
this is my first ESP-01 flash...

When it uploads there are just lots of dots shown as it goes through the process.

Nothing to do with your trouble at this stage, but you should use the*esp8266 libraries version 2.4.2* the WiFi Addon doesn't work properly with the 2.5 series AFAIK.  I notice that version 2.6 is out and that I have never tried to know if it works again or not.