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Re: #diy #skywatcher #250p Dobsonian Skywatcher 250p goto project #diy #skywatcher #250p

George Cushing
 

Roman Hujer's ESP32 shield has provision for the ESP-01 WiFi module and simplifies the entire process of building a controller with most features supported by OnStep. 



Dew Heater seting

Roman Hujer
 

Dear Howard Could you please explain how the Spam and Zero values work in the DewHater settings ? I couldn't find it in the wiki. Thank you
Roman


Re: Encoder on Wemos Mini Wifi #wemos

András
 

Thanks! 
I attach the pinout of the board to make the info complete, may anyone need it.


Re: ESPMAX3 No Wifi

Seven Jones
 

On Tue, Jul 6, 2021 at 05:46 PM, Drew 🔭📷🚴‍♂️ wrote:
No, too noisy. I run a 12 volt fan at 5 volts, nice and quiet. Don't worry about the PPS, the clock on the ESP32 is just as good. Leave AUX7 open for now.

okay thanks. I will do that too.


Re: Help Requested / Compiiling SmartWebServer

Martin Bonfiore
 

Howard,

Thanks.  That fixed it.  Compiled without an issue.  Now off to test ethernet connectivity.


Re: Help Requested / Compiiling SmartWebServer

Howard Dutton
 

On Thu, Jul 8, 2021 at 10:43 AM, Khalid Baheyeldin wrote:
Maybe something Teensy specific in the code, or the Ethernet code in there.
Because I am able to compile the latest SWS code for an ESP8266 (WiFi) and there are no issues ...
Should be ok now, the NV library within the SWS just needed an update.


Re: Help Requested / Compiiling SmartWebServer

Khalid Baheyeldin
 

On Thu, Jul 8, 2021 at 01:34 PM, Martin Bonfiore wrote:
Note that I successfully uploaded the "old" addon Ethernet server (not the SWS) unto the Teensy 3.2 with no trouble/first try, so it seems to be something about SWS or something I am doing incorrectly. 
Maybe something Teensy specific in the code, or the Ethernet code in there.
Because I am able to compile the latest SWS code for an ESP8266 (WiFi) and there are no issues ...


Re: Help Requested / Compiiling SmartWebServer

Martin Bonfiore
 

Relative to the issue I just posted, I pulled the SWS code this morning fresh from Github.


Help Requested / Compiiling SmartWebServer

Martin Bonfiore
 

Trying to compile SmartWebServer (SWS) for a Teensy 3.2 install for wired Ethernet operation (not wireless).  I am getting errors relating to "NVS does not name a type" primarily but also concern that E2END is not defined.  Note that I successfully uploaded the "old" addon Ethernet server (not the SWS) unto the Teensy 3.2 with no trouble/first try, so it seems to be something about SWS or something I am doing incorrectly.  Thanks in advance for any thoughts.


Re: #diy #skywatcher #250p Dobsonian Skywatcher 250p goto project #diy #skywatcher #250p

Arnaud V
 

thank you for all the informations i see all a bit better now


Re: #diy #skywatcher #250p Dobsonian Skywatcher 250p goto project #diy #skywatcher #250p

Mike Ahner
 

On Thu, Jul 8, 2021 at 11:32 AM, Khalid Baheyeldin wrote:
or can i handly move the scope when all is not powered?
When you have a scope with OnStep controlling it, then all movement should be from OnStep, not manually. Otherwise OnStep will lose track of where it is pointing. But a small number of users add encoders that tell OnStep (via the Wemos WiFi module) where the scope is pointing.
Arnaud, I think you mean when you don't power the telescope, can it be moved by hand. In that case, the answer is yes, maybe. Because you will have motors and gears connected to the telescope with belts, you will find it harder to move the telescope by hand unless you disconnect the motors. You can do that with a clutch system or just remove the belts. Then the telescope will move with your hands, just as it does now.

-Mike


Re: #diy #skywatcher #250p Dobsonian Skywatcher 250p goto project #diy #skywatcher #250p

Drew 🔭📷🚴‍♂️
 

On Thu, Jul 8, 2021 at 12:32 PM, Khalid Baheyeldin wrote:
The ESP32/CNC combination does NOT provide WiFi.
It does provide only Bluetooth.
Although the ESP32 does have WiFi hardware, there is no support in OnStep, because of technical reasons too long to explain here.

If WiFi is needed, then this board is not a good fit.
Not exactly true. Like all of the ESP32 based versions a Wemos mini (with the SWS firmware) can be attached to the SerialB (Serial2) port pins (designated TX2, IO5 and RX2, IO13). Then you would have both Bluetooth and WiFi.


Re: Encoder on Wemos Mini Wifi #wemos

Khalid Baheyeldin
 


Re: #diy #skywatcher #250p Dobsonian Skywatcher 250p goto project #diy #skywatcher #250p

Khalid Baheyeldin
 

On Thu, Jul 8, 2021 at 12:13 PM, Arnaud V wrote:
i m new here with the project of convert my dobsonian skywatcher 250p to goto with onstep.I read almost all of the wiki but i m a bit lost with all of the board and stepper motor. my first idea was mks board l 2.1 +TMC 2209 + wemod d1 mini pro
The MKS Gen-L V2.1 is a cheap board with very little soldering required.
But its microcontroller is very slow, and you may be limited in slewing speeds (but other factors are at play, such as gear reduction, ...etc).
One way to speed up the Gen-L V2.1 is to use SPI drivers: i.e. TMC2130 or TMC5160
That allows a feature called MICROSTEPS_GOTO which can speed up slewing speed.

but no idea for motor (i see everywhere nema 17) because i m total noob with motor and gear ratio.
Best source of info on this is the Dobsonian section of the Showcase page on the Wiki.
There, you will find links to builds, and get idea on what gear reduction ratios are used, and how motion is transferred from the motors to the mount axes.

my second idea was esp32 + cnc to have wifi & bluetooth direclty on the main board.
The ESP32/CNC combination does NOT provide WiFi.
It does provide only Bluetooth.
Although the ESP32 does have WiFi hardware, there is no support in OnStep, because of technical reasons too long to explain here.

If WiFi is needed, then this board is not a good fit.

another question is must i have a shc to move the scope
An SHC is convenient because when you are centering an object in the eyepiece, you don't need to take your eye off the eyepiece to see which button you are pressing. You can use an Android device to do that, but you don't get tactile feedback, so you have to look on the phone's screen to know which 'button' you are pressing. But some people (like me prefer not to have wires around and stick with the phone and Android app. The SHC also has full catalogs of popular catalogs
or can i handly move the scope when all is not powered?
When you have a scope with OnStep controlling it, then all movement should be from OnStep, not manually. Otherwise OnStep will lose track of where it is pointing. But a small number of users add encoders that tell OnStep (via the Wemos WiFi module) where the scope is pointing.


Encoder on Wemos Mini Wifi #wemos

András
 

Hello, can someone share the pinmap to connect axis1 and axis2 A/B type encoders to the Wemos Mini Wifi module?
Thanks


#diy #skywatcher #250p Dobsonian Skywatcher 250p goto project #diy #skywatcher #250p

Arnaud V
 

Hello everybody,
i m new here with the project of convert my dobsonian skywatcher 250p to goto with onstep.I read almost all of the wiki but i m a bit lost with all of the board and stepper motor. my first idea was mks board l 2.1 +TMC 2209 + wemod d1 mini pro but no idea for motor (i see everywhere nema 17) because i m total noob with motor and gear ratio. my second idea was esp32 + cnc to have wifi & bluetooth direclty on the main board.can anyone help me for a choie :D.and an another question is must i have a shc to move the scope or can i handly move the scope when all is not powered?
thank you in advance

nb : capable skill -->soldering,arduino,3d print


Re: OnStep 4.24f Goto bug #configuration

Khalid Baheyeldin
 

"Better" is too subjective.

There are many criteria to be used, for example:
- Requires ordering discrete parts or not (very hard for a non electrically trained people)
- Requires soldering or not (very hard for someone who never soldered)
- Fast CPU or not
- Built for OnStep specifically or generic 3D/CNC board (there will be limitations, one of them is MICROSTEPS_GOTO for non SPI drivers)
- Cost, shipping, customs and taxes
- Availability (not all countries have the same)

If it was me, I would stick with what works (TMC2130 in your case) and never look back, as long as everything else in the board works.


Re: OnStep 4.24f Goto bug #configuration

dominik.ggorski@...
 

The motors are wired in exact same matter. I'm leaving this topic for posterity, it works fine with TMC2130 and that's what I'm using now as the price is same.
I asked if any board is "better" cause lately I ordered too much off fake or not working parts like STM32 or Wemos d1 mini.
I have some MiniPCB in my drawer, I will try it soon. Thanks Khalid!


Re: OnStep 4.24f Goto bug #configuration

Khalid Baheyeldin
 

If you tried both drivers in both axes, and the problem still appeared on the DEC axis only, then it cannot be the drivers.
It may be some soldering issue or motor wiring issues (all of that being unlikely, but can't think of anything else).

The Blue Pill board is good. I used it for a few years.
The only issue is that the STM32 module is slow.
There is a better module that is pin compatible, which is the RobotDyn STM32F303CC.
It is faster and has more flash storage.
But it was hard to get last year. No idea if RobotDyn has inventory now.

There is also the MiniPCB, and the S6.
The former allows MICROSTEPS_GOTO, but the latter only allows it only for SPI drivers (TMC2130 and TMC5160).

Each has pros and cons.


Re: OnStep 4.24f Goto bug #configuration

dominik.ggorski@...
 

No jumpers connected. This is actually really weird but propably some fault for stepper driver. Thanks anyway for your replies.

Can any boards be considered better to STM32 in any detail?

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