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Messages - mramirez

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General Discussion / Re: ST4 Port
« on: September 29, 2019, 20:54:25 »
Hi Tom

1-   Sorry Tom, I was not aware of these connections.
2-   Understood. Taking a look at the link about the fob, is there any chance to know the connections inside the fob with the (ATTiny10) microcontroller?
3-   Ok Tom, I have test what you said and, of course, it works.

Thanks again.


General Discussion / ST4 Port
« on: September 27, 2019, 17:09:32 »
Hi Tom
I have some questions about ST4
1-   In order to use ST4 connector, if I am right, you need to connect JP1 and JP2. What is the purpose of these JPs? Why didn’t you make the footprint of these four connections by default?
2-   On ST4 (1), what is the (IO0) for?
3-   Let say telescope is tracking at sidereal speed. If I connect JP1 (RA+) directly to GND, the telescope would go faster to west? Or do I need any other connection and/or action?
Thanks for your help and your patient.

General Discussion / Re: Skipping steps in AR Motor
« on: September 27, 2019, 16:59:56 »
Hi Victor,
Thanks a lot for your help.
As I said in my post, I do have balanced everything, but it wasn't enought.
I have changed the motor by a NEMA 17 0.9º in AR axis (I have no problem with DEC), with much more torke. I have solved the problem with skipping steps.
As I am new with EQMOM, I am testing everything, mainly autoguiding. At the end I whant to be able to take good pictures.

Thanks again Victor

Ok Tom, understood.

Thanks a lot for your help



Hi Tom.
I have some questions about the subject.
When I had an 1.8º AR motor, and I load the “EQ5-Custom Pulley.conf” file, I got the following Window (first picture). In the message area, everything seams ok.

Now I have installed an 0,9º NEMA17 AR motor. Now the AR axis moves much better than with the NEMA14 motor.
But, when I click on “update”, I get the following window (second picture) with these warning messag-es.
Tom, I don’t understand the meaning of the warnings, could you help me?
What is the “IVal”?



AstroEQ Support / Re: First start EEPROM not responding
« on: September 20, 2019, 19:51:34 »

Hi Duncos. I am not an expert, I have started recently using AstroEQ and, as any newbie, I have got to fight with my own troubles.
By Tom’s leave, I write down some steps hopping they help with your issues. 

1-   Run astroEQ.exe
2-   Comport led blinks
3-   Select a comport
4-   Click on “update Firmware”
5-   If everything goes well, Status led should go ON
6-   If click on “NEXT”, the "AstroEQ Configuration Setup" window should appear.
8-   Click on the Folder icon and select the appropriated conf file
9-   Do the changes that you need, and click on “update”. In each axis.
10-   Click on “Done”, and the conf settings will upload to the AstroEQ.
11-   If everything goes well. EQMOD will pop up, and you should hear some kind of noise showing that motors are connected.

I hope this can help you.


P.S. You did not need to solder the junpers, they are already made in the other side of the board (excep for the junpers to select the motor drivers)

General Discussion / AR and DEC motors move the double
« on: September 18, 2019, 00:31:53 »
Hi everyone
Yesterday my EQ5 with AstroEQ,  a NEMA14 (1.8º) and NEMA17(0.9º), was behaving well. The gotos were good enough and so the tracking.
Today, with no change that I am aware of, although the tracking is ok, the goto goes double the angle than it should, in AR and in DEC.
I am not able to find the problem. Somebody could help me

On the other hand, when I try to Calibrate with PHD2, AR axel does not move at all, so the calibration fails.
Thanks a lot

General Discussion / Skipping steps in AR Motor
« on: September 10, 2019, 17:06:26 »
Hi everyone.
I am having problems with skipping steps in AR motor.
My system is an EQ5 (brand new) and a Reflector 130/900 with only a 5 kg counterweight.
I have installed two NEMA 14 steppers motors.
Everything is balanced.
I have tried to solve the problem increasing the current limit, but as the current goes up, the problem gets better, but not enough.
I have also tried decreasing the goto speed. Again, the problem gets better but it does not disappear.  In fat even at tracking speed the AR motor skips steps, mainly when the counterweight rod is close to the horizontal position.
I have thought in changing the AR motor by a NEMA17.
Have anyone  got the same problem?
Kind regards.

AstroEQ Support / Re: USB not working
« on: September 05, 2019, 23:56:54 »
Hi Tom.
Again, it took me too much time to test your advices. I have been out of home for a while.
I ordered a new set of ICs, and the communication problems are solved, but unfortunately, I can not solve the problems with skipping steps in AR motor.
My system is an EQ5 (brand new) and a Reflector 130/900 with only a 5 kg counterweight. Once everything is balanced, and as the current goes up, the problem gets better, but not enough.
I have also tried decreasing the goto speed. Again, the problem gets better but it does not disappear.  In fat even at tracking speed the AR motor skips steps, mainly when the counterweight rod is close to the horizontal position.
I have thought in opening a new thread regarding the “Skipping steps problem”, and see what others people experiences.  And also in changing the AR motor by a NEMA17.
Kind regards.

AstroEQ Support / Re: USB not working
« on: August 14, 2019, 00:57:57 »
Hi Tom.
I am sorry, I have been traveling and I have not the chance to do anything with the AstroEQ until now.
The problem with the com port seams to be solved. I really don’t know how.
I tried to run the configure task again, and this time the board kept the connection for about 3 minutes, then the com port were lost.
Then I realized that I had to run first the “Update Firmware” before running the “configure”.
After running the  “Update Firmware”, the com port remains on. Then I ran the “configure”, charging the “EQ5-Custom-Pulley.conf” config file. Is this the right one?
Now, when I opened the “Cartes du Ciel”, I can connect with the Telescope (via your AstroEQ), and I can move the Telescope and do some kind of Goto.
Now I am having the problem that I miss some steps in RA, so that, the goto is not precise enough.
I have the EQ5 Skywhatcher mount, and I have bought the NEMA 14 stepper motors, and pulleys and belts you mentioned in this web side.
The torque in AR motor seams that it is not enough. According with your experience, which is the current that should be applied to the motors? I have tried with 1.5A in RA.
On the other hand, do I have to upload the config file every time I turn on the board?
Thanks Tom
Kind regards

AstroEQ Support / Re: USB not working
« on: August 06, 2019, 15:51:52 »
Hi Tom.
On july the 27th I sent you the pictures of the board. Any coment?
Thanks a lot

AstroEQ Support / Re: USB not working
« on: July 27, 2019, 01:45:30 »
Hi Tom.
12 volts are ok, and yes i conected before,
Here I am sending the pictures.

Best regards.


AstroEQ Support / Re: USB not working
« on: July 26, 2019, 23:55:23 »
Hi Tom thanks for your answered.
I have been checking the soldering and the passive components. I have even changed the 7805 (just in case). The Crystals are in the right places.
 Things have changed slightly but not enough.
When I connect the USB, the LED start blinking for more than one minute (LED should blinks forever?) and then remains on and the USB disappears from the Device Manager.
During this minute I open the AstroEQ firmware utility, and click on Configure. The utility tries to read the EEPROM for a while and then fails. While it tries to read the EEPROM, several codes (:021) appears at the bottom of the utility windows.
I have tried to use an Arduino nano behaving as your PIC. I have removed the PIC, and connected TX and RX lines to RX and TX lines of Arduino. And I have connected reset pin to GND on Arduino (this way Arduino should behave as your PIC, I gess).
When I click on Configure, EEPROM can not be read and  I have the same failure.

Best regards

AstroEQ Support / USB not working
« on: July 21, 2019, 16:39:51 »
Dear Tom.
I have bought one of your AstroEQ devices a few days ago.
I have already soldered an connected everything, but I’m having problems connecting the USB.
When I connect the USB to the computer, the LED starts blinking for a few seconds, and the new USB device appears detected in the Windows 10 Device Manager, BUT.
After a few seconds, de LED remains ON (not blinking), and the new USB device, disappears from the Device Manager, making impossible to go on.
Please, I need some help
Kind regards.

I Tom

As I already have an Arduino Mega and two drv8825 from another project, I have to make the deccision if it is better to build the AstroEQ with those items, or buying your ICs and PCB.

I have read somewhere the Arduino clock is worse than yours. Could you tell me if this is true and why?
On the other hand, if I buy your ICs, is it possible update them if you produce a new version of the software?

Best regrads.


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