Incorrect position displayed after shutdown and restart.

[Gordon]

Hi Robert,

I have a problem that seems to be intermittent. I'm using a Easydriver with a Nano. Motor is a NEMA17pg27. I've been using this setup for over a year and on occasion I'm seeing the following.

I will be using the scope and finish the night with say a 2453 focus position. On another evening when I set up I notice the focus postion says 5000.
I know based on the position markings that nothing has moved. Again, this is intermittent as most of the time everything works correctly.

Where should I start looking.

Thanks
Gordon

[brownrb]

Do you on occassion run the Windows app and on other times the ASCOMdriver? Or is it just one of them.

A logfile can help.

Generally speaking there are only three ways this can happen,
First
Windows app-should not be possible
ASCOM app-On settings form, under focuser settings, Update on connect is checked [this will show up in a tracelog file]

Second
Windows app-Menu option Extra Settings-Write focuserdefault settings which writes 5000/10000 [this will show up in a logfile]

Third
On startup, the controller cannot read a valid eeprom setting so writes a default setting of 5000/10000 [no way to capture this at present]

Before powering down, I would recommend that you wait 1m from closing the application referencing the focuser to powering down the focuser, giving sufficient time to write focuser settings.

Regards
Robert

[Gordon]

Thanks Robert!

I do use both the Windows app and the ASCOM app however I'm pretty careful to shut one down before opening the other. My settings should be okay but I will check them.

Powering down could be the issue. I typically run everything remote and power is the last thing to happen. However I will do some double checking on everything you mentioned.

Gordon

[brownrb]

Hi Gordon
I have found that sometimes (not often) after updating the ASCOM driver or Windows App some of the settings get stuffed (because I did not use Save/Restore settings before updating) and thus a default to 5000/10000 occurs. I dont recall any other time though

Regards
Robert

Turn logging on. You can delete logs when things are ok, but a log file may help. How intermittent is it?