Thanks Kevin - good suggestion. What you described sounds very similar to what I'm seeing. I'm using a stepper salvaged from a 5 1/4 floppy drive, so I expect...
967
neil
neil.chase
Nov 25, 2011 8:39 am
Adrian, What I was thinking was just to confirm the signals from the Arduino to the EasyDriver are operating correctly. To do this disconnect the Step and DIR...
968
opticalpath
Nov 25, 2011 9:50 am
Okay, Neil, I'll try that when I'm back home later today. That will check that the program + Arduino are generating the right signal pulses into the EasyDriver...
969
chris@...
chris_yesyes
Nov 25, 2011 10:01 am
Hi Adrian, this is exactly how I tested my EasyDriver and stepper before connecting it to an Arduino. So yes, this is a good way to test. The DIR input should...
970
neil
neil.chase
Nov 25, 2011 10:26 am
Adrian, Yes you can tie the GND and then manually pulse the Step by applying 5v. I have fixed the Standalone Limit problem you were having and put the buttons...
971
neil
neil.chase
Nov 25, 2011 10:31 am
Hi, I´ll be updating the Ascom driver after some errors found on the Stand alone. I am still having problems with the inbuilt settings on Visual Basic Express...
972
neil
neil.chase
Nov 25, 2011 10:36 am
Ok, I just tested with the current up higher on the EasyDriver and the single steps now work on mine. I would suggest you have a problem with the...
973
neil
neil.chase
Nov 25, 2011 10:38 am
Chris, I lowered the Delay as you said to 5 and it´s much better....now if we can delete the little bugger I'll be happy! Neil C...
974
chris@...
chris_yesyes
Nov 25, 2011 11:01 am
Neil, I've done a bit more testing last night but got too tired to reply with my findings... ;-) I've put "do {delayMicroseconds(1);} while (Serial.available()...
975
Reggie
r3gin4ld
Nov 25, 2011 6:29 pm
Hi Adrian, I'm a bit late to this party, so it would be useful if you could supply me with some information on your setup, you have an arduino uno, and an...
976
Reggie
r3gin4ld
Nov 25, 2011 6:31 pm
From memory, this is the reason we put the delay in in the first place, I don't think we ever tracked it down but a small delay did the trick. Regards, Reggie....
977
Reggie
r3gin4ld
Nov 25, 2011 8:21 pm
I wonder if the microstepping missing has something to do with the motor.release function?...
978
opticalpath
Nov 26, 2011 7:32 pm
Reggie & Neil, thanks for your help with this. Sorry for the delay in responding .... and for the length of this post! Neil, I agree: the problem I'm seeing is...
979
Christian Guenther
chris_yesyes
Nov 26, 2011 7:38 pm
Adrian, I haven't read it all (yet) but to me it sounds like that stepper doesn't like microstepping... Chris...
980
Neil Chase
neil.chase
Nov 26, 2011 7:40 pm
Pointless comment time... I dont use ms1 ms2 as the default for the board is microstepping enabled. I did start with them connected but then thought it a waste...
981
Christian Guenther
chris_yesyes
Nov 26, 2011 7:42 pm
... 'manually' pulse the STEP input for testing. Is switching STEP to +5v with a tac. switch sufficient? You could write a small Arduino sketch that sends a...
982
opticalpath
Nov 26, 2011 8:24 pm
I think so, Chris; probably my dodgy salvaged motors. I've just ordered one of these from Motion Control Products: ...
983
Christian Guenther
chris_yesyes
Nov 26, 2011 8:56 pm
That is exactly the one I have. Same image as on the ebay listing I bought it from. Chris...
984
Reggie
r3gin4ld
Nov 27, 2011 4:24 am
the min and max on my 4.4 easydriver board are labeled backwards, however, the math is pretty sumple to work out the voltage needed on tp1 to set the current...
985
opticalpath
Nov 27, 2011 10:20 am
Hi Reggie. I used the TP1 pin to set the correct current for the small motor that is marked 0.4A. For the larger 200 step motor, I tried it with the current...
986
Reggie
r3gin4ld
Nov 27, 2011 1:56 pm
Hi Adrian, I haven't tried 6 wire steppers on the easy driver but I am kind of familiar with them. It does sound like you've been through everything that...
987
Reggie
r3gin4ld
Nov 27, 2011 6:39 pm
I got my source code from an older easydriver tutorial, so here is a link to the latest code easydriver tutorial with some test code: ...
988
opticalpath
Nov 27, 2011 8:00 pm
Thanks, Reggie. I'll try that. Yes, I got single stepping to work OK with the Easydriver and Arduino running the stand-alone program .... by setting the 'Set...
989
Christian Guenther
chris_yesyes
Nov 27, 2011 9:29 pm
This would seem to confirm my suspicion that your steppers don't support microsteps, or at least not 8 of them. Chris...
990
Reggie
r3gin4ld
Nov 27, 2011 9:56 pm
I think any stepper motor wired as a 4 wire stepper supports microstepping, it's not a property of the motor but of the motor driver and how it activates pins....
991
Reggie
r3gin4ld
Nov 28, 2011 3:30 pm
Hi all, I'm trying to get some ideas on the types of setup people are using our focuser software on? Specifically, the telescope and the amount of focus...
992
chris@...
chris_yesyes
Nov 28, 2011 3:54 pm
Mine is a Orion Optics UK SPX250 f/4.8 1/10pv Newt on a GC5-GT mount. The stepper is a 0.9 deg / 400 steps/rev 5 Volt stepper (running on a 12V supply). The...
993
chris@...
chris_yesyes
Nov 28, 2011 4:07 pm
Hmmmm, I'm no expert on steppers but I thought they have to be made to be able to hold between real steps. At least that's what I thought. The datasheet for my...
994
Reggie
r3gin4ld
Nov 28, 2011 4:12 pm
Hi Chris, is 19250 steps sufficient? And what is the length of travel in your focuser? Regards, Reggie....
995
chris@...
chris_yesyes
Nov 28, 2011 4:26 pm
It's a rather short low profile dual speed crayford focuser. No idea what the travel is, would have to measure. From visual memory I would say about 10cm...
