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Author Topic: 0.9 deg stepper on eq5  (Read 4169 times)

velinoff

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0.9 deg stepper on eq5
« on: May 31, 2015, 01:33:54 »
Received the controller Monday! Thanks Tom.
stright away  had to do some upgrade cause I'm using 1.7 amp 1.8 deg nema 17. I've cut two 10x10mm openings on the back panel to suit the heat sinks for drv8825 and increase the current to 1.7amp. Then I  decided to try with  0.9 deg stepprrs. My gears are 144
Worm ratio, 4:1 gear. The setup utility  came up with warning when tried  to use 32microsteps. Something  like iVal too small. I've ignored it. On the test, mount behaved Ok, but when i tried goto  target  in CdC it over shoot a lot. When slewing from eqascom its ok. So decided to go for 16microsteps : everything  works  fine except the point of  using 0.9 deg stepprrs  is defeated.
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TCWORLD

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Re: 0.9 deg stepper on eq5
« Reply #1 on: May 31, 2015, 03:18:07 »
Are you using the latest version of the configuration utility? (There was a new version released a week ago).

Actually you said it was a warning, so you must be ;)

I need to have a look into at, but as I am currently in the states I don't have my equipment to properly test this. I will be back in the UK in a couple of weeks, so I will do some checks then - in the mean time if you use 16ustp mode until I've looked into it.
« Last Edit: May 31, 2015, 03:27:42 by TCWORLD »
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Tom Carpenter (AstroEQ)

velinoff

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Re: 0.9 deg stepper on eq5
« Reply #2 on: June 01, 2015, 01:16:56 »
Thanks Tom, I'm quite happy with current setup although still unable to test on guiding(the weather is rubbish here in London).
The rig is powerful like a tank and once synchronised with astro tortilla puts the targets spot on the centre. In fact it is so powerful that I'm unable to stop it by hand and the worm cradles start to flex  :o .
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