and you do still have the english version of technical which will serve you well!
English version
English version
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flyway97
It's our honor to serve for you,sincerely hope we can deal with you next time.
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Djrema
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w3drk
If anyone in the states want one, I'm selling my SBASE v1.2. It's been modded with stable oscillators (I'm the one who discovered the initial issue), and the DRV8825s are forced into fast decay mode to allow the use of low inductance steppers with 24v, so no need to mess with diodes. In my opinion mixed decay on the DRV8825 is useless...
I was using this board on a 24v Kossel 250 with 0.9deg steppers. After modding to fast decay mode it's nice and smooth and no problems with up to 300mm/sec moves...which with 0.9deg steppers is pushing the 100MHz MCU.
Flawless condition and rock solid stable. $50 PayPal shipped anywhere in the US and its yours.
I'm really disappointed with this board. Everything installed, edge version running and all seems ok but...
Im having horrible, I mean really horrible high pitch noise coming from the motors. Would you mind to share how you forced to fast decay mode?
I suspect is coming from the drivers. Tried different settings, tried 1/16 and nothing.
Has anyone else found a solution for that?
Cheers,
Raph
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chris33
well i have mine running at 12v and mine seem ok but I'm use to noise working with cncs all day but i believe its noiser at 24v, theres a mod im sure there is if you google it changing the decay mode
That's great to hear. Especially the part of not wanting to commit suicide ;)Quote
Djrema
Thanks Billi3. Tested on 1N5408 and worked. Eliminated 95% of the noise. There is still some, but barely noticeable - That doesn't make me willing to kill myself any more.
Appreciate that.
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Billi3
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Djrema
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w3drk
If anyone in the states want one, I'm selling my SBASE v1.2. It's been modded with stable oscillators (I'm the one who discovered the initial issue), and the DRV8825s are forced into fast decay mode to allow the use of low inductance steppers with 24v, so no need to mess with diodes. In my opinion mixed decay on the DRV8825 is useless...
I was using this board on a 24v Kossel 250 with 0.9deg steppers. After modding to fast decay mode it's nice and smooth and no problems with up to 300mm/sec moves...which with 0.9deg steppers is pushing the 100MHz MCU.
Flawless condition and rock solid stable. $50 PayPal shipped anywhere in the US and its yours.
I'm really disappointed with this board. Everything installed, edge version running and all seems ok but...
Im having horrible, I mean really horrible high pitch noise coming from the motors. Would you mind to share how you forced to fast decay mode?
anyone with a physical picture of the cuircit they made for the diodes as im rubbish at looking at diagrams and find it easier to copy form a physical one thanks
I suspect is coming from the drivers. Tried different settings, tried 1/16 and nothing.
Has anyone else found a solution for that?
Cheers,
Raph
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chris33
well i have mine running at 12v and mine seem ok but I'm use to noise working with cncs all day but i believe its noiser at 24v, theres a mod im sure there is if you google it changing the decay mode
W3DRK probably used this method, but I think you are looking for this solution, because neither fast decay and mixed decay mode aren't a complete solution...Read through the blog, but take your time (and probably a couple cups of coffee ;) )
To make a long story short one should create a circuit with several 1N5404 or 1N5408 diodes for every axis
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w3drk
If anyone in the states want one, I'm selling my SBASE v1.2. It's been modded with stable oscillators (I'm the one who discovered the initial issue), and the DRV8825s are forced into fast decay mode to allow the use of low inductance steppers with 24v, so no need to mess with diodes. In my opinion mixed decay on the DRV8825 is useless...
I was using this board on a 24v Kossel 250 with 0.9deg steppers. After modding to fast decay mode it's nice and smooth and no problems with up to 300mm/sec moves...which with 0.9deg steppers is pushing the 100MHz MCU.
Flawless condition and rock solid stable. $50 PayPal shipped anywhere in the US and its yours.