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Author Topic: Bridging SJ 1 & 2  (Read 2300 times)

Steelfixer

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Bridging SJ 1 & 2
« on: July 28, 2018, 11:10:52 »
Having troubles getting the motors to run properly.
I read that I should have bridged the SJ 1 & 2 points on the board.
Can someone please clarify what I need to do.
I am trying to run 8 wire Nema 23 motors wired in series.
Thank you
Graham.
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TCWORLD

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Re: Bridging SJ 1 & 2
« Reply #1 on: July 28, 2018, 12:13:28 »
Simplest thing to do is to either solder a piece of wire between the two pins, or form a blob of solder connecting them.

Kind Regards,
Tom.
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Tom Carpenter (AstroEQ)

Steelfixer

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Re: Bridging SJ 1 & 2
« Reply #2 on: July 28, 2018, 12:35:08 »
Thanks for the reply Tom.
Which 2 am I suppose to be bridging.
Is it the 2 holes with the block between them.
As in the Red connection I have drawn.




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TCWORLD

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Re: Bridging SJ 1 & 2
« Reply #3 on: July 28, 2018, 13:47:53 »
They are labelled for which driver you are using. The labels are placed next to the arrows showing which tow pins to connect.

For the DRV8824/5 and A498x drivers, you are correct, follow the thick box.

The DRV8834 drivers required a different wiring so I had to add the jumper to enable support.
« Last Edit: July 28, 2018, 13:49:26 by TCWORLD »
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Tom Carpenter (AstroEQ)

Steelfixer

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Re: Bridging SJ 1 & 2
« Reply #4 on: July 28, 2018, 14:18:38 »
Hi Tom.
This is getting more and more confusing as we go.
Driver for what ????
I down loaded the driver Zip file from this site.
How do I tell what driver I have.
Thanks
Graham
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TCWORLD

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Re: Bridging SJ 1 & 2
« Reply #5 on: July 28, 2018, 14:40:15 »
Motor drivers I mean - the little circuit boards that plug in to drive the motors.
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Tom Carpenter (AstroEQ)

Steelfixer

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Re: Bridging SJ 1 & 2
« Reply #6 on: July 28, 2018, 14:48:59 »
Thanks Tom
I used the ones you advise in the spec sheet.
8825
So I need to bridge out what I marked.
Many thanks for your help
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