Setting the current level on a A4988 Driver board correctly.

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Hopsing
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Joined: Tue Mar 03, 2020 3:04 am

Setting the current level on a A4988 Driver board correctly.

Post by Hopsing » Wed Apr 01, 2020 4:06 am

How do you set the proper current for the a4988 driver board. I know there is a variable resistor for adjusting the current on the board. Do you want to unplug the stepper motor connector on the GT2560 V3.0 mother board prior to setting the current level, so you won't damage your stepper motor? I also, want to know how you determine the proper orientation of the driver assembly to plug into the mother board. I know that the 2560 board has blue and black connectors and the a4988 drivers that came with the original board are blue and black, and gives to a method of know how to plug them in. The drives I have ordered the plugs on the driver are both black. Which pin is Vcc and which pin is ground on the GT2560 mother board? I am sorry I have so many questions and so little knowledge about this subject. As always thanks. Hopsing ;)

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William
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Re: Setting the current level on a A4988 Driver board correctly.

Post by William » Wed Apr 01, 2020 9:50 am

Hi, Can you provide pictures of your driver board
Driver board replacement should be performed when the printer is off
The motherboard and driver board insertion colors should be consistent.
-Keep your mind and try to test it. :)
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Hopsing
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Joined: Tue Mar 03, 2020 3:04 am

Re: Setting the current level on a A4988 Driver board correctly.

Post by Hopsing » Wed Apr 01, 2020 11:58 am

Ok here is a closeup shot of both sides of the driver board in my GT2560 v3.0 mother board. William do you line up the blue pins to the blue pins on the motherboard when plugging them in? Tht is the logical thing to do.
Attachments
driver board bottom image.jpg
driver board bottom image.jpg (438.65 KiB) Viewed 5656 times
driver board image - top.jpg
driver board image - top.jpg (421.8 KiB) Viewed 5656 times

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William
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Re: Setting the current level on a A4988 Driver board correctly.

Post by William » Wed Apr 01, 2020 12:05 pm

yes, match it.
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

Hopsing
Posts: 25
Joined: Tue Mar 03, 2020 3:04 am

Re: Setting the current level on a A4988 Driver board correctly.

Post by Hopsing » Wed Apr 01, 2020 12:43 pm

What should the voltage be set to on the variable resistor?

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William
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Re: Setting the current level on a A4988 Driver board correctly.

Post by William » Wed Apr 01, 2020 1:40 pm

Hi, you can refer to this:
A4988 测量位置.jpg
A4988 测量位置.jpg (192.77 KiB) Viewed 5648 times
Increase voltage clockwise
Decrease voltage counterclockwise.
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

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