Gt2560 - plugin power supply for logical part only

[TM-234]

Hi, I am using a ATX PSU to power my 3D printer, I power direclty my two externals Mosfets from ATX PSU, one for heatbed and one for hotend.

QUESTION ; to power only logical part of the board, I am looking for to know wich side of the dual power feed I need to plug in... as show on my image... is it side A or side B ? Many thanks in advance.

[attachment=0]Power GT2560.JPG[/attachment]

[_kaktus_]

If section A - has an electrical transition to section B - it does not matter. The rest (section A+ B+) is analogously.
However, it is important to connect a set of wires.

[TM-234]

Sorry I don't get it, are you saying, although my hot end and hotbed is powered directly from my ATX psu, still I need to connect 2 X 12V on the board? In the future, I will power my extra fan directly from my ATX psu.

[TM-234]

Error

[_kaktus_]

Can you check whether pin A- is connected to pin B-
And whether pin A- is connected to pin A+

[TM-234]

Here is the image from the back of the board.

[attachment=0]Capture.JPG[/attachment]

[_kaktus_]

Beautiful photography but it does not bring anything.

To check the connections, you can use a multimeter with the continuity test function.
You can also check the connections in the wiring diagram if you have one.

[Gingko]

Maybe this diagram can help you.
http://www.geeetech.com/wiki/images/d/d ... evA%2B.pdf

[TM-234]

Thanks for your help Gingko!

[_kaktus_]

Bravo Gingko.
I love such hot details.

The diagram shows that it is impossible to separate the power supply as a colleague would like to do.
I place a clipping.
[attachment=0]wycinek_zasilanie_GT2560_vA+.png[/attachment]

Regardless of whether it connects the cable to the A+ or B+ pins, the whole controller is powered.
Therefore I would still use all the pins.