Help with my DIY router power supply

[studysession]

I am trying to install a new controller board that I purchased off EBay and need some help.

Here is a link to show what I exactly purchased;
http://www.cncgeeker.com/index.php?m...&products_id=2

I am not 100% sure how to hook up the power supply. It shows it needs a 12v and a 7v power supply. I have not ran into this before and would appreciate some help. Is the 7v something I actually need and if so can I just get it from Radio Shack?

Here is a picture of the board;


Thanks

[george4657]

I looked at your manual and the 7 volt supply is stated to be a voltage of 7 to 12 volts with a typical 9 volts. This is probably used to power the chips on your board and would require very little power. A simple 9 volt DC power block should be all you need.

The 12 volts is the power to the motors and is rated at 5 to 36 volts at 1 to 6 amps. this depends on the power required by your motors.
Hope this helps

George

[studysession]

You think one 7v power supply would be enough or would I need to get one for each board?
Thanks -

[123CNC]

the manual is a little ambiguous as to how much amperage required if it si per board or per system, it says connect ps to the 'controller.'

It mentions 1A for the >7v (<12). It is unclear if 1A per board, but I would guess for all the boards combined the total supply for logic should be well under the 1A combined.

If you have a 9V wall wort lying around with the 1A output, I would say give it a go, starting with just one axis, power down and add an axis, ... etc. If any board led's are fully lit and remain so as you add boards, than it is fairly safe to guess what they meant.

The power supply to drive the motors is a different story and highly dependent on the motors you plan to use. But using the provided '2.5AMP@36VDC'per axis times number of axis used, you will have the maximum permitted and you will only have to limit the outputs for any motors below the 2.5 A rating. You can likely get away with much less than 18A PS if using all 6 axis, in that it would be quite unusual (or fascinating) to have all drives going 100% at the same time for any duration.

[studysession]

Thanks for the help. Seems anything with the power supplies is where I get very confused.