Power for SATA ?

[Lars Juul]

Hello,

Does the wandboard provide power for the SATA disc, or shall I use a extra power supply for that ?

Regards,

Lars

[Zoom_h2]

Hi Lars,

you have to use a extra power supply. 

The Board needs for a normal boot up to 800 mAh, so if you do some more work for the board I think the power is to small.

The other think is that the board has no connector, and some older HDU need 12V too.

regards

Zoom

[pc99]

what kind of power supply do i need for a ssd drive? is it possible to use some kind of usb2sata
converter? or maybe use the same 5V power supply which is used for the wandboard itself?

[jth...@gmail.com]

You will need a 5V supply for your SSD.  I would not recommend trying to share the wandboard 5V supply.  Use a separate one.  I have access to SSDs from three manufacturers.  The SanDisk Extreme is labelled 5V 1A; the Samsung is 5V 1.7A; the Crucial is 5V 2A.  I went with the SanDisk and dropped into one of our local thrift stores where I found an LG 5V 1A cellphone charger.  Cut off the plug, soldered the wires to a standard four pin PB molex cable and plugged that into a molex->SATA power cable.  On standard molex red is 5V, yellow is 12.  In any case, $0.50 for the charger, $1.25 for the molex cable, $2 for the molex->SATA cable.

Have fun!   Joe

[pc99]

 

thanks a lot joe!

i have already bought a samsung ssd.
so what i need is a 5V/2A power supply and a sata cable.
can i just buy something like this?
http://www.cooldrives.com/ep.yimg.com/ca/I/cooldrives_2069_39287899.jpg
and connect the +5V to with the red cable and GND with the black one in the middle?
plug the cable in the ssd and the data cable on the other end in the wandboard.

[jth...@gmail.com]

Yes, something like that pictured will work.  The white plug end is the molex connector I refer to.  Connect the power supply "hot" wire to the red wire and the ground side to the black one right next to the red.

I connected the data side using a right angle SATA cable and did not find an integrated solution like this one.
The SSD should have a label attached stating its power requirements.  A 5V 2A supply should be more than enough for any SSD.  Double check your drive to see whether the 2A is required.  The "bigger" supplies may be harder to find.

All the best,   Joe

[Martin Wild]

Hi, Yes this cable will do fine!

I soldered red + black from the sata power-cable to the solder points of my wbquad power-plug and bound it with some hot glue . ;) not the prettiest solution , but with this i need only one Psu,and one power plug at the outside of my self build case.
I have no issues until now with this, and with hdparm enabled the hdd spins happily up or down as i need it for my  wbquad running 24/7.

Regards, Martin

[pc99]

sounds good martin! i would rather go with 1 power supply instead of two separate.

 

what kind of power supply are you using? the samsung ssd needs 1.7A, should i get something around 4A?

[Martin Wild]

To be honest , i am using some cheap-ass psu I took from an old Usb 2.0 hub doing just 5V 2.0A :-) I am running with a 1TB Seagate Momentus HDD.
Ive started to experiment with A 4A Psu but i needed it elsewhere and replaced it with the small one.
But dont let yourself get fooled! Ive had another cheap Psu before that "should" do 2.5A and my (Cubieboard) board froze every day once. so dont just believe whats written on the cover, measure the output!!.

Regards, Martin

[Martin Wild]

Oh, Forgot, Right now i am using the cheap 2A Psu on my Wbquad not the cubie....

[plug...@p10link.net]

Does the wandboard provide power for the SATA disc, or shall I use a extra power supply for that ?

The wandboard does not have a connector for powering a SATA disc. Therefore if you want to run both drive and wandboard off the same power supply you will probablly need to splice some connections.

What you need in the way of a power supply depends on what type of drive you are hooking up. Laptop drives tend to only need 5V while desktop drives tend to need both 5V and 12V. The SATA power connector also has pins for 3.3V but very few drives need it*.

Convention in PC wiring is that 5V is red, 12V is yellow and 3.3V is orange but I have seen exceptions to this rule.

I use a 5V 3A wall wart of unknown origin I had lying arround to power both my wandboard quad and a 2.5 inch laptop disk. It seems to work fine though it gets bloody hot. To wire it up I grabbed a molex to sata adaptor I had hanging arround, chopped the molex connector off and spliced it into the cable from the wall wart.

* the only ones I'm aware of being some 1.8 inch SSDs, i've never seen a 2.5, 3.5 or 5.25 inch drive that needed it.

[Lars Juul]

Great.

Thanks :)

/Lars