/diy/ - Do It Yourself

>>1305494
i'm shorting the 5v and the power enable pins.

It wasn't meant to handle that high of a current and would certainly fail after an extended period of time either by the pins on the unit itself of melting of the plastic housing. If you want to rig it is possible by joining the two 5v but I would not recc it. Just by a cheap one from newegg or amazon esp for cheap if you buy it used

>hurr do it yourself

Not unless it's dangerous.

I don't quite understand. The power supply is 175w and the pico psu is rated for 180w.

It already works, I'm just looking for a clean solution to have everything work with one power button at the front of the case instead of having to switch the power supply on first and then switch on the pc.

>>1305498
> built to run an xbox, a small footprint PC
> 16A/200 watts is not enough for a media centre.
How do you breathe with all that cock in your face holes?

OP you can permanently connect power sense and 5v for an always on supply.

>>1305515
Yeah I was just reading the atx specs. Do you mean from the power supply I am hooking up the xbox 5v to one of the 5v pins on the motherboard and then the xbox "power enable" to something like "PS_ON"?

>>1305526

no, what the dude was suggesting is you connect the power enable pin on the power brick permanently so it's always on. i concur with this. the alternate way is to permanently connect PS_ON to ground on the ATX connector but this is far from ideal, coz sometimes you wanna put your computer to sleep using the power button, and that's no longer possible.

>>1305526
PS_ON# is active low, you connect it to ground to activate the PSU.

On Xbox PSU you connect PS_ON to +5VSB to enable it, right?

Thus PS_ON# signal going from motherboard to Xbox PSU must be inverted.

Basically you need to connect +5VSB from XBox PSU to your PC +5VSB
And a PMOS or a PNP BJT to invert PS_ON# and supply PS_ON for Xbox PSU.

>>1305604
lol

>>1305498
What high current? It's just a logic signal.

>>1305652
> CPU's don't need heat sinks because it's all just logic signals amirite?
Read and learn.
https://electronics.stackexchange.com/questions/160249/why-does-a-processor-get-hot

The problem is that ATX PSU powers on by setting Power-on pin to 0V while X360 PSU needs to set 5V to power-enable pin.
So would need 2 switches or one 2-pole switch.

https://www.youtube.com/watch?v=uKG1nbuu8Fc
The thing you can do is connect the ATX Power-on pin to GND permanently. Then you can just turn on the X360 PSU and the ATX PSU will start automatically.

Or you could just put a switch on the X360PSU.
http://www.instructables.com/id/the-Brick-PSU/
https://www.tonymacx86.com/threads/mod-an-xbox-360-power-brick-for-use-with-a-picopsu-or-other-12v-needs.112052/

>>1305664
>>1305498
The XBOX is just a PC you retard. Of course it has to handle a high enough current you massive cocksucker.
12V, 16.5A, 200W

>>1305830
in short:
-connect a switch to X360 PSU
-have PC/ATX switch always turned on
-turn PC on/off by turning on/off the X360 PSU

>>1305830
>http://www.instructables.com/id/the-Brick-PSU/
>https://www.tonymacx86.com/threads/mod-an-xbox-360-power-brick-for-use-with-a-picopsu-or-other-12v-needs.112052/
>modding psus

Good way to get an amateur killed

>>1305848
Also for the price and cost of time to do that you could just get a medical PSU and a 4-din socket

>>1305848
He asked a question, I gave him an answer, the rest is his problem.
>>1305851
>DIY
>HURR just buy a new thing

>>1305855
The DIY is plugging in your new PSU

>>1305863
If you are from fucking /g/ maybe.

>>1305830
>https://www.tonymacx86.com/threads/mod-an-xbox-360-power-brick-for-use-with-a-picopsu-or-other-12v-needs.112052/

I've already kinda done this. Except the switch I have is at the end of the cable and just connects 5v to power_enable.

The problem with keeping the xbox psu on all the time is that it has one of those dinky fans that runs constantly, and I prefer it was off when not in use.

I was thinking can I not hardwire the xbox psu's 5v to the +5vsb and it seems PWR_OK on the motherboard supplies 5v when turned on so hardwire that to the xbox psu's power_enable. Or even connect a fan header to the xbox's power_enable?

>>1306035
>I was thinking can I not hardwire the xbox psu's 5v to the +5vsb
no you can't do that unless you want to destroy bots psus

>>1306039
I thought that pin is to supply the motherboard with 5v even when the computer is off.

>>1305830
The funny thing is, I >>1305664 replied to >>1305498 making exactly that point, but I obviously triggered a snowflake enough to have had my post deleted, pic related. I was highlighting to >>1305652 that just because something is running at 5V does not mean it is not eating a shitload of power.

>>1306126

shut up, dude! we dont need internet drama, or a play-by-play of said drama.

>>1306150
Found the snowflake

>>1305494
I just use a relay to short the pins. Just bridge it to a molex, instant on.

>>1306116
http://www.pcguide.com/ref/power/sup/funcSoftPower-c.html
https://electronics.stackexchange.com/questions/91606/using-pwr-ok-to-activate-an-atx-power-supply-automatically
https://en.wikipedia.org/wiki/Power_good_signal
>I was thinking can I not hardwire the xbox psu's 5v to the +5vsb and it seems PWR_OK on the motherboard supplies 5v when turned on so hardwire that to the xbox psu's power_enable.
PWR_OK comes AFTER the PSU is turned on already. You can't use it to turn on a PSU.

If you really need that the X360PSU has to be turned on/off by the PC you need:
-cut off the 5VSB wire from picoPSU
-connect 5V from X360 to 5VSB pin on the MB
-connect a transistor or optocoupler (or a small relay+diode) input between 5VSB and PS_ON pin
-connect transistor (etc.) output between 5V and power_enable

>>1306116
http://www.pcguide.com/ref/power/sup/funcSoftPower-c.html
https://electronics.stackexchange.com/questions/91606/using-pwr-ok-to-activate-an-atx-power-supply-automatically
https://en.wikipedia.org/wiki/Power_good_signal
>I was thinking can I not hardwire the xbox psu's 5v to the +5vsb and it seems PWR_OK on the motherboard supplies 5v when turned on so hardwire that to the xbox psu's power_enable.
PWR_OK comes AFTER the PSU is turned on already. You can't use it to turn on a PSU.

If you really need that the X360PSU has to be turned on/off by the PC you need:
-cut off the 5VSB wire from picoPSU
-connect 5V from X360 to 5VSB pin on the MB
-connect a transistor or optocoupler input between 5VSB and PS_ON pin
-connect transistor (etc.) output between 5V and power_enable

>>1306163
So..... would this work? Apologies for the crappy diagram.

Only problem is that when the computer turns off the xbox psu stays on. Maybe it can be improved?

>>1306825

no, not in the least. there's numerous problems, some of which are...
- one single wire going to switch and pico board. nothing works unless there's 2
- we dunno what the 4 relay contacts are. which are the coils, and which the switches?
- to energize a relay, you gotta provide a voltage and a ground across the winding. there arent any grounds in your drawing, so it's a mystery.
- it looks like you're trying to power the relays from the Power Enable pin and +5V. this is weird, coz to turn on the supply, you will need to short those 2 points, and you cant get power from a short.

anyway, since you're this confused, i'd suggest the best way is two separate switches. you could get a step-on-step-off foot switch for the brick, and the normal switch for the 'puter.

>>1306825

>>1306825

>>1306825

>>1306825

>>1306849
So I redrew the diagram... The xbox psu spits out 5v's when off. When you hit the power button on the front of the case it energizes the 5v relay which shorts the power-on motherboard header, and the 5v continues to the xbox's power_enable to turn it on. The 12v's then powers the 12v relay which then allows the 5v's to permanently flow to power_enable, and then the 12v's continues to the pico psu. I like this solution because it doesn't require modifying the atx connector.

>>1307051
Thanks for drawing this. Is there a preferred solution? I can only really read the first one for now.

>>1307187
>I like this solution because it doesn't require modifying the atx connector.
There's also no option to turn off the XboxPSU. Which makes the whole thing pointless. You would get a better result by just putting a switch between 5V-pow_enable.
>Is there a preferred solution?
The right one would be the best.
But for any of them to work you would need to test if there's always 0V on PS_ON when the PC is on. You just need to measure the voltage between a 5V pin and PS_ON, if it shows 5V then PS_ON is 0V.

>>1307217
Though PS_ON should be 0V since there's no other pin to tell the PSU to turn off.

>>1307187

sorry, it doesnt quite work as you imagine. the problem is that the 12V going to the pico has to go through the coil of the relay first. that'll drop the voltage by a lot, so instead of receiving 12V, the pico gets maybe 1V.