Hardware (question) Need voltage from motherboard

[guily6669]

I'm sure there's always airflow inside even if very small so copper will definitely be more capable in transferring the heat and I also already have a few here.

The Fan controller is so that I can use thermal sensors too and then can regulate the fan to whetever I want, also from what I see the PS5 original fan prefer to be dead silent than to actually cool the console because I saw a video of TronicsFix where he replaced the liquid metal for normal compound and the console instead of getting noisy and spin up the fan more, it seems it prefer to be quiet and not much it just shuts down....

 

[Foxi4]

It's more a matter of how much surface exchanges heat with the air, cooling is a function of thermal conductivity, surface area, velocity, volume of air and a bunch of other factors - the copper sinks with shallow grooves are great at the first part, they kinda suck at all the rest. With that said, if you already have some, you may as well install matching ones - they'll help regardless, the memory modules don't need a whole lot of cooling as it is and work perfectly fine when hot. The fan curve is set to minimise fan noise out of the box since that was the main concern with the PS3 and the PS4 - jet engine noise. There's a way to accelerate the fan a bit beyond what the PWM signal dictates, but if you prefer external sensors, go for it. When setting custom curves account for the fact that the core/memory is hotter than the junction or the heatsink. You can do that with boring math, but the easier way is to just tune it until it's comfortable to touch under load. Good luck with the project!

 

[guily6669]

I know all about the stuff, been with PC's since 90's .

Anyway the original fan could ramp up a bit more as it's still pretty silent.

About the memory modules like I said, sadly they are around 95ºC I think tested at the top of the memory chips, inside is melting hot which is way too much. The sensor temps I plan to put one right on top of the chip, but yeah the temp inside is always more.

I guess the memory temps are the reason for some PS5 to get fully corrupted with the memories broken even on the menus, saw a few videos on youtube full of texture corruption...

But anyway If I make a big hole for a fan on the backplate as push out with a tunnel for maximum pressure, the motherboard side of the memories will be like a Tornado inside. Problem will be the dust intakes will push dust inside like nuts and I don't plan to use dust covers (However I still don't know If I'm going for that as most likely will look pretty ugly).

PS: I need is the console.

 

[Foxi4]

I know all about the stuff, been with PC's since 90's .

Anyway the original fan could ramp up a bit more as it's still pretty silent.

About the memory modules like I said, sadly they are around 95ºC I think tested at the top of the memory chips, inside is melting hot which is way too much. The sensor temps I plan to put one right on top of the chip, but yeah the temp inside is always more.

I guess the memory temps are the reason for some PS5 to get fully corrupted with the memories broken even on the menus, saw a few videos on youtube full of texture corruption...

But anyway If I make a big hole for a fan on the backplate as push out with a tunnel for maximum pressure, the motherboard side of the memories will be like a Tornado inside. Problem will be the dust intakes will push dust inside like nuts and I don't plan to use dust covers (However I still don't know If I'm going for that as most likely will look pretty ugly).

PS: I need is the console.

To be honest, I'm still unclear on why you'd install a second fan on the PS5 at all - the fan that's in the system is directionally-agnostic (it sucks air in from both the top and bottom vents and blows it sideways) and unlike in the predecessors, it goes straight through the chassis. This was a problem on the PS3 and 4 (on those systems the bottom side was a bit obstructed), on the 5 the fan already cools both sides of the board. Should you find that you're short on space, you could try just accelerating the fan that's already there, either with your own fan controller or with an accelerator board. The PS3 and PS4 could be fitted with the exact same PCB since at the end of the day, it's just a 12v PWM fan - there's no magic there. If you want to keep the vanilla look, you could just dremel holes for the memory modules, attach those new heatsink, speed the fan up a bit and see if that gives you your desired temps. Your console, your project and your choice at the end of the day, but give the suggestion some thought before you drill the shell of that brand-new beauty.

 

[guily6669]

To be honest, I'm still unclear on why you'd install a second fan on the PS5 at all - the fan that's in the system is directionally-agnostic (it sucks air in from both the top and bottom vents and blows it sideways)...........

I'm not very sure if the airflow on the VRM+memory side of the motherboard has any good airflow because it's all enclosed with the backplate, but maybe I can cut a small opening across near the fan and on the other side as intake so it pushes more air trough.

And yes I will use the dremel, did the same on my PC case and back then on the brand new Falcon Xbox 360 Elite, 1st day I played demos and fully test it, second day I already had testing fans all over the place with the case open and the PC power cable soldered

Anyway below is the design I did on the Xbox360, sadly that's the only picture I can sadly find, they are all in my old nokia N95 8GB which I need to solder the 8GB chip back in place and never did it . I still have the console somewhere as last time I tried it was last year and was fully working but it's already full of dust which looks like crap so I wouldn't take pictures of it all brown ...

ps: But sure I would never go as far on the PS5 because I would never ruin it's curved shapes which would be a hassle to work and I would just ruin it as I'm not that specialist...

 

[guily6669]

Double Post

Does anyone know if the PS5 works fine with the fan pins removed from the socket and controlled fully external?

I have just checked and sadly the fan is 3 pins so no PWM which is sad rather it's controlled by voltage...

Also does anybody know if I solder just the tachometer cable to a fan controller and leave it controlled by the PS5, would it work just to read the fan RPM without altering anything in the PS5 speed controller neither loss of RPM?

 

[Foxi4]

Double Post

Does anyone know if the PS5 works fine with the fan pins removed from the socket and controlled fully external?

I have just checked and sadly the fan is 3 pins so no PWM which is sad rather it's controlled by voltage...

Also does anybody know if I solder just the tachometer cable to a fan controller and leave it controlled by the PS5, would it work just to read the fan RPM without altering anything in the PS5 speed controller neither loss of RPM?

PlayStation fans never had a tachometer pin, just because it's a 3-pin doesn't mean that it's using a tacho. The pins are +12V, GND and a 3.3V PWM signal (you can exceed the rating and supply 5V in a pinch). I would be rather surprised if the PS5 fan was any different, what makes you think it's using a tachometer? Remember, you're not working on a PC - the fan is made custom for the console, it doesn't have to follow the same standard. Given the fact that the same fan accelerators used on the PS3 and PS4 are also compatible with the PS5, I have no reason to believe they've changed how they manage speed control.

As for the fan being controlled externally, if previous Sony consoles are anything to go by, the system won't care if there's a fan connected or not, it's only interested in the temperatures on its sensors. You can run it externally, but there's no reason to do that. It won't care if you supply the signal from the console and the power externally, the two circuits (motor and logic) are decoupled on fans like this.

 

[guily6669]

damn it, that sucks so bad having no tachometer cable, never read on those Sony fans anyway...

But it's good to know at least that it most likely can be controlled externally without the console caring (at least I hope).

Thanks for the info!!

EDIT: Wish there was a way to add a tachometer to the PS5 fan, like ripping the internals of a PC fan with the hall sensors+pcb, but really needed a way of it working from the metal plate and not on the fan as that sadly would also make the fan to not be calibrated and just ruin the bearings (I mean would be pretty cool to have the RPM reading on the screen instead of just temps, but it sadly really needs to be on the spinning fan to get a reading unless there is a way to use a optical sensor that converts into a tachometer signal like a PC fan so that the fan controller could read it).

 

[Foxi4]

damn it, that sucks so bad having no tachometer cable, never read on those Sony fans anyway...

But it's good to know at least that it most likely can be controlled externally without the console caring (at least I hope).

Thanks for the info!!

EDIT: Wish there was a way to add a tachometer to the PS5 fan, like ripping the internals of a PC fan with the hall sensors+pcb, but really needed a way of it working from the metal plate and not on the fan as that sadly would also make the fan to not be calibrated and just ruin the bearings (I mean would be pretty cool to have the RPM reading on the screen instead of just temps, but it sadly really needs to be on the spinning fan to get a reading unless there is a way to use a optical sensor that converts into a tachometer signal like a PC fan so that the fan controller could read it).

It's exactly as you say. You can calculate the approximate RPM with math (take RPM at full speed, then calculate approximate RPM based on duty cycle), you can use a reflective sticker and an optical sensor (this will maintain blade balance) or you can add magnets and a hall sensor to the hub (which will ruin the balance unless you place the magnets just right). Other than a fancy number, RPM gives you no relevant or useful data though. At the end of the day, if the chip is hot, the fan needs to go faster, regardless of how fast it's going at any given moment - in a console environment it's not a necessary measurement, so manufacturers don't implement that extra functionality. If you want to implement your own speed control that works completely separately from the system, you can either A) supply a constant 3.3V to the PWM pin and control the voltage on the positive pin, or B) supply a constant +12V and control the PWM duty cycle signal - that should give you all the flexibility you need, PWM control or DC control, whichever is more convenient for your controller of choice. If you *really* want that number displayed, for whatever reason, I'd just calculate it - it's a simple solution that any small SBC or microcontroller can handle that will give you a "close enough" approximation. A cheapy Arduino could probably control both the PWM and an RPM display with ease and minimal programming.

 

[guily6669]

Yeah with the Arduino I have seen and it's simple, but really wanted it to display on the current small PC fan controller I have.

I mean would be a waste of screen just displaying temps and 0rpm .

I have a tachometer LCD which flickers until it it syncs with the rpm, but I would never put 2 LCDs as its too much crap...

Guess I will have to search more on a way to convert a homemade solution that would output the same twice frequency per cycle of the fan so that the PC fan controller can read it, it's such a big hassle and I'm not very specialist in electronics.

 

[Foxi4]

Yeah with the Arduino I have seen and it's simple, but really wanted it to display on the current small PC fan controller I have.

I mean would be a waste of screen just displaying temps and 0rpm .

I have a tachometer LCD which flickers until it it syncs with the rpm, but I would never put 2 LCDs as its too much crap...

Guess I will have to search more on a way to convert a homemade solution that would output the same twice frequency per cycle of the fan so that the PC fan controller can read it, it's such a big hassle and I'm not very specialist in electronics.

You can simulate a tach signal with a microcontroller, there's loads of results for setups like that on Google, but personally I would scrap the idea and conceal the fan controller myself - it's really not that useful of a measurement.