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XSPC LCD display + Bitspower water temperature sensor fitting

post #1 of 19
Thread Starter 
need some opinions. I was trying to accomplish a supposedly simple (soldering) project where goal was to swap the air temp sensor in stock XSPC LCD temp display with a water temperature fitting. Pretty much just like in this old guide:
http://forums.bit-tech.net/showthread.php?t=165892

To those who don't know what I'm talking about, this is an example of XSPC LCD display with stock air temp sensor:
http://www.jab-tech.com/XSPC-LCD-Temperature-sensor-Blue-pr-4146.html


And this is a sample of Bitspower stop fitting with a water temp sensor (it's very good one actually):
http://www.jab-tech.com/Bitspower-Silver-shining-G-1-4-Temperature-Sensor-Stop-Fitting-BP-WTP-CT-pr-4345.html


I use(d) to connect my temperature sensors straight to motherboard, and it was working fine, but there were two problems with readinfs:
a) couldn't see them easily while e.g. gaming
b) imprecise readings in any software I tried, always rounded to nearest whole degree (e.g. 26C when it was actually 25.6C etc.)
so, I figured it would be nice to have a small LCD display in case with both inlet air temperature (no problem, no mods required) and water loop temperature (failure LOL!)

After following the guide you get a hybrid of both and you should enjoy seeing accurate water temperature on the LCD display, something like this (pic from mentioned guide):


well, I failed. twice.

It seems I have killed both XSPC units the moment I unsoldered the original sensor wires from PCB.
The funny part is that I actually had two different revisions of those (same color) displays, so I am unsure what actually happened as different components on each PCB where near the sensor wiring solder points. either way, both of them are now semi-dead and all they can do is to light up the (blank) display with nothing on it. I tried soldering stock sensor, no luck. I even exposed copper contact points on PCB by scratching nearby lacquer layer thinking the wiring makes poor contact, no luck no matter if I solder wires back in (water temps ones or stock ones) or just touch them to spots, nothing.

On a side note, one of the displays (older revision XSPC kit from xoxide.com) is actually dual color with 3 terminals (and 2 wires to it) and depending how I connect power wires to it, it may glow stock blue or red (discovered by accident) wink.gif

Since it seems like an utter failure on my part with $20 down the drain, I ordered a third XSPC LCD and this time I will simply splice/solder new sensor wires to old ones without touching the PCB.

Has anybody tried to accomplish this *simple* project with a success (or failure)? I am trying to understand what went wrong and can't figure it out. too long to describe all the details, but if there is input in this thread I will surely give more details on my failures wink.gif
post #2 of 19
tongue.gif why not just splice the cables from the sensor to the xspc unit and solder them together?

don't see why you had to solder it directly onto the board
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[ WOMD ] Rainuke
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post #3 of 19
Thread Starter 
Quote:
Originally Posted by kyismaster View Post

tongue.gif why not just splice the cables from the sensor to the xspc unit and solder them together?
don't see why you had to solder it directly onto the board

LOL, you are right and that is exactly my plan for the third unit LOL! to keep it clean looking, I will just open it, cut the old sensor off and solder new wires to old ones and close it up.
However I just can't understand what I did wrong and what that guy from the guide didn't do ... my cheap soldering iron fried the whole PCB or what??

not touching those cheap PCBs anymore (still have the broken ones in the drawer) ... everything almost falls apart when shaken ... had to re-solder LCD display to PCB wiring on first unit (both wires broke off in a few minutes) ... on second unit I had to resolder some component (a diode?) which got unsoldered accidentally because it was close to sensor wire contact point LOL! however things I touched work and still no sensors (any) show up on screen after re-soldering ... been playing with both broken units today for 5 hours, no luck, wanted a clean job and wasted $20 LOL!

just can't understand what exactly went wrong on both (different PCB) units! heat of soldering iron damaged the microchip (brain) in center of PCB? kinda weird. no tracks were damaged, no shorts as far as I can tell, contacts were good (eventually exposed the whole bare copper contacts from under lacquer and soldered to them, no luck) ... and yet both units died in exactly same way, nothing on display (which lights up) neither with stock nor with my sensors (all of them are good, checked).
Edited by feniks - 1/4/13 at 12:52am
post #4 of 19
Thread Starter 
or actually there is also a third even better way to do this. but I would need a 2-pin terminal (like one on motherboard) and solder it to a piece of XSPC sensor wiring on the outside of the box, so I can attach/detach any 2-pin standard sensors I want without ever having to open this cheap device ever again! biggrin.gif

tomorrow, will find some matching pins (or make them from something) and enjoy having a detachable sensor! biggrin.gif ... after I receive the third unit in mail that is LOL!
Edited by feniks - 1/4/13 at 1:00am
post #5 of 19
Quote:
Originally Posted by feniks View Post

LOL, you are right and that is exactly my plan for the third unit LOL! to keep it clean looking, I will just open it, cut the old sensor off and solder new wires to old ones and close it up.
However I just can't understand what I did wrong and what that guy from the guide didn't do ... my cheap soldering iron fried the whole PCB or what??
not touching those cheap PCBs anymore (still have the broken ones in the drawer) ... everything almost falls apart when shaken ... had to re-solder LCD display to PCB wiring on first unit (both wires broke off in a few minutes) ... on second unit I had to resolder some component (a diode?) which got unsoldered accidentally because it was close to sensor wire contact point LOL! however things I touched work and still no sensors (any) show up on screen after re-soldering ... been playing with both broken units today for 5 hours, no luck, wanted a clean job and wasted $20 LOL!
just can't understand what exactly went wrong on both (different PCB) units! heat of soldering iron damaged the microchip (brain) in center of PCB? kinda weird. no tracks were damaged, no shorts as far as I can tell, contacts were good (eventually exposed the whole bare copper contacts from under lacquer and soldered to them, no luck) ... and yet both units died in exactly same way, nothing on display (which lights up) neither with stock nor with my sensors (all of them are good, checked).

hmm. good luck! I wish to see the results, I might do this for my res.
[ WOMD ] Rainuke
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[ WOMD ] Rainuke
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post #6 of 19
post #7 of 19
Thread Starter 

nice find biggrin.gif
will keep it in mind for future for sure biggrin.gif

for now, I already have the Bitspower stop fitting in my loop tho (was using it with motherboard header), I just want to connect it to the XSPC display that's all wink.gif
Edited by feniks - 1/4/13 at 11:03pm
post #8 of 19
Thread Starter 
.
post #9 of 19
Thread Starter 
received new XSPC blue LCD from jab-tech, awesome price and very quick shipping. sleeved power cables and went the shortest path from there, cut off the stock sensor and soldered stock black wires to the black wires of my Bitspower sensor (installed in the loop), put black heatshrink over it, works perfect biggrin.gif

Finally I can see the air intake temps (red at top) and water loop temps (blue below):

thumb.gif

my biggest joy is that those XSPC displays show decimals, unlike the software polling motherboard temp sensor headers (was always rounding up to nearest whole degree) ... and so I learned I have quite efficient water loop with delta (water to ambient) of around 0.5C on average at idle biggrin.gif

Finally will be able to see all that under load too without opening some crappy monitoring apps on desktop!
Edited by feniks - 1/7/13 at 7:07pm
post #10 of 19
If you would rather disaplay those LCDs in the front drive bays instead of through the side window, you could use this.
http://www.performance-pcs.com/catalog/index.php?main_page=product_info&products_id=28824

Otherwise, nice job!


Monte Sliger
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