I think the pins connected together in the image are pins 13 and 14. Notice the placement of the capacitor on the left side when the board is flipped over. Pins 17 and 18 should be nearer to the capacitor, also on the left. Does anyone know which are the proper pins to connect? I'm assuming the correct pins are 17 and 18, and the image is just backwards.
The pins connected together in the image are pins 13 and 14 - and those are indeed the correct pins. The images are correct.
Remember this is the dual 10 connector (not germain to your argument) but use that when
for example referring to: http://www.smpspowersupply.com/connectors-pinouts.html
Pin 17 is COM
Pin 18 is +5V
So if you connect pins 17, 18 you will dead-short your 5V rail and quite likely melt some wires and damage your PUS.
Pin 13 is COM
Pin 14 is #PS_ON
For the finesse - Pin 14 usually goes to the PC front panel power switch. Recall how that works? The PSU is turned on and left on (our big switch near the fan on the PSU). Then we turn on and off using the front panel switch. Another advantage of not reaching around is this is a logic level control so we don't need big wires for that switch.
That pin 14 is pulled high by default, and by grounding it we pull it low.
This tells our PSU "logic" that it always wants to be on - and this is only controlled by the big power switch by the fan.
Hope this helps.
13 and 14 are the correct pins and you're exactly right about connecting 17 and 18 shorting the 5V rail and burning things out (don't ask me why I know that ><). Threeethan fixed the page on April 8th and the current wiring has been working great for me since.
Thanks for the explanation!
How can I find out, whether I have a "recent" version of the CoolerMaster power supply? My Makerbot has been shipped with a CoolerMaster RS 460 pmsr a3 and the fix has not been applied to the motherboard.
Should I solder the pins together in this case
PS: I have the Arduino Mega 2560 Motherboard (if that makes a difference…)
Hi moeppmoep,
I recently got my thing-o-matic and I too have Coolermaster RS 460 pmsr powersupply. But, my motherboard doesn't have a fix (it is v2.5). Were you able to find out answer to your question? Did you end up soldering pin 13 and 14?
Does anyone have anything to share?
Thanks,
Anand
I have the same question and I think the answer :-)
I check the connection off 13 and 14 with my multimeter and have 0 Ohm. Means there is no resistance. Means the two pins must be connected at the motherboard. I think because it's the newer revision 2.5 and NOT 2.4.
So if you had 2.5 you don't need to solder anything. But no guarantee from my side :-)