M3-ATX 125 watt Smart Automotive Power Supply

**RevheadKev** · 04-16-2009, 06:18 AM

What mode are you running your PSU in ?
If you have it in mode P0 then it behaves like a normal ATX PSU and will not send a signal to the motherboard to turn on.

**tobmag** · 04-17-2009, 03:15 AM

Hi.

No Im running in P1 that is recomended, Its working Ok when Ive been running the car for a while and makes a short stop, its starts up as it should but when the voltage is below 11,2 and I start the engine it will not go on when the voltage rises.

BR//Tobmag

**DrLove** · 05-13-2009, 03:39 PM

Hi, I have the M3-ATX and I don't like the way the PSU shut down timings work. If U read the Timing settings documentation U can find this two contradicting explanations of the shut down sequence:

(Page 2)
P1: Sends ON pulse to motherboard when ignition is ON for more than 2 seconds, sends OFF pulse to motherboard 5 seconds after ignition is turned off. Waits another 1 minute and then shuts down 5VSB to conserve battery.

(Page 4 regarding P1)
In this mode M3-ATX sends ON pulse to motherboard when ignition is ON
for more than 2 seconds. After ignition is turned off first time since the PSU running the PSU waits 1 minute in case of the user changes his mind and turns back ON the ignition. If the ignition remains turned off in this extra 1 minute timeout the PSU sends OFF pulse to motherboard after 5 seconds later. As a result in P1 mode the PSU begins to turning off the motherboard after a total time of ~1 minute and 5 seconds.

My M3-ATX uses the second method and I want it to function like the first. I have used the software to reprogram the modes to no avail.

How does your PSU work regarding shutdown?

**Vicinity** · 05-13-2009, 07:51 PM

Does anyone know how I can get a replacement jumper for the M3? I lost mine.

**Balk** · 07-21-2009, 02:52 PM

I'm planning on an all in-dash cpu install so I'm looking at pico-itx sized main boards. Does anyone have a setup they recommend with this PSU (M3-ATX)?

**NOVAK** · 11-23-2009, 10:58 PM

Okay so I have a VIA Epia NX15000G mother board and I was wondering where to install the on/off wires from the M3? I'm assuming the red wire connects to the power on and the black wire connects to the ground?

http://i10.photobucket.com/albums/a1...ovakxx/Via.jpg

**blk02si** · 11-25-2009, 09:43 AM

Yes you would use pin 6 and 8 to trigger the power. What the power supply does is shorts those pins momentarily to simulate the push of a power button.

**podvarak** · 12-29-2009, 04:23 AM

Hi guys, one quick question: can m3-atx`s white remote "anti-thump" wire be used to turn on the monitor together with amp?

**fiscap** · 02-11-2010, 02:33 PM

Originally Posted by podvarak

Hi guys, one quick question: can m3-atx`s white remote "anti-thump" wire be used to turn on the monitor together with amp?

You could do this through a relay. The "anti thump" wire barely produces enough current to turn on most amps - some folks have found it necessary to use a relay for this purpose alone.

**fiscap** · 02-11-2010, 02:50 PM

Does anyone have experience with the 'P4 custom/custom' setting on the M3? I recently purchased a PicoUPS-120 with a sealed lead-acid battery to function as the 12v source for the M3. My initial hope was that I could isolate the M3 from the car's main battery for extended S3 standby - i.e. the small lead-acid battery would eventually die, but I could always start my car on the main battery.

Since the M3 standard settings all have a period of time where the PS is put into 'hard-off' mode, my plan for an extended S3 state on the UPS are null and void. If anyone has tried to customize the settings under the 'P4' jumper config, do you happen to recall if it's possible to disable the 'hard-off' setting or extend it to anything beyond a couple of hours - is it truly custom?