If you want to be controlling the rpm of the radiator fan, then you will need to monitor the coolant temperature, the best way to do this is with a t piece connector. Drill a small hole big enough to fit a temp probe but small enough for it to be a tight fit, (I recommenced the placement below) then...

Just to clear something up with this, If you use physically switching electromagnetic relays, switching a 240v supply , you will almost certainly run into huge problems with the display. This is due to the emf radiation caused when the contacts are broken inside the relay. The solution is to use a s...

Yep , sorry it executed fine that time , thanks for your help

Yep , well i tried both , the one that sets the default and the one that is meant to change it instantly .

Is there a forth parameter you have to include , because whenever i try and execute the command the text just appears on the display and nothing changes

Found out what the problem was , i was using a rather large relay and it was causing EMI when opening and closeing , switched to a solid state one and everythings fine :D. However somehow during the process GPO's 5,6,7 went very strange , they now turn themselves off when set to on and on when set t...

Yep it was fried , ran a very thin trace of thermaly conductive ink around it and everythings back , thanks .

Suddenly my mx4 has stoped powering up off the floppy connector , the high power GPO's still work , but the display has to be connected to a USB port and windows has to be loaded in order for it turn the GPO's on to there power on defaults . Is there any way of fixing this , or will i have to RMA th...

Excellent , i can set the defaults now

Thanks Tom !!

Still very strange with the GPO's latching with the relay, have you heard of anything like this happening before ?

Hmm it may help but there in no file / folder on my eCD called uproject , the cd version i'm using is 3.1 .

External as in it has standard usb plugs on each end , i'm running it from my laptop for testing . It seems the interference problem with the display was a one off as i havn't been able to reproduce it . However , there is still a deffinate problem with the GPO's and the relay . I set the up button ...

Ah , ok , yes i found around 19hz works best but there is still a deffinate clicking coming from the fan :( . I just wanted to see if i could use a capacitor to smooth out the pulses and convert the output to a steadyish voltage . I'm having huge problems now though , whatever i do i can no longer a...

Could be the mb is supplying a standby supply to the usb ports (i know some do) .

Just wondering whether i needed a diode across the gpo in reverse , to protect the unit from back EMF when it's connected to a relay . (I've done it already to be safe , just wondering whether i needed to ...

I have a 2500 rpm panaflo fan connected to one of the fan headers . At stock the fan is 41DB so i was hopeing to reduce it's speed using pwm . However when i set different frequencys for the gpo , there is an audible sound from the fan , so even when its running quite slowly you can still here it . ...