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UtComp PRO voltage error ?

Posted: Wed Jun 05, 2019 12:30 am
by 1337htune
Hi all !

Sorry for my English.

I have an UT Comp Pro.

I just make test on desktop with regulated power supply @ 13.8V
And all wire unpluged and connected to nothing.

When i plug the USB and check the voltage with software, i see all value showing random value.
On the LCD too.

Here is the screen/rec:

https://image.noelshack.com/fichiers/20 ... 001021.jpg
https://www.youtube.com/watch?v=2tbO18Z ... e=youtu.be
https://www.youtube.com/watch?v=yVvk4ga ... e=youtu.be


I have NTC sensor from reveltronics but i try to connect, value a totally abnormal.

What i do wrong ?

Thanks for any help.

Re: UtComp PRO voltage error ?

Posted: Wed Jun 05, 2019 11:23 am
by ArT
With unconnected inputs you are measuing voltage in air (they are very sensitive) just connect AdcX inputs to voltage signals and it will be stable.

NTC sensor should be connected to AdcVccX and second wire to ground.

Re: UtComp PRO voltage error ?

Posted: Wed Jun 05, 2019 9:15 pm
by 1337htune
Perfect, it work ! I have confilt in software (NTC1 was assigned to two IN)

New ask:

I have OEM Water Temp sensor with 2 Wire (Like NTC)
One wire is ground
Second is 20°C -> 3V and 80°C -> 1V

I must use NTC input AdcVccX ? or can i use AcdX ?

If AdcX, what to choose for Water Temp ?
http://prntscr.com/ny2vcw

Is it possible to change the name of the sensor instead of User1 / User2 ?


Thanks !

Re: UtComp PRO voltage error ?

Posted: Thu Jun 06, 2019 9:24 am
by ArT
Connect it to AdcX and select NTC2, then in NTC settings (settings -> advanced -> ntc) assign "Engine temperature" to NTC2
During calibration (viewtopic.php?f=28&t=58) use NTC(U) sheet

You can't change User1/User2 labels, but in UTCOMP-PRO you can change U1/U2 icons:
viewtopic.php?f=28&t=54

Re: UtComp PRO voltage error ?

Posted: Fri Jun 07, 2019 9:48 pm
by 1337htune
Perfect !

Thanks for help, and sorry for this noob ask but software is no really user friendly :)

Thanks again