Temp displayed constantly?

**Skipjacks** · 12-27-2004, 09:39 PM

I'm going to be installing OBDII reader software soon. Before I did the whole computer thing I had a little computer that displayed the outside air temp.

Now I know the OBDII reads the air temp and sends that info to all the code reader programs for display on screen. But is there a way to extract JUST that temp data so that it displays on my screen all the time? Perhaps on the taskbar or someplace I can see it no matter what other programs are or aren't running?

**NiN^_^NiN** · 12-27-2004, 10:40 PM

You could hook up a temp sensor or the orignal sensor and hook it to the PC through serial or usb and just make a small program to stay in the taskbar

**Skipjacks** · 12-28-2004, 12:19 AM

Originally Posted by NiN^_^NiN

You could hook up a temp sensor or the orignal sensor and hook it to the PC through serial or usb and just make a small program to stay in the taskbar

No actually I couldn't do any of that stuff. Hence me asking if anyone else could make a program for me. haha

**Iamthehor** · 12-29-2004, 12:21 AM

Your outside temp display is probably not connected in any way to the engine computer(Some newer CAN vehicles may make this statement false, im not up to date on that yet). Intake air temp(IAT) is different than ambient most of the time due to it being in the engine compartment and moving.

**Skipjacks** · 12-30-2004, 03:00 PM

Originally Posted by Iamthehor

Your outside temp display is probably not connected in any way to the engine computer(Some newer CAN vehicles may make this statement false, im not up to date on that yet). Intake air temp(IAT) is different than ambient most of the time due to it being in the engine compartment and moving.

Oh, well that's a kick in the teeth to my idea.

There's still got to be a way to extract that ambiant air temp data from the sensor to the computer. There HAS to be.

**Paradigm_Guy** · 12-30-2004, 03:10 PM

Although the car has a temp sensor, I don't think it's an OBD2 sensor, so I don't think that an OBD2 port reader would be able to display this. Anyone know for certain that an OBD2 port scanner can display ambient temp?

**Skipjacks** · 12-30-2004, 03:19 PM

Originally Posted by Paradigm_Guy

Although the car has a temp sensor, I don't think it's an OBD2 sensor, so I don't think that an OBD2 port reader would be able to display this. Anyone know for certain that an OBD2 port scanner can display ambient temp?

It depends on where exactly that sensor is too. Our both our cars the intake is right behind the drivers side headlight next to the grill. If thta sensor is in the airbox then the read it gets should be close to ambiant. If the sensor is closer to the manifold, it'll be much much hotter.

**Iamthehor** · 12-30-2004, 03:19 PM

You'd be better of taking the temp sensors signal and processing it via the serial port or replacing it with one of your own. theres a thread in HW development that has a link to a schematic and software.......
Time to learn some VB

**Skipjacks** · 12-30-2004, 03:23 PM

Originally Posted by Iamthehor

You'd be better of taking the temp sensors signal and processing it via the serial port or replacing it with one of your own. theres a thread in HW development that has a link to a schematic and software.......
Time to learn some VB

I don't even know what VB is, let alone being ready to do it! haha

**Paradigm_Guy** · 12-30-2004, 03:25 PM

Originally Posted by Skipjacks

It depends on where exactly that sensor is too. Our both our cars the intake is right behind the drivers side headlight next to the grill. If thta sensor is in the airbox then the read it gets should be close to ambiant. If the sensor is closer to the manifold, it'll be much much hotter.

Our sensor is in the driver's side brake duct, it's a yellow and grey probe.