LM35 temperature project.

[green]

Hi there,

Anyone know how to connect LM35 directly to computer parallel port or serial port and using programming language like C++ or VB to read the temperature value ? Thks alot.

green :idea:

 

[upand_at_them]

No, because you can't. The LM35 outputs an analog signal and the parallel and serial ports are digital. You need an ADC, or a PIC with an ADC, to convert the signal to digital.

Mike

 

[Boris]

Hi there,

Anyone know how to connect LM35 directly to computer parallel port or serial port and using programming language like C++ or VB to read the temperature value ? Thks alot.

green :idea:

Try visit www.parallax.com.You can get good information how connect LM355 & ADC and PIC controller.

 

[Tilman_Bosch]

I agree with what the replies above, due to LM35 is outputing the voltage level, so it needs a converter. I just visited this website yesterday, may be it will help. it is the topic to read the LM35 from remote computer.
www.geocities.com/bagtool/adc_activex.html

Tilman. :idea:

 

[adamthole]

Hi there,

Anyone know how to connect LM35 directly to computer parallel port or serial port and using programming language like C++ or VB to read the temperature value ? Thks alot.

green :idea:

Try visit www.parallax.com.You can get good information how connect LM355 & ADC and PIC controller.

Could you give us a more direct link to this? I've searched through all kinds of their PDF's and haven't found anyhting about that temp sensor. I would like to point out also, that Parallax is a great company and has great documentations (available for free) on tons of things.