Pls Help - Electronic Circuits Projects Diagrams Free

pushban · 29th April 2007, 11:48 PM

I need to build a temp sensor in the range -5 to +40.What i am thinking is choose a LM34 chip and connect to an opamp.And through the amp again i have to connect the analogue output to an ADC and then connect ADC out to a serial connection which must log to a PC.So can someone pls help me to build this circuit.
So if i'm choosing a wrong chip can u advice me the right one and also give some detail how to build...THANKS.

Russlk · 30th April 2007, 02:30 AM

To use this forum effectivly, you need to draw a schematic and submit it for comment.

**Nigel Goodwin** · 30th April 2007, 11:36 AM

Quote:

Originally Posted by pushban

I need to build a temp sensor in the range -5 to +40.What i am thinking is choose a LM34 chip and connect to an opamp.And through the amp again i have to connect the analogue output to an ADC and then connect ADC out to a serial connection which must log to a PC.So can someone pls help me to build this circuit.
So if i'm choosing a wrong chip can u advice me the right one and also give some detail how to build...THANKS.

That application calls out for a PIC, and is a nice simple project.

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29th April 2007, 11:48 PM	(permalink)
pushban	Pls Help I need to build a temp sensor in the range -5 to +40.What i am thinking is choose a LM34 chip and connect to an opamp.And through the amp again i have to connect the analogue output to an ADC and then connect ADC out to a serial connection which must log to a PC.So can someone pls help me to build this circuit. So if i'm choosing a wrong chip can u advice me the right one and also give some detail how to build...THANKS.

30th April 2007, 02:30 AM	(permalink)
Russlk	To use this forum effectivly, you need to draw a schematic and submit it for comment. __________________ see my website: www.geocities.com/russlk