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Topic: Question on breadboard (Read 2090 times) previous topic - next topic

oojack77

I'm fairly new to arduino. I was just wondering if its possible to connect an LM35 temperature sensor to an arduino board without using a bread board (.ie. just connect the sensor itslef to the board). How might this be done if it is possible?

Any help is greatly appreciated
Jack

Grumpy_Mike

Yes it gets used all the time, google LM35 and Arduino,

See this for starters:- http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1247164198/1

programmer

The LM35 is so simple that it wouldn't be a problem connecting it directly to the arduino board, as it doesn't need any external components to work.

The Vs pin on the LM35 goes to the +5V on the board, GND to ground, and then the remaining pin to one of the data pins.

It probably won't reach on its own, so you`ll need to run jumper wires from the relevant sockets on the Arduino to the LM35 pins.

oojack77

Thanks for the replies!

I also have a NTC thermistor that i'd like to try out. Is it possible to connect this directly to the board also?I have tried this already but it got severly hot after a few minutes...

Appreciate any help
Jack

Grumpy_Mike

Quote
but it got severly hot after a few minutes


It will do if you don't interface it correctly, see:-

http://www.arduino.cc/playground/Main/Kty81-110

and :-
http://www.arduino.cc/playground/Main/InterfacingWithHardware

scroll down to Environmental.

devlinse

Quote
It probably won't reach on its own, so you`ll need to run jumper wires from the relevant sockets on the Arduino to the LM35 pins.


Sorry for jumping in on this, but it is kind of related.  I'd like to make my jumpers a little more robust by adding proper pins to the ends.  Does anyone have a cheap source of pins and a crimp tool?

Maybe I'm looking at the wrong things, but the crimp pins see frightfully expensive for what they are.

Cheers

programmer

Quote
I'd like to make my jumpers a little more robust by adding proper pins to the ends.  Does anyone have a cheap source of pins and a crimp tool?


I use pre made up jumper wires, similar to these:

http://www.adafruit.com/index.php?main_page=product_info&cPath=33&products_id=153

Cheap, and really handy as you can plug them straight into the sockets on the arduino boards, and the other end straight into a breadboard hole. Makes it really quick and easy to hook things up for testing, development etc

Almost every electronics retailer carries them, or you can get them cheap on Ebay.

devlinse

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I use pre made up jumper wires, similar to these:


I tend to buy jumper wire in 100m spools and over the years have made more coax (for those who can remebed 10Base2 networks) and RJ11/45's than I care to remember.  What I'm really after is a reasonably priced crimp tool and the pins so I can make arbitary lengths.

If all else fails though, then yes, they're certainly an option if I can square my own warped ideas about value for money!

Thanks

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