LED Bargraph?

If I a have a 0 to 5 volt signal coming out of small hand-built gaussmeter
(ok those of you who have read my earlier posts know I built it for
amateur ghosthunting, but I am also seriously interested in learning
electronics, this is getting fun since I used to do it a bit when I was a
teenager), is if hard to somehow eliminate the use of a voltmeter to read
the voltage and somehow add a Bargraph LED to the breadboard circuit so
that the voltage (0-5v) lights up the LED bargraph component?

I just returned from RadioShack where I bought a BASIC Stamp educational
kit, and while there learned of the LED Bargraph electronic component. I
would like to learn how to add it to a circuit as described above.

 

take a look at:

http://www.national.com/pf/LM/LM3915.html

 

If the first search term for Google is "schematic" it seems pretty good,
and a "+" tells it you really mean you want that word included.
Try google for
+schematic +lm3914

 

Thank you Chris! Nice lead on a component i think
I will find useful!

 

have a look at
Beginners and Intermediate Electronics
http://homepage.ntlworld.com/g.knott/elect141.htm

 

Nice. Thank you!

 

I saw LM3915 on sale at Electronic Goldmine. http://www.goldmine-elec.com
You may want to give then a try.

--
Dmitri Abaimov
http://www.cabling-design.com
Cabling Forum, color codes, pinouts and other useful online resources for
premises wiring users and professionals
http://www.cabling-design.com/resources/documents/residential.html
Residential Cabling Guide 2003

 

Hi,

Although I agree the LM39XX bargraph chips are ideal for your
application, the way I remember it, the LM3915 is internally
calibrated for logarithmic scale (as in LED VU meters); its sibling,
the LM3914 is linear.

Regards,

Anand Dhuru