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kikoou
Joined: 25 Oct 2011 Posts: 10
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vu meter led bar graph using lm3914 |
Posted: Sun May 26, 2013 1:37 am |
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Good morning everybody,
Please can you help me to creat a VU meter led bar graph for my stereo.
I use lm3914 but the problem is when i get the signal all 10 leds are blinking at the same time.
Please help me to realize this project because i need it. |
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temtronic
Joined: 01 Jul 2010 Posts: 9170 Location: Greensville,Ontario
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Posted: Sun May 26, 2013 5:04 am |
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first ,this is a forum for helping those using the CCS C compiler for PICs...
NOT a general electronics101 site.
2nd, I didn't know they still made the LM3914! I last used them 30 years ago(1/2 my lifetime) for custom DJ boards.
3rd the LM3914 is NOT the correct part to use for a VU meter as it is a linear device. You should use the LM3915 ,which is the logarithmic device.
4th, I have to believe that National's website(or whoever bought them out) , or Google , will be able to help.
5th now if you want help coding a PIC to emulate the LM3915...you've come to the right place !!!
hth
jay |
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drh
Joined: 12 Jul 2004 Posts: 192 Location: Hemet, California USA
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PCM programmer
Joined: 06 Sep 2003 Posts: 21708
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Posted: Mon May 27, 2013 1:26 pm |
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kikoou,
It's better to ask general electronics or projects questions on Google.
Do a search on http://www.google.com for this:
Quote: | LM3914 OR LM3915 VU meter microchip pic |
There is a 2-page Sparkfun thread that discusses the project. |
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