vu meter led bar graph using lm3914

[kikoou]

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.

[temtronic]

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

[drh]

Texas Instruments bought National. Here is a link to the data sheets.
http://www.ti.com/product/lm3915
_________________
David

[PCM programmer]

kikoou,
It's better to ask general electronics or projects questions on Google.
Do a search on http://www.google.com for this: