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Old 1st March 2012, 01:54 AM   #1
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Default VU meter tower. need advice

I have the tower it self built already and it can be viewed in the attachment. The design is based off this vid:

LED VU Meter - YouTube

I was wondering what are all the components I need to fit it with. I heard about the LM3916 circuit but dont understand how to apply it to a tower. I also heard that arduinos are good to use and am willing to program.

All in all I was looking for someone more experienced then myself to give me a play by play on everything I would need to buy to make this come to formation.
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Last edited by singed5059; 1st March 2012 at 02:47 AM.
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Old 1st March 2012, 07:29 AM   #2
Enzo is offline Enzo  United States
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Location: Lansing, Michigan
Look up Conn Dynalevel. It is a tube version of something similar. I have rebuilt a few and even have one in the shop right now. Won;t help you build your thing, but you might find it interesting.

Conn Dynalevel - YouTube
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Old 1st March 2012, 02:32 PM   #3
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singed:
You need to answer a few qs:
What is your budget?
How many colums (frequency level indication)?
How many LEDs each column?
How bright?
AC or DC
Wats your electronics capability?
etc, E
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Old 1st March 2012, 03:22 PM   #4
LAJ is offline LAJ  United States
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I would go with a driver chip that has hysteresis. The first youtube one doesn't have it, but the Conn Dynalevel looks like it does. (The LM3916 doesn't have it built in but I have seen a design with an opamp front end that accomplishes it.)
The Samsung KA2288 does have it but its only 7 LEDs.

Last edited by LAJ; 1st March 2012 at 03:24 PM.
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Old 1st March 2012, 07:29 PM   #5
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experience: I can do basic breadboard work. i can soder for example if i could modify some prebuilt board. I know how to program an arduino. I can solve for voltages and currents and resistance according to my B+ in circuits class .

Budget: 80$ ish

Ten columns, with one pretty bright led each to disperse throughout the frosted
12 inch by 4 inch plexiglass

LED brightness: Not sure how how the lumen unit scales in regards to brightness when purchasing without seeing them in person.

AC current

Last edited by singed5059; 1st March 2012 at 07:50 PM.
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Old 1st March 2012, 08:51 PM   #6
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Here is a circuit from an old German mag that should do the trick. The beauty is that you can add LEDs(for brightness) as each row/column is driven be a transistor. Seeing that you have a guitar in the pix you may want to adjust the frequency bands to the output of that instruments (no need to have 31 or 16kHz displays) E
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Old 1st March 2012, 10:27 PM   #7
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looks fun haha and thank you. can circuitry like that be done on a bread board? And where is a good place to obtain the components?
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Old 2nd March 2012, 12:31 AM   #8
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Yes it can. Parts from Digikey, Moser, Jameco and many other suppliers. Have fun! E
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Old 2nd March 2012, 07:52 PM   #9
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also is there a name for the entirety of the circuit?
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Old 2nd March 2012, 08:08 PM   #10
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and also what is the entire function of the circuit hah. I feel like it does much more than just flash 10 leds ^^. The german language is confusing.
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