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singed5059 1st March 2012 01:54 AM

VU meter tower. need advice
1 Attachment(s)
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.

Enzo 1st March 2012 07:29 AM

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

mickeymoose 1st March 2012 02:32 PM

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

LAJ 1st March 2012 03:22 PM

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.

singed5059 1st March 2012 07:29 PM

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 :cool:.

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

mickeymoose 1st March 2012 08:51 PM

1 Attachment(s)
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

singed5059 1st March 2012 10:27 PM

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?

mickeymoose 2nd March 2012 12:31 AM

Yes it can. Parts from Digikey, Moser, Jameco and many other suppliers. Have fun! E

singed5059 2nd March 2012 07:52 PM

also is there a name for the entirety of the circuit?

singed5059 2nd March 2012 08:08 PM

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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