GideonTech has been updated. Please view this page on the new site:

http://www.gideontech.com.

This page will redirect in 5 seconds.




 GideonTech
 -Main Page
 -Guides
 -Reviews
 -Articles
 -VP Case Gallery
 -Forums
 -Mini OC Guide
 -AvantGo
 -Contests!
 -Contact Us
 -Get Hosted !

 
Search to find the best prices on hardware and software:
 Currently...

 1 user(s) online

 Sponsors

Manufacturers:
 -IWill USA
 -Matrox
 -Samsung USA
 -Crucial Memory
 -Toshiba
 -EverGreen Tech
 -EPI USA
 -Buffalo Tech
 -ThermalTake
 -Zalman Tech
 -Cyber Cooler
 -Vantec USA
 -Icemat
 -Nikao
 -SuperPower
 -TweakMonster
 -Cobalt3
 -Lian Li
 -Sunbeam
 -C3
 -CoolerMaster
 -ShatteredWeb
 -Chenbro
Online Shops:
 -XPCases
 -PCMods 
 -Subzero PC
 -E-Compuvision
 -CrazyPC
 -HighSpeed PC
 -SideWinder Computers
 -UmaxPC
 -Xoxide Mods
 -Directron
 -IceePC
 -Lux Design
 -Azzo
 -DesignComp

 Affiliates

 -8Dimensional 
 -A1 Electronics
 -All Tech Box
 -A True Review
 -BlackMaxPC
 -CanadaForums
 -Case Mod God
 -Cooltech
 -Cosmo 3D
 -Datafuse
 -DJ Voice Review
 -Epigamer
 -ExtremeMHZ
 -Fragware
 -FuriousTech
 -Gruntville
 -Hardware Accelerated
 -Hard Avenue
 -The Hardware Corner
 -Hard H20
 -Hardware-HQ
 -HiTech Mods
 -Hexus
 -Inside Project
 -LanAddict
 -Legion Hardware
 -Moddin.net
 -OC'ers Club
 -OC'ers Online
 -OCIA
 -OC Modshop
 -OC Warehouse
 -PC Arena
 -PC Extreme UK
 -PC Hardware UK
 -PC Tech Talk
 -Red&Blackness Mods
 -Tech Dreams
 -Tech Guy
 -Think Computers
 -TwistedMods
 -Virtual Hideout
 -Virtual Underground
 -Voided Warranty
 -Webwarrior
 -WTF I'm L33t
 -Xchange 101
 -XTreme Mods
 -Xtremods
 -Xtreme News
 -Xtreme PC Tech
 -ZZZ Online

 Link

 Add Us!
 Latest Projects  Latest Reviews





 Latest Forum Threads...
 GT Updates
 GideonTech Projects
-- Stereo VU Meter
-- 07.31.2003
-- By: jingoku
-- Page: 1 2

   This is a quick how-to guide for making a stereo VU meter using the LM3915/LM3916.  The LM 3916 is an integrated circuit (IC) that takes analog voltage levels and drives 10 LEDs, LCDs, or vacuum fluorescent displays to represent digital voltage levels just like a VU meter. An LM3916 IC will take one signal source. Thus if you want to display a stereo representation of your audio, you must install 2 LM3916 ICs.


Click to above to enlarge

   This is the schematics of the circuit I built. Keep in mind what I said earlier about mono, and stereo.

   The 2.2 uF Tantalum Capacitor is only needed if your wires from the IC to the LEDs are longer than 6 inches. Although the specs for the LM3916 say you can use any voltage from 3 V to 20 V, I suggest using at least 12 V to power your circuit.

   So before soldering everything together, letís just test the circuit on a protoboard. First letís get everything ready. The following items are what we need for this project:

  • LM3916 IC

  • 10 LEDs of your choice (5mm or 3mm doesnít matter) I chose 2 green, 3 yellow, 3 red, and 2 blue

  • One 1.2 KOhms resistor

  • 2.2 uF Tantalum capacitor (optional)

  • Stereo Jack

  • wire

  • soldering iron and various cutters

   Ok, letís start with the assembly.

   After getting all the components ready, it is time to start prototyping. First to be placed onto the protoboard is the most important piece, the LM3916 IC.

   Then put everything else together. Ah, noticed for this prototype I used 10 5mm blue LEDs. Hurray, the prototype worked. I hope yours did, too.

   Now itís time to design the permanent circuit. Here is where you can get creative, you can arrange them the way you want them, and find creative ways to put it all together. Here is how I did mine.

   I used DUBOX connectors (those blue things you see in the picture). By using those connectors I could just use the wires you see in the next picture (hanging from the power supply) to change LED color or simply making longer or shorter wires to reach my LEDs.

< Back to the Main Page

Conclusion >

All content Copyright © 2000, GideonTech.com
Please view our Privacy Statement