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Featured User: kurt
Open-source hardware project hosting is my passion. I spend most of my free time building neat gadgets or planning what I'll build next. I love building things, and I want to make Open Hardware Hub a place that inspires others to build, ...
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Updates 2013 February 18
It's been a while, hasn't it? Well, that's ok because we've got a lot of updates to talk about. Most of these have been effective on the site fora couple weeks now. A few may or may not be active when this article gets posted, but they'll certainly be applied in the ...
Mono VU Meter
By: kurt
A VU meter is used to display the loudness of an audio signal. This open source VU meter lights up ten LEDs to show how loud a mono audio signal is. Two of these can be made to show the loudness of each channel in a stereo signal.
Download project description w/o images
Download project description w/ images
Files
- VU Meter.sch - VU Meter EAGLE Schematic
- VU Meter Schematic.pdf - VU Meter PDF Schematic
Bill of Materials
Qty | Part # | Description | Schematic ID | Source | |
---|---|---|---|---|---|
1 |
|
SJ1-3523N | CONN JACK STEREO R/A 3PIN 3.5MM | J1 | Source |
1 |
|
BS6I | SNAPS 9V 6" LEADS I-STYLE | JP1 | Source |
1 |
|
50-0015-00 | SWITCH PB SPST ALT ACT PC MOUNT | S1 | Source |
1 |
|
SK100M035ST | CAPACITOR ALUM ELEC 10UF, 35V, RADIAL | C1 | Source |
1 |
|
EVN-D8AA03B14 | TRIMMER 10K OHM 0.1W TH | P1 | Source |
1 |
|
LM3916N-1 | LED BAR GRAPH DRIVER, 3916, DIP18 | IC1 | Source |
10 |
|
WP7113LID | 5MM LOW CURRENT RED LED, LAMP THOLE, BULK | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10 | Source |
1 |
|
6LR61XWA/1SB | BATTERY IND ALKALINE 9 VOLT | Source | |
1 |
![]() |
Y-Audio Cable | 6inch 3.5mm Stereo Jack/Two 3.5mm Stereo Plug Cable | Source |
Download BOM w/o images
Download BOM w/ images
Steps
1. Get ready
Get your LM3916 and breadboard ready. Make sure you have all the parts in the parts list.
Download steps w/o images
Download steps w/ images
Revisions
7 - updated description
6 -
5 - added youtube link. updated line numbers.
4 - changed LED part
3 - added description to project image
2 - added file descriptions
1 - Initial project release
Add revision
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