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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, ...
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
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.
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|
Get your LM3916 and breadboard ready. Make sure you have all the parts in the parts list.
7 - updated description
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
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