saulius659
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Description
120 LED VU METER - W39908ASM2_SGBoard-B-LED-2
### DESCRIPTION
120 LED VU meter
The audio "line out" from amplifier or any audio media is the signal source.
### TECHNICAL DETAILS / COMPONENTS
Two boards are needed to build this vu meter:
SGBoard-A-MAIN-2 / The board for all components exept the LED bargraphs.
SGBoard-B-LED-2 / The board for the LED bargraphs (6pcs bargraphs)
### LEARN / TOPIC / BUILD INSTRUCTIONS
The board works after you assemble it.
You can adjust input level.
The circuit drawing with components are in one of the pictures.
Code
www.vumeter.eu
Schematic and Layout
www.vumeter.eu
Aug 06,2017
7,149 views
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120 LED VU METER - W39908ASM2_SGBoard-B-LED-2
2 Layers PCB 11.4 x 153.7 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen
7149
7
5
8.58 (3)
Published: Aug 06,2017
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Topic
- Comments(5)
- Likes(7)
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Holger OnkelHolgi Apr 16,2024
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rosegoldgryffith Dec 11,2023
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James Hauser Oct 31,2019
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Engineer Jan 09,2019
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rosario di palma Oct 17,2018
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Engineer May 16,2018
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Felipe Guiffa Gomez Aug 31,2017
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3 votes
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8.58
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
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10.00

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10design
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10usability
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10creativity
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10.00

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5.75
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I make orders from the same file, how is that possible???
Hi Saulis, managed to order the boards, but now appear to have the board revision without the voltage regulator 78L09. The boards PCBway delivered work, but the IC order is incorrect. IC1 starts on the right side (where +5v and p2 are located) so the display grows from pin1 of the first LM3916, moves right, and starts at the next pin 1 of the second LM3916. Looks like the layout is flipped, and now I have to resolder and flip every set of 10 signal wires to the board pins.
Is there a revised version of this board? Is the version with 78L09 regulator the latest? From your videos/photos, looks like I was shipped an early revision :(