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AcidMods Resources ----- ( These are helpful tools for modding ) => Electronics Projects => Topic started by: Luigus on October 09, 2012, 06:30:41 AM

Title: Mic activated VU Cube - W.I.P
Post by: Luigus on October 09, 2012, 06:30:41 AM

Hey guys..

So this is a project i started on a while ago, I have been messing around with the idea and thoughts on how I'm going to do this..

Basically what I'm going to do is run a Mic on a LM386 Amplifier and the output of this Goes To a LM3196 Led VU driver.. And all this in a small plexi glass cube..
This is just for the fun.. and I maybe want to build a boombox later with a full scale VU on the Side..

So far I've Drawn Schematics For the LM386 Pre-Amp and the LM3916 VU LED driver.

This is the LM386 Pre-Amp Schematic:
(https://acidmods.com/forum/proxy.php?request=http%3A%2F%2Fi1193.photobucket.com%2Falbums%2Faa360%2FEndo63%2FLM386_zpsb344c154.jpg&hash=1f37d4775e4f17fefbc00191d4cebffa993e3167)

This is the LM3916 VU LED driver schematic:
(https://acidmods.com/forum/proxy.php?request=http%3A%2F%2Fi1193.photobucket.com%2Falbums%2Faa360%2FEndo63%2FNote_zps07a153dd.jpg&hash=fae947a636d234223175cddf2ac48e4afc3617d5)

I'll be updating as I go along, this is quite a long term project so this thread will be still for a while... :p
Thought i'll show you guys what i'm up to.

Title: Re: Mic activated VU Cube - W.I.P
Post by: Luigus on October 11, 2012, 10:59:20 AM

Update:

Ok so i Had some Serious Faults with that schematics i Drew up.
I Remade them both on one board. And i Made the Led Bridge thingy for the LED's

I got some parts in, but i'm still waiting on the core items.. Im etching the board Saturday, and starting on the dimensions and size of the actual cube.

Here's a Pic of the new Board: P.S I updated it since last, i mixed pin 1 and pin 10 up :/.. THis one is right
(https://acidmods.com/forum/proxy.php?request=http%3A%2F%2Fi1193.photobucket.com%2Falbums%2Faa360%2FEndo63%2FTest_zpse5021644-1.jpg&hash=a1186e4c7b99cf83add6ff98e84f0231b19ef174)

Here's a pic of the LED "bridge" as I like to call it :P
(https://acidmods.com/forum/proxy.php?request=http%3A%2F%2Fi1193.photobucket.com%2Falbums%2Faa360%2FEndo63%2FSnapbucket%2F8582F3D6-orig.jpg&hash=670aa501f6baba513d97b9567d0f9e5df4454e51)

Title: Re: Mic activated VU Cube - W.I.P
Post by: cobi_vw on October 11, 2012, 10:22:43 PM

This is a very cool project. I'm currently working on building a mini-portable guitar amp. My pre-amp is a bit different from yours, but still uses the LM386 for amplifying the sound.