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Old 26th March 2010, 04:21 PM   #1
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Default Elektor USB magic eye

Hope this is the correct area to start this thread...anyway in the January 2010 Elektor magazine it has an article on a PC USB load indicator using a EM84 Magic Eye tube.

http://www.elektor.com/magazines/201....1191254.lynkx

I was after some advise to use this as a base for an audio line level VU meter.

The main advantage is it works off the USB 5V supply so was after keeping this and running it off a 230/5V plug in mains unit.

Cheers

John
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Old 26th March 2010, 04:32 PM   #2
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The link doesn't work for me.

Other than that, nice idea. I'm interested.
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Old 26th March 2010, 04:34 PM   #3
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you could probably use the step-up converter from the elektor schematics, combined with this: Audio VU meter - AhA! Webdevelopment & Design
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Old 26th March 2010, 04:56 PM   #4
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This should work hopefully

USB Magic Eye - ELEKTOR.com | Electronics: Microcontrollers Embedded Audio Digital Analogue Test Measurement

I was thinking about using the link you suggested but a few pointers would be grateful. Searching the internet it seems to be the latest of a "magic eye" i could find. I have also seen some which only use the em84 and no other tubes, but am not sure which would be best.

Cheers

John

Last edited by seroxatmad; 26th March 2010 at 05:02 PM.
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