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 Forum index » DIY Hardware and Software » Rob Hordijk DIY Designs
Benjolin Light Synth
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casperelectronics



Joined: Feb 13, 2008
Posts: 23
Location: Troy Ny usa

PostPosted: Sat Feb 13, 2010 12:05 am    Post subject: Benjolin Light Synth Reply with quote  Mark this post and the followings unread

I'm almost done with a dual benjolin unit. The latest addition is a high power tri color LED display. I used a 1W tri color LED, Each channel draws 350mA. they're bright!
The beauty of it (beyond how cool the light looks) is how simple it is. I wired up three FETs (high power transistors) to accept signals from one of the 8 benjolin outputs and the signal drives the LED. The LEDs are powered with a 1.5 amp 5 voltDC power supply.

The PWM output is especially useful since PWM is a common means of fading LEDs. By using the PWM signal out you can create some really nice, smooth pulsing. The more choppy signals are cool too!

I like how the patterns overlap to create complex color mixing effects.
I also like that the signals used to control the lights can be taken from signals that may not be apparent in the audio signal but are still linked. The audio to visual connection isn't always immediately apparent, but the link becomes apparent and it never seems purely random.




Last edited by casperelectronics on Sun Apr 04, 2010 10:54 am; edited 1 time in total
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MusicMan11712



Joined: Aug 08, 2009
Posts: 712
Location: Upstate New York USA
Audio files: 148

PostPosted: Sun Apr 04, 2010 9:14 am    Post subject: Reply with quote  Mark this post and the followings unread

I just checked out the demos on your website. Very nice indeed!!!
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Tim Servo



Joined: Jul 16, 2006
Posts: 924
Location: Silicon Valley
Audio files: 11

PostPosted: Sat Apr 24, 2010 9:10 pm    Post subject: Reply with quote  Mark this post and the followings unread

Completely awesome! Reminds me of Doctor Who piloting the TARDIS. Smile


Tim (Doctor Huh?) Servo
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