introducing the Wrongomin

leafcutterjohn · Joined: Feb 14, 2010 Posts: 3 Location: London UK

In the past I have got lots of great ideas from this forum so in order to give something back I'd like to share with you my Wrongomin. Which is a simple CMOS noise maker which uses three LDRs to control the pitch of 3 very high frequency oscillators (1/2 a 40106B) which are all usually well above the range of human hearing. The three oscillators are mixed through signal diodes where they interfere with each other and are amplified using half a 4049UB.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

It sounds simple and it is but it's surprisingly playable - see video.
http://www.youtube.com/watch?v=JInXgPcUKwQ

The schematic is here: http://leafcutterjohn.com/?p=1128

Let me know what you think.

Thanks and all the best,

John.

Blue Hell · Posted: Mon Feb 15, 2010 10:14 am Post subject:

John, nice lil noise maker!

slacker · Posted: Mon Feb 15, 2010 11:23 am Post subject:

Very cool, thanks for sharing that Smile

RF · Posted: Mon Feb 15, 2010 7:13 pm Post subject:

That's really great! Quite unusual Smile

bruce

droffset · Posted: Mon Feb 15, 2010 7:22 pm Post subject:

Awesome, thanks for sharing!

leafcutterjohn · Joined: Feb 14, 2010 Posts: 3 Location: London UK

Thanks for the nice welcome!

It's a nice simple starter circuit, I'm really getting into the sonic wonders of CMOS.

See you again very soon!

John.