Curcuit bending 386 and 74HC14B1 chips with a breadboard.

dichotomos · Joined: Feb 08, 2010 Posts: 20 Location: Canada

Hi I figure I might learn a thing or two more from you guys. I've been trying to circuit bend for a couple of months now with limited success. I know from various sources that the older the device is the better it is to circuit bend. I got Nicholas Collins book homemade electronic music and have had better success with building my own creation to bend. Tell me what you think?

http://www.youtube.com/watch?v=cGL7B9lbfng

What other things could I include here to give it more variation in sound textures besides switching out various capacitors and touching open wire leads??? Any advice would be great.

Thanks.

electri-fire

electri-fire · Posted: Tue Apr 13, 2010 2:29 pm Post subject:

A couple of potentiometers would give a bit more control than just touch contacts.
Oh, and use up to six 74HC14 outputs, mix them into the 386 amp through 100k resistors or through diodes as discussed in Collins' "Hand Made Music".

And how could I forget, try LED's connected between the outputs.

http://electro-music.com/forum/topic-38634-25.html

droffset · Posted: Tue Apr 13, 2010 2:38 pm Post subject:

The Cacaphonator looks like fun.

Try this thread too:
http://electro-music.com/forum/topic-40991.html

dichotomos · Joined: Feb 08, 2010 Posts: 20 Location: Canada

Lots of helpful advice here, One of those sites has a decent Breadboard diagram maker.......I'm all visual right now...so schematics are going to take a while.

dichotomos · Joined: Feb 08, 2010 Posts: 20 Location: Canada

I can't really wrap my head around making a schematic just yet so bare with me

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.

this is a mock up of what I made, I started with 221 capacitors on the bottom row but opted to switch them out with some that I found on a board I've been plundering....I don't really know what they are. The 221 capacitor on the top row is going into the ground.

The Big 220uf capacitor is to supposedly boost the signal. My knowledge of all this is almost all hands on and rudimentary at best.

Thanks for the help, I'll try out the potentiometers for sure.

dichotomos · Joined: Feb 08, 2010 Posts: 20 Location: Canada

Thanks for the help, I still have a long way to go, the suggestions and the links are informative. I haven't really had the time to school my self properly yet as I'm taking on several things at once to put together for the end term project.

Next time When I post something I'll at least have a link to the proper IC sheet.

Thanks again.

droffset · Posted: Thu Apr 15, 2010 6:02 pm Post subject:

Don't be discouraged, electri-fire's just grumpy sometimes. Smile

You have some free unused inverters on your chip, maybe try making more oscillators using different sized capacitors and connect stuff together.

Do try some of the stuff in the links though, they're fun.

Check out this intro to Lunettas too, I'm writing it for other purposes but it's close enough to what you're doing.
https://docs.google.com/Doc?docid=0AZIwOP-PR9sSZDlidzgzbV8wY3RjenJqanY&hl=en

I don't have the Nic Collins book but people seem to like it so maybe try more stuff there too.

electri-fire · Posted: Sat Apr 17, 2010 6:52 am Post subject:

stolenfat · Posted: Tue Apr 20, 2010 6:40 pm Post subject:

synthmonger · Posted: Sun Jun 13, 2010 6:38 pm Post subject:

I thought 7HC*** chips can't handle voltages above 5v (7max)?

electri-fire · Posted: Mon Jun 14, 2010 11:39 am Post subject:

tjookum · Posted: Thu Jun 17, 2010 11:16 am Post subject: