Hey all - wanted to say thanks for answering various questions I've raised in the past.
I've created my first little project. An Atari Punk Console. The circuit was originally published by Forest M Mims III back in the early eighties. It's a stepped tone generator, or more simply "it makes a bunch of cool sounds by turning a couple of knobs!".
This was the first circuit I built from scratch without a printed PCB. The first attempt I made used two 555 timers but I could not get that working so I decided to start over and use a single 556 instead.
**broken link removed**
I happen to have a bunch of Forrest books and used the original schematic he posted since i found it easier to read. The above is just for reference. His circuit also called for two identical .01 uf caps so that is what i used, although I'm thinking of trying a .001 uf since alot of the atari punk posts seem to use that. Might give a more interesting sound.
I also hooked up a 10k audio pot to a headphone jack since I'm making this for a friend who is into electronic Music. I had a 100k audio taper but the 10k worked way better.
I'm thinking also of adding a opamp on the output configured as a voltage follower with unity gain and hear how that sounds. A friend who does audio electronics professionally suggested I give that a try.
I've included pics. I've noticed i made a mistake setting up the audio pot so I will fix that later when I have time. I'm going to put all of this in a enclosure and I'll post pics when that is done too.
Cheers,
Fuper
I've created my first little project. An Atari Punk Console. The circuit was originally published by Forest M Mims III back in the early eighties. It's a stepped tone generator, or more simply "it makes a bunch of cool sounds by turning a couple of knobs!".
This was the first circuit I built from scratch without a printed PCB. The first attempt I made used two 555 timers but I could not get that working so I decided to start over and use a single 556 instead.
**broken link removed**
I happen to have a bunch of Forrest books and used the original schematic he posted since i found it easier to read. The above is just for reference. His circuit also called for two identical .01 uf caps so that is what i used, although I'm thinking of trying a .001 uf since alot of the atari punk posts seem to use that. Might give a more interesting sound.
I also hooked up a 10k audio pot to a headphone jack since I'm making this for a friend who is into electronic Music. I had a 100k audio taper but the 10k worked way better.
I'm thinking also of adding a opamp on the output configured as a voltage follower with unity gain and hear how that sounds. A friend who does audio electronics professionally suggested I give that a try.
I've included pics. I've noticed i made a mistake setting up the audio pot so I will fix that later when I have time. I'm going to put all of this in a enclosure and I'll post pics when that is done too.
Cheers,
Fuper