This is the post that I wanted to put up last night, but, due to Youtube being useless, it's had to wait until today.
Anyway, having spent a while checking out every schematic on Tim Escobedo's site, I decided to have a go at messing around with the PWM, which turned out to be masses of fun. At the moment, it has an envelope which controls both the speed and depth of a tremolo simultaneously. The tremolo, in turn, is controlling the pulse width.
Confused? so am I, here's a video of what I've got so far:
Ok, so when I make something, I almost expect it not to work, but when I'm using technology that's been proven over years of use, and even that fails me, it's just annoying. This is the first video I tried to upload to Youtube, it's supposed to be a demonstration of my version of Tim Escobedo's VCF fuzz pedal, with some additions.
This is how it appears on the website:
I feel that the lack of audio makes it slightly less interesting...
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Right, so I took the 2399 off my breadboard, because it was all a bit much for me, but here's a great example of what can be done with it when it's in the right hands. Pitch Pirate, and for those who are interested, here's a picture of it from the same site:
If you like the sound of that, or are into any sort of crazy sounding effects, it's worth checking out his other stuff, there are some really cool sounding pedals in there.
This post epitomizes the name of this blog. I just built a Red Llama for a friend, it has the neatest wiring I've done so far, and it was working perfectly...
Then, having put the bottom on, it stopped... bottom comes back off, no loose wires, nothing seems to have changed. Strange.
I have read that these chips can break unexpectedly, so I'm assuming it's that, but with no spare to check, I have no way of knowing, so I could be back to square one. New chip is in the post, fingers crossed!
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I just watched this, it's worth checking out if you have any interest in guitar effects, or in fact any electronic music.
Cry Baby: The Pedal That Rocks The World from Jimmy Dunlop on Vimeo.
So, having read a lot about the LM386 (op-amp) and PT2399 (delay chip), I decided to get a few to mess around with. After getting them both in the post today, I got out the breadboard and started to mess around with the LM386, hoping to come up with something interesting. This might have happened, if I hadn't busted both of them by plugging in the power supply with the wrong voltage... not an expensive mistake, but I was having fun!
Anyway, with no 386, I moved on to the 2399, and built the LoFi delay, which, as it turns out, doesn't work very well with guitar (should have heeded the warning). Anyway, one more idea down the drain, on to the next! I'd seen the Noise Ensemble on DIY Stomp Boxes a while ago, so, still hungry for something that would give me some interesting noise, I gave it a go, and it sounds awesome, I've got it as 'stock' at the moment, but am going to mess around with it over the next few days, I'll put up some sound clips when I've got something I like.