Summer of Synth-DIY: week 6
June 30th, 2008Not a lot of progress on the Synth-DIY front, but there was a little motion.
Went to Electronoize Playshop on Saturday, where we breadboarded Smokey/Little Gem style amplifiers.
On Sunday, I picked up some more cigar boxes from the cigar store ($1 each - bargain!), and mounted my amp in one:

So I at least got something sorta synth related done… If nothing else, it’s good to have another battery powered amp around. The battery compartment on my Marshall is strangely loose now, and I have to shim the battery in with cardboard.
Press The Button Podcast for June 25, 2008
June 25th, 2008Summer Of Synth-DIY: Week 5
June 23rd, 2008As I’ve mentioned, this was kind of another busy week, as I ran off to Scorched Nuts, so no news on the synthesizer front. Things are somewhat less hectic now (no long journeys in the near future unless you count the primer in mid-July), so I can hopefully get things back on track now.
Unless of course, I start building tons of radio gear for September, because I think I want to do a radio-centric theme camp at Recycled Rainbow proper. But I’m all about sampling shortwave and atmospheric noises, so that’s almost like building synthesizers, right?
Press The Button Podcast for June 18, 2008
June 18th, 2008Summer of Synth-DIY: week 4 (almost completely off-topic)
June 16th, 2008As I predicted last week, I don’t have much progress to report this week - we spent approximately 30 hours in the land of the Bacon Maple Doughnut for the destination wedding of some friends - we would have stayed longer, but my wife had to be back at work today. FWIW, I did see some of these wondrous doughnuts, but couldn’t quite go for the instant heart attack of the Bacon Maple. The peanut butter and Oreo was quite good, though.
I did get a number of interesting ideas from the electro-music forums, though.
my gripes with gEDA
June 11th, 2008Because I like open-source tools, I thought I’d give gEDA a shot. I installed it (but see below), and attempted to do a schematic for the “Big Baby 8″ sequencer I hope to build sometime this summer.
Good things:
- I like the features available for the price
- I REALLY like the keyboard controls. They were pretty intuitive and convenient.
Bad things:
- I never actually was able to get the whole suite completely installed on my Mac. I kept running into some kind of Fink Ghostscript dependency loop that prevented something from getting installed. At some point I decided it was “installed enough” - gschem was installed anyway (which was all I really needed), so I gave up on whatever was missing. I did manage to get the whole suite installed on a SPARC Ubuntu box, and once I get my Ubuntu Studio box configured, up, and running at home , I will try again on that. I’m sure that will go ok.
- For some reason, I couldn’t get the information box that appears on a new schematic to delete. I did this easily on the SPARC box. It may just be a question of selecting everything else, moving it aside, and then lasso-ing and deleting the box, but with my schematic splayed all over it, doing so would probably nuke whatever’s there.
- Connecting nets to components seemed tricky at best. In order to tell if a connection had been made, I usually ended up selecting a component and moving it around to see if the net moved with it.
- I eventually ended up with a connection I COULD NOT connect a net to, no matter how hard I tried. That’s kind of no good.
- At some point (when I was attempting to correct my not-quite-connected nets), it started getting really crashy. After two such crashes I lost my patience and decided to re-do the whole thing in EAGLE.
Now, don’t get me wrong. It definitely seems like a nice set of tools. I’m still kind of a newb at EDA tools in general, so I may not be the best test case. I will probably try again (but on Linux, rather than OS X)
Press The Button Podcast for June 11, 2008
June 11th, 2008Summer of Synth-DIY: Week 3
June 9th, 2008I didn’t get any actual construction work done, due to being out of town (this may become a bit repetitious for the rest of the month, since I’ve got stuff going on nearly every weekend…). I tried not to let this slow me down.
Sound Lab:
- Got my 33k resistor and some nicer trimpots
Arduino Seq V2:
- Played with the schematic some more (will post soon)
- Started working on code
- received RBBB Arduino kits (so yeah, I now have something like 8 Arduino (or compatible) boards…)
Big Baby 8:
- Re-did the schematic in EAGLE.
- received my 4017, so prototyping can maybe begin soon
SN-Voice:
- Received first batch of parts (almost all resistors except the tempco and some caps)
Cigarbox modular:
- Found some 1″ L-brackets (or as they call them, “corner braces”). I’d prefer smaller, but at this point I’m happy to have found anything. Many thanks to my dad, who helped me find them.