And marginally better sound demo, but the video is horrible and flashing, well anyway, just a sinewave in and out to a mixer: wavefolder 20 06 2023 - YouTube
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I was rather miffed that JLC started charging an extra $16 for black solder mask on aluminum. Been experimenting with lasers and spray paint. Many failed attempts. This one isn’t too bad:
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analogoutput modules done and an other little thing I picked up an interface for the Wiichuck controller .
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well I was digging in the garage full of crap and came across this old box thought it would make a cool portable synth case .
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Bravo, it honestly looks like you found an old box and opened it only to find it was already a synth case.
My first case is an actual dresser set I found on the road because I have no idea how I want to initially arrange/sort everything. Drawers just happened to be 20cm tall.
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Just put together this little slew limiter literally on a whim, it was simple enough to yolo the build in a few hours:
This is the Synthfox SFP 19: sfcs: dual slew limiter
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That was a cool module. Will snag it eventually.
Just before storing away all my modules and stuff I was fiddling with a NiMH-LFO.
Sandelino’s NiMH-LFO.
When Summer is over and and I’m back from USA I will rebuild the rack for the modular machine and start checking/calibrating all modules.
Hah!
And you know where to get a battery for it, yes?
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A guy at our Swedish electronics forum sent me a few batteries and Sandolino gev me the answer that any NiMH battery would work, or to pe precis - the capacity of the battery determines the cycle time.
I wonder if it could be adapted to NiCd or LiION batteries as well …??
Pics please. … 19, 20.
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Finally, the O2 Minipops and Atmega Solina are finished. Might get the String synth some vine red knobs to make it look a bit nicer. Mandatory Small Stone in the background.
Tiny picture of the tiny stripboard of the synth:
Also some quick demo to show it blend in nicely with Syntronik vst Solina sounds:
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Another one-day project finished! I wanted a buffered multiple and some attenuators, so I did a two-in-one deal.
As usual, I do my faceplates with my own software, Synth Printer.
This was the final circuit, were I to do it again I’d use different resistors for the red and green LED to make them have the same brightness.
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Had a moment this evening to get the lower rail installed and start the upper rails. I don’t want to build something yet since I still have 10+ modules in the queue and I have no experience with any modular systems. This was the next best option for some garbage wood (rails were one offs at local second hand surplus store) to get a second life before scrapping (or perhaps will be a workshop rack, who knows).
Once I even have a sense of layout and scale I’ll make something permanent and presentable.
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R3’s only function, I think, is to limit current in the event the input voltage is outside the ±12 V range; 100k is probably larger than it needs to be for that but should be fine.
Note that an input voltage below -8 V may give rise to phase inversion, with the output going to about +10.5 V, not desirable behavior but not harmful to the circuit — and unlikely to occur, probably, since such voltages are rarely used.
What is this chip? Can it v/oct? Sounds useful.
IIRC it either takes midi or matrix scans a keyboard. It’s very lofi approximation of a strings organ.
I’d recommend the Hagiwo chord module as a far superior option that supports v/oct.
The two aren’t really comparable. AFAIK Hagiwo’s module takes only a single CV and gives you a single type/inversion of chord on that note. As opposed to the Solina which is paraphonic. Both have their uses but they’re different uses.
