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For those interested, the seller also has an EVENTIDE H-910 for parts/project listed
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Googlish:
"For auction is one of my DIY projects that I can not complete due to time constraints.
It is a OAKLEY SOUND TB3031 Roland TB 303 clone with an integrated MIDI interface and CV / GATE converter.
Midi interface remains a problem, above say it's somewhere a soldering defects available.
By pressing the lower right corner of the device jumps to function. With a CV gate converter I tested the Oakley, it works flawlessly
However, the Midi zickt around like said.
It is the rare components are installed, sound is excellent, but as I now also have other devices missing here, my time to debug the ready.
For someone with time and knowledge of electronics certainly not a problem, since it's really just a trifle.
The clone is the TB3031 by Oakley Sound, Midi interface from Seb's DIY Page. Links I can gladly provide on request. Schematics and code is all
freely available.
Supplied with power supply and well packed (which is already visible in the photos)."