Sega Megadrive sound chip based generative drum machineDesigned by Spherical Sound Society in Spain
OPERA ROTAS is a mutant, generative drum machine. It's built around a Yamaha OPL2 FM audio chip, a close cousin of the one used in the Sega Genesis / Megadrive consoles. At the core, it has a real Ya…Read More…
At the core, it has a real Yamaha OPL2 audio chip and live sounds bonkers, brutal. It's all body and weight while being crystal clear and punchy. The videos don't do aural justice but it serves to get an idea. There will be decent audio and video demos coming soon.
The firmware is a work in progress. In future is possible to turn it into a fully fledged polysynth with a different firmware, but at the moment it is more like the mutant drum machine you hear in the demos.
The project will go open source at some point while I retain the hardware fabrication rights. If you get one PCB or kit you can ask for the source code to tweak it if you will.
It comes in 4 flavours:
All above options needs a OPL2 board to finish the build that offer too.
The PCBs has 2 SMD chips to solder. They are the SOP-16 type (the easier ones) but I also offer an option to send you it presoldered in case you have never done SMD and keep the build beginners level.
Manual, schematics and interactive BOM available in the github https://github.com/spherical-sound-society/OPERA_ROTAS
You can watch additional videos and gather info in this thread: https://www.muffwiggler.com/forum/viewtopic.php?f=17&t=233199
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I normally ships 2 days a week.
I charge a 20% on returns plus the shipping costs.
If you have to return an item, please use the same box that I sent you and declare 20€ or 20USD or similar price in the customs declaration, as if you send it back in a different box and declaring the real costs, the Spanish customs would charge me an additional 21% to receive the packet that I should finally charge it to you.
Justin | Aug. 31, 2021
Mark | Sept. 21, 2020
Antonio | Sept. 15, 2020
Romain | Aug. 14, 2020
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