Main Details
Maker MIDIbox Brand
  • 4 x 6 × Voice
Form Factor Desktop
Signal Path Digital Hardware (including Analog Connections)
Notes sammichFM was designed to be the "no excuses" MIDIbox FM synthesizer kit - i.e. for all those people who want a MIDIbox FM but consider building it with modules too time-consuming, too newbie-unfriendly and/or too hard to design and construct a control surface.

sammichFM therefore has the following design constraints/features, which support each other:

looks a lot like sammichSID,
cheap (relative to fully modular MIDIbox FM with "pro-looking" control surface),
DIY newbie friendly,
minimal control surface,
single "walwart"/AC adapter supply, no bipolar PSU and mains power wiring!
"sandwich-style" stacked PCB design, no wires!
laser-cut 3mm acrylic case by Ponoko, customization possible,
industry standard 2x20 character LCD, customization possible,
common control surface parts used, customization possible,
available as a complete kit, including PCBs, components, case, hardware and new OPL3 chipset!

MIDIbox FM Synthesizer features:

One Core module and one OPL3 module, fully integrated on one PCB with power supply.
4 simultaneous instruments of 6 voice polyphony each, plus drum kit. Each voice is a 4 operator waveform.
Each instrument can be routed to one of four audio outputs, via two stereo 1/4" phono jacks.
Five "BankStick" slots, so you can store 5 banks of 128 patches, 32 "Ensembles" and 16 "Drumsets"
Minimal control surface with up/down arrow buttons for fast menu scrolling.
2x20 character LCD with support for low-power (25mA) or high-power (250mA) LED backlight.
Potential for future upgrade to 32-bit microcontroller via an undocumented "daughterboard" header.


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