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sammichFM Assembly video made by Siempre La Luna (featuring backing track by TK!)


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)
  • small
  • 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.

      BATCH #2 (50 kits) SCHEDULED TO SHIP MAY 1st 2011

      Go here for more details: sammichFM Info

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So you have spares, eh? When I got your initial email 2 months ago about getting in on the first batch, I had no cash. It looks like I should have some cash available in the next week or two. Are you sending out confirmation emails for batch #2 pretty soon? I think you bumped me into that list.

Keep up the good work. :thumbsup:

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Of course I wasn't serious :unsure: DUH! The 103 is a 10k and the 503 is the 50k, CLEARLY labeled in the parts spreadsheet you gave me... Geez... (This is where the emoticon of me poking myself would go if it existed)...

Edited by grizz
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Will the schematics be posted online? I am trying to be a bit more diligent about testing as I go and really want to make sure I get continuity on the tracks for the SMD devices. Since some of them run under the chips, it would be easier if I could have a PDF I can zoom down into (much like the MB6582 one). If no, I can make due but thought I'd ask :)

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