MXMXMX

WikiÊ and BOM \n

Original Github

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Original O&C Build guide

\nAlternative firmware options for O&C \n \ntheÊOrnament & CrimeÊfirmware is a collaborativeÊopen-sourceÊproject by Patrick Dowling (aka pld), Max Stadler (aka mxmxmx) and Tim Churches (aka bennelong.bicyclist). It (considerably) extends the original firmware for the Ornament & Crime (o_C) DIY eurorack module, designed by mxmxmx. \n

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• the original o_C module was designed to perform a single function: a digital, quantising version of the classicÊanalogue shift registerÊ(ASR).
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• there is still aÊquantising ASRÊ(analogue shift register) function in the current Ornament & Crime firmware, now namedÊCopierMaschine,Êbut several other ÒappsÓ have been added, incl. quantisers, sequencers, LFOs, random/chaotic CV generators, and so on. These apps are selectableÊon-the-fly, without having to reboot the module or toggle the power.
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• the o_C module, and the firmware for it, break new ground as a polymorphic module: a generic set of inputs and outputs are provided, and the textual OLED display is used to permit re-mapping of these inputs and outputs for each app, and in some cases, for each of the four channels within each app. The o_C module does not purport to be the paradigmatic pinnacle of polypurpose Ñ in fact, as noted above, it was originally designed to fulfil just one purpose (ASR) Ñ but together with the much-expanded firmware for it, we hope it provides an interesting and useful early step in the evolution of such multi-purpose modules.
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\nThe apps currently available in Ornaments & Crimes are: \n

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• CopierMaschineÊis an enhanced version of the original quantising digital emulation of a four stageÊanalogue shift registerÊ(ASR).
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• Harrington 1200Êprovides basic neo-RiemannianÊTonnetz transformationsÊof triadic chords, triggered by the digital (gate/trigger) inputs.
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• AutomatonnetzÊcombines Tonnetz transforms with aÊÒvectorÓ sequencerÊ- it can be both a chord sequencer and a melody sequencer, but not of the usual kind.
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• QuantermainÊis aÊquad pitch quantiserÊfor external voltages, with editable scales; it can do clocked (trigger-driven) quantising, or continuous quantising, with a latency of under 100 microseconds; it also features quad Turing Machines, May-Verhulst logistic maps or byte beats as optional, semi-random, internally generated CV sources.
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• Meta-QÊis a dual-channel quantiser, similar toÊQuantermain, but also offeringÊscale and note mask sequencing.
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• QuadraturiaÊis a wavetableÊquadrature LFO, based on the ÒEaster eggÓ in theÊMutable Instruments FramesÊmodule.
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• Low-rentsÊis a dualÊLorenz and RšsslerÊ(strange attractor) modulation generator, partially based on the ÒEaster eggÓ in theÊMutable Instruments StreamsÊmodule.
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• PiquedÊis a quad voltage-controlledÊenvelope generator, based on envelope generator code from theÊMutable Instruments PeaksÊmodule, but extending it with voltage control, additional envelope types, including re-triggering (looping) envelopes, additional segment shapes, adjustable trigger delays, and a unique Euclidean Òtrigger filterÓ which turns the app into a Euclidean rhythm generator which can output envelopes, not just gate or trigger pulses.
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• SequinsÊis a dual-channelÊstep sequencerÊoffering 4 ÒtracksÓ of up to 16 steps each; tracks can themselves be sequenced.
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• Dialectic Ping PongÊis a quad bouncing ballÊenvelope generator, based on a hidden mode of theÊMutable Instruments PeaksÊmodule.
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• Viznutcracker, sweet!Êis a quadÊÒbyte beatÓ equation generator, which can be used as an audio source to generate curious but often interesting 8-bit noises and tunes, or which can be clocked by an external source to produce Òbyte beatÓ control voltage sequences. ÒByte beatsÓ were firstÊdescribedÊin 2011 by viznut (aka Ville-Matias HeikkilŠ).
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• Acid CurdsÊis both a chord quantiser (sometimes called a Òharmonic quantiserÓ for external pitch voltages), and aÊchord progression sequencer.
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• ReferencesÊis an utility app that outputs specificÊreference voltagesÊon each channel to help tune or calibrate VCOs and other modules. It also includes a high-precisionÊfrequency meterÊand note tuner, a high-precision BPM (beats per minute)Êtempo meter, and aÊclosed-loop calibrationÊmode.
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