{"title":"MUTATED NON EURORACK","description":"\u003cp\u003eEmilie GIllet's non Eurorack open source designs\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/\"\u003eGithub\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"mutated-eurorack-module-tester-pcb-v0-2","title":"MODULE TESTER","description":"\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/bbf\/\"\u003eGithub\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eNew updated version of the MI Module Tester pcb\u003c\/p\u003e\n\u003cdiv itemtype=\"http:\/\/schema.org\/Article\" itemscope=\"itemscope\" class=\"document\" role=\"main\"\u003e\n\u003cdiv itemprop=\"articleBody\" class=\"section\"\u003e\n\u003ch2 id=\"overview\"\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eSeveral problems were faced during the development of our Eurorack modules:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHow to power and test a module during development? Bench-top power supplies are cumbersome (especially for projects requiring 3 supply rails) and standard test equipment is sometimes useless or frustrating for quantities like musical notes or V\/Oct scales. On the other extreme of the scale, who would run the risk of putting a half-built prototype in a rack loaded with thousands of euros worth of modules?\u003c\/li\u003e\n\u003cli\u003eWhat kind of setup to use for factory testing?\u003c\/li\u003e\n\u003cli\u003eHow to take a project away from the lab without carrying heaps of \"dependencies\"?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe solved this the Mutable Instruments way, rolling up our sleeves and designing a simple box able to provide power and all kinds of test signals (clocks, gates, CVs, audio tones) to a module. This tool is made available under cc-by-sa (hardware) and GPL (firmware) licenses.\u003c\/p\u003e\n\u003ch2 id=\"building-it\"\u003eBuilding it\u003c\/h2\u003e\n\u003ch3 id=\"schematics-and-layout\"\u003eSchematics and layout\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/static\/schematics\/Module-Tester-v01.pdf\"\u003eSchematics.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eEagle .brd\/.sch files hosted on\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/github.com\/pichenettes\/module_tester\/tree\/master\/module_tester\/hardware_design\/pcb\"\u003egithub\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/static\/images\/module_tester-v01_top.pdf\"\u003eTop\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/static\/images\/module_tester-v01_bottom.pdf\"\u003ebottom\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eassembly.\u003c\/p\u003e\n\u003ch3 id=\"bom\"\u003eBOM\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/docs.google.com\/spreadsheet\/pub?key=0Ai4xPbRS5YZjdEtCeHdGVDhQWHJOc2w1ZFN3ZjlhRHc\u0026amp;output=html\"\u003eBill of Materials\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 id=\"assembly-notes\"\u003eAssembly notes\u003c\/h3\u003e\n\u003cp\u003eThe large capacitors on the bottom of the board should be bent and rest against the board (rather than be mounted vertically as it was done on Ambika). The same thing applies to the NP capacitors on the top side. See this picture:\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/static\/images\/tester-540x326.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3 id=\"firmware\"\u003eFirmware\u003c\/h3\u003e\n\u003cp\u003eFuses:\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003eEFUSE = 0xfd ; HFUSE = 0xd4 ; LFUSE = 0xff\u003c\/code\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/static\/firmware\/module_tester.hex\"\u003ePre-compiled .hex file\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/pichenettes\/module_tester\/\"\u003eSource code\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eBuild with\u003cspan\u003e \u003c\/span\u003e\u003ccode\u003emake -f module_tester\/makefile bootstrap\u003c\/code\u003e.\u003c\/p\u003e\n\u003ch3 id=\"calibration\"\u003eCalibration\u003c\/h3\u003e\n\u003cp\u003eSet the CV output to \"2 Oct arpeggio\" with a period of 2s or 5s. It cycles between a 1V output and a 3V output. Adjusts the two trimmers to accurately get these voltages. Note that the MCP4822's linearity is not fantastic - so don't be surprised to get 1V and 1.997V or 2.003V when you change the CV output to \"1 Oct arpeggio\". The chance is, the analog circuitry on the other end is much less precise than that anyway!\u003c\/p\u003e\n\u003ch2 id=\"user-manual\"\u003eUser manual\u003c\/h2\u003e\n\u003ch3 id=\"power-generation\"\u003ePower generation\u003c\/h3\u003e\n\u003cp\u003eThe tester must be powered by a 12V\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eexternal power supply (Wall-wart) with a 2.1mm jack. The red stripe of the ribbon cable (indicating the -12V pins) must be oriented like on this picture:\u003cspan\u003e \u003c\/span\u003e\u003cimg src=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/static\/images\/d23c8bc7933ece1171e84f4adb5137_crop.jpeg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eBecause the tester uses half-wave rectification, and input capacitors and heatsinks of moderate size, it is not recommended to draw more than 200mA from the supply rails.\u003c\/p\u003e\n\u003ch3 id=\"features\"\u003eFeatures\u003c\/h3\u003e\n\u003cp\u003eThe tester provides 4 channels of signal generation: clock, gate, CV (LFO or stepped notes), and audio. The tester provides 2 channels of signal analysis: audio signal frequency measurement (with display in Hz, Note units, or intervals), and gate\/clock timing measurement.\u003c\/p\u003e\n\u003ch3 id=\"modifying-settings\"\u003eModifying settings\u003c\/h3\u003e\n\u003cp\u003eEach of the 4 signal generation and 2 signal analysis functions is materialized by an output or input jack, a LED, and a button. To modify the settings of a generator\/analyzer, press the button under its I\/O jack. The LED indicates which generator\/analyzer is being configured. The display shows a list of parameters. Turn the encoder to scroll through the list. Click the encoder to modify an option. Notice that the '\u0026gt;' arrow is now displayed in front of the value. Turn the encoder to modify the value. Click the encoder to confirm. For example, to modify the frequency of the audio signal generator to A3, press the AUDIO OUT button. The display shows:\u003c\/p\u003e\n\u003cpre\u003e\u003ccode\u003e\u0026gt;shape      sine\n freq.        C5\n\u003c\/code\u003e\u003c\/pre\u003e\n\u003cp\u003eTurn the encoder to select \"freq.\":\u003c\/p\u003e\n\u003cpre\u003e\u003ccode\u003e shape      sine\n\u0026gt;freq.        C5\n\u003c\/code\u003e\u003c\/pre\u003e\n\u003cp\u003eClick the encoder to modify the value:\u003c\/p\u003e\n\u003cpre\u003e\u003ccode\u003e shape      sine\n freq.      \u0026gt; C5\n\u003c\/code\u003e\u003c\/pre\u003e\n\u003cpre\u003e\u003ccode\u003e shape      sine\n freq.      \u0026gt; A3\n\u003c\/code\u003e\u003c\/pre\u003e\n\u003cp\u003eClick the encoder to confirm.\u003c\/p\u003e\n\u003cpre\u003e\u003ccode\u003e shape      sine\n\u0026gt;freq.        A3\n\u003c\/code\u003e\u003c\/pre\u003e\n\u003ch3 id=\"settings-reference\"\u003eSettings reference\u003c\/h3\u003e\n\u003ch4 id=\"clock-signal-generator\"\u003eClock signal generator\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTempo\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the tempo of the clock, in beats per minute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the number of clock ticks per beat. For example, a tempo of 120 beats per minute with 8 ticks per beat corresponds to a clock frequency of 960 ticks per minute (16 Hz).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the duration or duty cycle of a clock pulse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMIDI\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallows the clock rate to be controlled by an external computer or sequencer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 id=\"gate-signal-generator\"\u003eGate signal generator\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeriod\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the period of the signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the duration or duty cycle of a gate pulse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMIDI\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallows the gate signal to be generated from an external keyboard. In gate mode, the signal is high whenever a key is pressed on the keyboard. In trigger mode, a pulse is emitted every time a key is pressed - irrespectively of the duration of the note.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 id=\"control-voltage-generator\"\u003eControl Voltage generator\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMode\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtrols the output waveform: triangle, square, ramp up, ramp down, sine, 1 octave arpeggio (alternates between 1V and 2V), 2 octave arpeggio (alternates between 1V and 3V), chromatic scale (goes from 1V to 2V by 1\/12V increments).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeriod\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtrols the period of the generated signal or sequence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econtrols the amplitude and polarity of the signal: bipolar signals with a 2V, 4V or 10V amplitude; unipolar signals with a 1V, 2V or 5V amplitude. This setting is ignored when one of the arpeggio\/scale modes are selected.\u003c\/li\u003e\n\u003cli\u003eMIDI allows the voltage produced by this generator to be controlled by a MIDI message from an external keyboard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 id=\"audio-generator\"\u003eAudio generator\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eselects one of 4 waveforms: saw, square, triangle, sine wave.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eselects the signal frequency. A few fixed frequencies are available, the remaining values are musical notes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvel.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallows an external signal to \"shape\" the tone produced by this generator. In gate mode, the signal is on whenever the signal at the Gate In input is high. In trigger mode, the signal has a decreasing envelope, which is retriggered on raising edges of the\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eGate In\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003esignal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMIDI\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallows the audio generator to be played from a keyboard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 id=\"audio-input\"\u003eAudio input\u003c\/h4\u003e\n\u003cp\u003eThe encoder selects between 3 units:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency (Hz)\u003c\/li\u003e\n\u003cli\u003eNote and detuning (MIDI standard + cents)\u003c\/li\u003e\n\u003cli\u003eInterval. In this mode, the musical interval between the current stable note and the previously played note is measured. This interval is expressed in cents. 1 octave = 1200 cents.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 id=\"gate-input\"\u003eGate input\u003c\/h4\u003e\n\u003cp\u003eThe first line displays either the period, frequency, and tempo of the incoming signal. The second line displays either the duty cycle, or the duration of the positive edge of the signal. Note that the Gate Input LED blinks with the input signal.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCode (AVR projects): GPL3.0.\u003c\/p\u003e\n\u003cp\u003eCode (STM32F projects): MIT license.\u003c\/p\u003e\n\u003cp\u003eHardware: cc-by-sa-3.0\u003c\/p\u003e\n\u003cp\u003eBy: Emilie Gillet (\u003ca href=\"mailto:emilie.o.gillet@gmail.com\"\u003eemilie.o.gillet@gmail.com\u003c\/a\u003e)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"MUTATED NON EURORACK","offers":[{"title":"pcb only","offer_id":57194060022024,"sku":"110959","price":12.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/0902\/6312\/files\/module-tester-new-front.jpg?v=1776361410"},{"product_id":"ambeeka-desktop-polysynth","title":"AMBEEKA \/desktop 6 voice polysynth","description":"\u003ch2\u003ehybrid MIDI polysynth and voicecard host.\u003c\/h2\u003e\n\u003cp\u003eAmbeeka consists of a compact motherboard serving as a “host” for up to 6 sound synthesis voicecard. While this design is primarily intended to be a flexible hybrid polysynth, it could also be used as a drum module\/drum machine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTo build an Ambeeka you will need the main pcb and 6 voice cards, unless you're using the smd dual svf cards then you need only 3.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe motherboard comprises 6 audio outputs, each one connected to a voicecard ; a global mono output ; a pair of MIDI input\/output ; a SD card slot ; a 5V\/8V\/-8V power supply capable of delivering 150mA on the 8V rails and 350mA on the 5V rail ; the master MCU and the user interface elements.\u003c\/p\u003e\n\u003cp\u003eThe voicecards (a pair of each being attached to the 3 voicecard ports) are SPI slaves, they receive note and modulation data from the motherboard ; and output monophonic audio, ideally 1V pp. 3 designs of voicecards implementing a refined version of the Shruthi-1 engine are provided.\u003c\/p\u003e\n\u003cp\u003eEach of those use a different filter (4-Pole with LM13700, 4-Pole with SSM2164, 2-Pole SVF with SSM2164).\u003c\/p\u003e\n\u003cp\u003eOriginal developer: Emilie Gillet.\u003c\/p\u003e\n\u003cp\u003eThe firmware is released under a GPL3.0 license. It includes a variant of the formant synthesis algorithm used in Peter Knight’s Cantarino speech synthesizer.\u003c\/p\u003e\n\u003cp\u003eThe PCB layouts and schematics, documentation, analyses, simulations and 3D models are released under a Creative Commons cc-by-sa 3.0 license.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/barnabywalters\/ambika-enclosure\"\u003eGithub for parts for a CNC-routed wooden enclosure for the Mutable Instruments Ambika polyphonic synthesizer\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/ambika\/manual\/\"\u003eAmbeeka manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuild Instructions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/ambika\/mobo\/\"\u003eMain board\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/ambika\/smr4\/\"\u003eSMR 4\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/ambika\/voicecards\/\"\u003eother voice cards\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/ambika\/mechanical\/\"\u003emechanical assembly\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/ambika\/firmware\/\"\u003efirmware setup\u003c\/a\u003e\u003c\/p\u003e","brand":"MUTATED NON EURORACK","offers":[{"title":"Ambeeka main pcb","offer_id":57815873519880,"sku":null,"price":14.99,"currency_code":"GBP","in_stock":true},{"title":"Ambeeka 4P Voicecard pcb","offer_id":57194068148488,"sku":"100068-2","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Ambeeka Polivoks voicecard pcb","offer_id":57194068181256,"sku":"100068-3","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Ambeeka SMR-4 Voicecard pcb","offer_id":57194068214024,"sku":"100068-4","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Ambeeka SVF Voicecard pcb","offer_id":57194068246792,"sku":"100068-5","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Ambeeka Dual SVF smd Voicecard pcb","offer_id":57194068279560,"sku":"100068-6","price":4.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/0902\/6312\/files\/Ambeeka-square.jpg?v=1778679610"},{"product_id":"mutated-shroothy","title":"SHROOTHY (desktop monosynth)","description":"\u003cpre\u003eShroothy, a digital\/analog hybrid MIDI monosynth.\n\nThis project is a redesign of the original Shruti-1, with a spec'ed up CPU,\nand a focus on easy upgrades\/modification of the analog section.\nThe ATMega644p allows new features in the firmware -- a larger selection of\noscillator algorithms, a bigger selection of wavetables, and a tiny sequencer.\n\nOriginal developer: Emilie Gillet (emilie.o.gillet@gmail.com)\n\nThe firmware is released under a GPL3.0 license. It includes a\nreimplementation of the formant synthesis algorithm used in Peter Knight's\nCantarino speech synthesizer.\n\nThe PCB layouts and schematics (in \/hardware\/shruthi\/design\/pcb)\nare released under a Creative Commons cc-by-sa 3.0 license - except for some\ndiscontinued filter boards which were released under a cc-by-nc-sa 3.0 license.\n\nDocumentation, analyses, simulations and 3D models are released under a\nCreative Commons cc-by-sa 3.0 license.\u003c\/pre\u003e\n\u003cp\u003eBuild info \/options\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/shruthi\/digital\/\"\u003eMain board\u003c\/a\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/shruthi\/digital_xt\/\"\u003eXT Expanded main board (you don't need the small main board if you get this)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/shruthi\/dsp\/\"\u003eDSP filter board\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/cs80\/cs80_shruthi\"\u003eCS 80 filter board\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/shruthi\/smr4mkii\/\"\u003eSMR 4 mkII filter board\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/shruthi\/4pm\/\"\u003e4 Pole Mission filter board\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/shruthi\/delay\/\"\u003eLP2 filter board\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/shruthi\/ssm2044\/\"\u003eSSM2044 filter board\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/shruthi\/svf2\/\"\u003eDual SVF filter board\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/shruthi\/polivoks\/\"\u003ePolivoks filter board\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlying Kick (Sidekick)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Flying kick is a simple circuit, of dimensions similar to those of the \u003ca href=\"https:\/\/web.archive.org\/web\/20120504001326\/http:\/\/mutable-instruments.net\/shruthi1\/build\/digital\"\u003eShruthi-1 digital board\u003c\/a\u003e, which allows you to drive one of the Shruthi-1 filters without all the hassles of \u003cspan class=\"caps\"\u003eMIDI\u003c\/span\u003e, menus, and modulation matrices. Pick your favorite filter board, snap the Sidekick on top of it, plug in an external audio source (or not) and get ready for some filtering action!\u003c\/p\u003e\n\u003cp\u003eThe Flying kick comprises 2 square\/triangle LFOs and 2 AR envelopes, which are assigned to the \u003cspan class=\"caps\"\u003eVCF\u003c\/span\u003e frequency and the \u003cspan class=\"caps\"\u003eVCA\u003c\/span\u003e gain. The LFOs can oscillate at audio rates, allowing them to be used as droning oscillators, a FM source or ring-modulators. The envelopes are triggered by a dedicated button.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg width=\"720\" height=\"482\" src=\"https:\/\/web.archive.org\/web\/20120504001326im_\/http:\/\/mutable-instruments.net\/static\/img\/sidekick_ctrl.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eFrom top to bottom, left to right, the knobs are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter cutoff.\u003c\/li\u003e\n\u003cli\u003eAR envelope 1 filter modulation amount.\u003c\/li\u003e\n\u003cli\u003eLFO1 filter modulation amount.\u003c\/li\u003e\n\u003cli\u003eFilter resonance.\u003c\/li\u003e\n\u003cli\u003eAR envelope 2 \u003cspan class=\"caps\"\u003eVCA\u003c\/span\u003e modulation amount. When turned counter-clockwise, the gain is at a flat 50%. When turned clockwise, the gain matches the AR envelope 2 value.\u003c\/li\u003e\n\u003cli\u003eLFO2 \u003cspan class=\"caps\"\u003eVCA\u003c\/span\u003e modulation amount.\u003c\/li\u003e\n\u003cli\u003eLFO1 rate.\u003c\/li\u003e\n\u003cli\u003eAR envelope 1 attack speed.\u003c\/li\u003e\n\u003cli\u003eAR envelope 1 release speed.\u003c\/li\u003e\n\u003cli\u003eLFO2 rate.\u003c\/li\u003e\n\u003cli\u003eAR envelope 2 attack speed.\u003c\/li\u003e\n\u003cli\u003eAR envelope 2 release speed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe two WF switches are used to switch the waveform (square or triangle) of the \u003cspan class=\"caps\"\u003eLFO\u003c\/span\u003e 1 and 2 respectively.\u003c\/p\u003e\n\u003cp\u003eThe 4 tact switches have the following function, from left to right:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTemporarily routes LFO1 to the audio input of the filter (allows LFO1 to be heard as an oscillator).\u003c\/li\u003e\n\u003cli\u003eTemporarily routes LFO2 to the audio input of the filter (allows LFO2 to be heard as an oscillator).\u003c\/li\u003e\n\u003cli\u003eTriggers AR envelope 1.\u003c\/li\u003e\n\u003cli\u003eTriggers AR envelope 2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eHacking is fun, here are some cool hackey things you can do with the Sidekick:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolder a pin header and add a jumper at the pads labelled “Drone lock” to constantly route the LFOs to the audio input of the filter.\u003c\/li\u003e\n\u003cli\u003eConnect a jack and a sustain pedal to the pads marked \u003cstrong\u003eKicks\u003c\/strong\u003e and \u003cstrong\u003eKinks\u003c\/strong\u003e to trigger the AR envelopes with your cat feet.\u003c\/li\u003e\n\u003cli\u003eUse \u003ca href=\"https:\/\/web.archive.org\/web\/20120504001326\/http:\/\/www.sparkfun.com\/products\/8430\"\u003eF\/F breadboard jumper wires\u003c\/a\u003e to rewire the mapping of the CV signals to cutoff\/frequency\/VCA\/CV1\/CV2 in the \u003cstrong\u003eSmurf modular\u003c\/strong\u003e mini patch zone. Because we all know you want to hardwire the resonance to +5V.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MUTATED NON EURORACK","offers":[{"title":"Shroothy main pcb","offer_id":57194069393672,"sku":"100070-1","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy XTC main pcb","offer_id":57815744577800,"sku":null,"price":13.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy Digital filter pcb","offer_id":57194069459208,"sku":"100070-3","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy CS80 Filter pcb","offer_id":57194069524744,"sku":"100070-5","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy SMR-4 mkII filter pcb","offer_id":57194069623048,"sku":"100070-8","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy 4P Mission filter pcb","offer_id":57194069557512,"sku":"100070-6","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy LP Delay filter pcb","offer_id":57194069491976,"sku":"100070-4","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy SSM filter pcb","offer_id":57194069655816,"sku":"100070-9","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy Dual SVF filter pcb","offer_id":57194069688584,"sku":"100070-10","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy Polivoks filter pcb","offer_id":57194069590280,"sku":"100070-7","price":4.99,"currency_code":"GBP","in_stock":true},{"title":"Shroothy Flying Kick (Sidekick)","offer_id":57194069426440,"sku":"100070-2","price":4.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/0902\/6312\/files\/sHROOTHY-FRONT-sq.jpg?v=1778678890"},{"product_id":"midipal-pcb","title":"MIDIPAL \/midi processor","description":"\u003cp\u003e\u003cspan\u003eThe MIDIpal is a powerful MIDI processor - like a multi-effect operating on MIDI data! It features 19 different MIDI \"apps\", ranging from MIDI debugging or routing utilities (monitoring messages, remapping a channel to another one...) to complex compositional or inspirational tools like arpeggiators or pattern generators.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned by Emilie Gilet for Mutable Instruments\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/pichenettes.github.io\/mutable-instruments-diy-archive\/midipal\/manual\/\"\u003e\u003cspan\u003eMANUAL\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"MUTATED NON EURORACK","offers":[{"title":"Default Title","offer_id":57194340811016,"sku":"190939","price":7.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1030\/0902\/6312\/files\/PSX_20210716_162424-scaled.jpg?v=1776361827"}],"url":"https:\/\/pushermanproductions.com\/collections\/mutated-non-eurorack.oembed","provider":"Pusherman","version":"1.0","type":"link"}