Modules – Grids – User manual
Contents
1. 12V 12V 5V supply 2x8 connector consuming 1mA from the 12V rail and 25mA from the 5V rail the 12V rail is actually not used The red stripe of the ribbon cable must be oriented on the same side as the Red stripe marking on the printed circuit board Grids pattern generation algorithm Grids is a 3 channel algorithmic rhythmic pattern generator based on data and models extracted from actual BD drum loops Two steps are involved in the generation of the drum patterns Step 1 Synthesizing a pattern from the drum map Synthesizing lo Map X a TTIE ALLIT 4 PURGE Eee A collection of drum loops has been spatially organized and compressed into a 2 dimensional map Using interpolation techniques any pair of X Y coordinates can be translated into a rhythm with smooth morphing from one rhythm into the other Step 2 and sculpting it Sculpting Fill ATTE ES o PRRRRERRER EERE 20 PERE RERR EERE RRE Once a rhythmic skeleton is read from the map variations can be generated by controlling the note density of each of the three channels gradually morphing the pattern from a sparse backbone to a frantic pattern Controls E PS a k cua 2e eC 2 JO RESET TAP roset ees er ererrererecsereseerees 3 Mutable Instruments A Internal clock rate Ranges from 40 BPM to 240 BPM When turned fully counter clockwise the internal clock is disabled and the unit expect2. Recommended level 0 to 5V though higher voltages are accepted 3 4 5 6 MAP X MAP Y CHAOS FILL Control voltages added to the value of the eponymous knob The minimum position of the knob corresponds to OV and its maximum position to 5V 7 TRIG Trigger outputs for each of the 3 channels Triggers have a 5V level and a duration of 1ms 8 ACC Accent outputs for each of the 3 channels The accent indicates the structurally important steps in the pattern and can be fed straight into xox style modules They have a 5V level and a duration of ims Options Unplug all CV inputs and hold the TAP reset button for half a second to adjust Grids options The switch stays illuminated Hold the button again for half a second when you are done Reference card Clock resolution Clock resolution is set by E1 The 3 LEDs indicate the current value of this setting 4 8 and 24 ppqn respectively Grids does not try to regenerate a high resolution clock from a low resolution clock think of it as a form of quantization Thus using the 4ppqn clock might distort the patterns which use 32 th notes and using 8ppqn might or 4ppqn might distort the patterns which use triplets Tap tempo vs reset The tap tempo beat indicator button can be configured instead as a reset button pattern start indicator Turn E2 to switch between these two modes e LEDs off Tap to reset to the beginning of the pattern e LEDs on Tap to set
3. Grids user manual Overview Download the quick start guide Mutable Instruments Grids is a 3 channel trigger generator specialized in the creation and sculpting of rhythmic patterns At the core of Grids is a map which has been obtained through machine learning techniques of the drum patterns used in a large collection of electronic music tracks and drum loops The skeleton and structure of the rhythm is programmed by selecting its X and Y coordinates on the map with smooth interpolation morphing between points Once this skeleton is in place variations can be generated by controlling the event density of each of the three channels gradually morphing from a sparse backbone to a frantic pattern X Y map position and the density of the 3 channels are all CV controllable allowing rhythmic variations to be created by any modulation source In contrast to Euclidean sequencers which are purely algorithmic Grids has learned patterns from actual data and with the right settings might generate a breakbeat or an influential Kraftwerkian beat Most patterns are best played with channel 1 BD channel 2 SD channel 3 HH but experimentation with other sound sources is of course encouraged Grids has a built in clock or it can accept external clock signals of variable resolution Installation Mutable Instruments Grids is designed for Eurorack synthesizer systems and occupies 16 HP of space It requires a
4. able Instruments warranty for one year following the date of manufacture This warranty covers any defect in the manufacturing of this product This warranty does not cover any damage or malfunction caused by incorrect use such as but not limited to power cables connected backwards excessive voltage levels or exposure to extreme temperature or moisture levels The warranty covers replacement or repair as decided by Mutable Instruments Please contact our customer service support mutable instruments net for a return authorization before sending the module The cost of sending a module back for servicing is paid for by the customer Mutable Instruments encourages modding and hacking but we will not service modified units or provide any assistance in the realization of mods We provide an unbricking firmware reinstallation and reinitialization service in the event of a failed firmware upgrade procedure We do not unbrick devices if a custom firmware has been installed on them Olivier Gillet Mutable instruments SARL 2011 2013 Except where otherwise noted content on this site is licensed under a cc by sa 3 0 license
5. nputs In this case the output stays high for the whole duration of the clock s positive cycle It is thus possible to alter the gate length by driving Grids from a clock module with a duty cycle parameter or from a square VCO with pulse width control The internal clock has a fixed 50 duty cycle To change the trig gate configuration turn C2 MAP Y e LEDs off Outputs are triggers e LEDs on Outputs are gates Alternate output layout The row of 3 ACCENT outputs can be reconfigured to serve other purposes The normal layout is ACC1 ACC2 ACC3 But it can be reconfigured as ACC CLK RST Where ACC is a global accent output which is high whenever one of ACC 1 ACC 2 or ACC 3 is high CLK is a clock output mirrors the clock input or is the internal clock signal whichever is in use and RST is a reset trigger To reconfigure the outputs and take advantage of the Clock Reset outputs turn the D CHAOS knob e LEDs off ACC 1 ACC 2 ACC 3 e LEDs on ACC CLK RST Hidden bits and MIDI The board has two additional outputs one mirroring whichever clock signal is used external input or internal and the other producing a random trigger at each step The pin labelled RX gt can be hooked to a MIDI reception circuit optocoupler Grids receives MIDI clock and start interpreted as sequencer reset messages The ISP connector allows firmware reprogramming Warranty This product is covered by Mut
6. s a clock signal on its CLOCK input B Tap reset This button acts as a tap tempo and flashes on each beat Tap it twice or more to set the tempo The duration between the two most recent taps defines the duration of a beat Once the tempo has been programmed with the tap tempo button the CLOCK knob is locked and has no effect on the rhythm Tap just once on the Tap button to unlock the CLOCK knob C1 C2 Map coordinates These two knobs specify the region of the rhythm map from which is derived the structure backbone of the rhythm D Chaos amount This button controls the amount of random perturbations applied to the three FILL parameters When set to a high value rolls ghost notes will be randomly added to the pattern E1 E2 E3 Fill rate These knobs indicate how dense the rhythmic pattern is for each of the three channels instruments Turn counter clockwise to simplify the pattern to the point of muting the channel entirely turn clockwise to add notes until the pattern is entirely filled The position of the added removed notes depends on the rhythmic backbone specified by the X and Y parameters Inputs and outputs 1 CLOCK External clock input The external clock is ignored unless the CLOCK knob is set to its minimum value and tap tempo is reset Recommended level o to 5V though higher voltages are accepted 2 RESET Pattern reset input A raising edge on this input resets the rhythmic pattern to its first step
7. the tempo Swing Turn E3 to enable or disable swing on the internal clock When enabled swing is controlled by the CHAOS randomization setting which it replaces and affects the internal clock only The LEDs indicate the status of the swing setting e LEDs off Swing is disabled CHAOS works as a randomization control e LEDs on Swing is enabled on the internal clock CHAOS controls its amount It is not possible to add swing to a clock signal received on the CLOCK input and it is not possible to add swing in euclidean sequencer mode Euclidean sequencer mode Why have less when you can have more Grids can also work as a vanilla euclidean sequencer Turn C1 MAP X to switch between the euclidean sequencer mode and grids own flavor of pattern generation e LEDs off Grids is yet another euclidean sequencer e LEDs on Grids is back to drumming duties In euclidean sequencer mode the C1 C2 and D knobs control respectively the cycle length size of the pattern on channels 1 2 and 3 and the E1 E2 and E3 knobs control the fill rate The ACC outputs will spit a trigger on the first note of the pattern that is to say whenever the pattern completes a cycle Trig Gate output By default Grids produces trigger signals short ims pulses This behavior which is recommended for 808 or 909 like sound modules can be changed in order to produce gate signals more suitable for controlling envelopes or other modules CV i
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