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Rotating Clock Divider

Eurorack Module User Manual v1.0.1 to 1.0.2

4ms Pedals

Features

Divide-by-1 to Divide-by-64, on 8 output jacks

CV Rotate jack to shift divide-by amount on all jacks

CV Reset to reset/re-sync all jacks

Jumpers or optional break-out panel:

Select auto-reset (maximum 256 clocks)

Select maximum divide-by amount (8/16/32/64)

Gate or Trigger outputs

Count-up or Count-down mode

UART header

Connects to optional MIDI breakout panel

Arduino-compatible

ISP header

Connects to in-circuit programmer such as AVR ISP MKII for reprogramming code

Maximum input frequency 3kHz

4 H.P. Eurorack module

60mA power draw (+/-12V or +/-15V)

Jacks

Clock Input (3.5V to 15V clock, rising edge triggered) 

CV Rotate (0V to +5V input) 

CV Reset (5V to 15V trigger) 

Divided Clock Outputs (8 jacks): 

Divide-by (1+R) 

Divide-by (2+R) 

Divide-by (3+R) 

Divide-by (4+R) 

Divide-by (5+R) 

Divide-by (6+R) 

Divide-by (7+R) 

Divide-by (8+R) 

...where R is the CV Rotation (0 to 63)

Summary of Contents for rotating clock divider

Page 1: ...tputs Count up or Count down mode UART header Connects to optional MIDI breakout panel Arduino compatible ISP header Connects to in circuit programmer such as AVR ISP MKII for reprogramming code Maximum input frequency 3kHz 4 H P Eurorack module 60mA power draw 12V or 15V Jacks Clock Input 3 5V to 15V clock rising edge triggered CV Rotate 0V to 5V input CV Reset 5V to 15V trigger Divided Clock Out...

Page 2: ... Range Jumpers Total Rotatable Divide by range Divide by amount on jacks with no voltage applied to CV Rotate Jack tables 2 5 3 4 in in 1 to 8 1 to 8 in no 1 to 16 9 to 16 no in 1 to 32 17 to 24 no no 1 to 64 33 to 40 Jumpers 5 and 6 Auto reset Auto Reset Jumpers Auto reset with Divide by range of 5 6 1 to 8 1 to 16 1 to 32 1 to 64 in in 32 64 128 256 in no 16 32 64 128 no in 24 48 96 192 no no no...

Page 3: ...en on the input clock s rising edge Point of interest In Gate mode with odd numbered divisions the jack will turn ON on a rising edge of the input clock and then will turn OFF on a falling edge For example the 5 jack ought to stay on for 2 5 clock pulses meaning it should go OFF somewhere between the rising edge of clock pulses 2 and 3 Right in between these is the falling edge of pulse number 2 s...

Page 4: ... 30 31 32 1 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 2 X X X X X X X X X X X X X X X X 3 X X X X X X X X X X X 4 X X X X X X X X 5 X X X X X X X 6 X X X X X X 7 X X X X X 8 X X X X CV Rotation By applying a CV signal to the CV Rotate jack the clock divisions will rotate throughout the output jacks see table 2 For example if you apply just over 1 0V Jack 1 R Red will go from ...

Page 5: ...amounts at each jack with max divide by amount set to 16 Jumper 3 in no Jumper 4 Jacks Voltage at CV Rotate Jack 0 7V 0 7V 1 0V 1 0V 1 3V 1 3V 1 7V 1 7V 2 0V 2 0V 2 3V 2 3V 2 7V 2 7V 3 0V 3 0V 3 3V 3 3V 3 7V 3 7V 4 0V 4 0V 4 3V 4 3V 4 7V 4 7V 5 1V 5 1V 5 8V 5 8V 1 R Red 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 2 R Orange 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 3 R Yellow 11 12 13 14 15 16 1 2 3 4 5 6...

Page 6: ...4 25 26 27 28 29 30 31 32 1 2 3 4 5 8 R White 23 24 25 26 27 28 29 30 31 32 1 2 3 4 5 6 Table 5 Divide by amounts at each jack with max divide by amount set to 64 no Jumper 3 or 4 Jacks Voltage at CV Rotate Jack 0 5V 0 68V 0 86V 1 04V 1 22V 1 38V 1 54V 1 70V 1 86V 2 02V 2 18V 2 36V 2 52V 2 68V 2 82V 3 00V 1 R Red 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 2 R Orange 34 35 36 37 38 39 40 41 42...

Page 7: ... div by 4 div by 3 div by 2 CLOCK INPUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 4 5 7 8 10 11 13 14 16 1 3 5 7 9 11 13 15 1 3 6 8 11 13 16 1 4 7 10 13 16 1 4 8 11 15 1 5 9 13 TRIGGER MODE UP BEAT COUNTING NO JUMPERS IN 7 8 GATE MODE DOWN BEAT COUNTING BOTH JUMPERS 7 8 Indicates f...

Page 8: ...i v b y 4 div by 5 d i v b y 6 div by 7 d i v b y 8 In this metaphorical illustration applying a voltage to the Rotate jack makes the outer circle of jacks rotate around the inner circle of divided clock signals For a technical chart of the exact voltages needed to cause exact rotations see the User Manual 1V applied to CV Rotate Jacks shifted 1 unit clockwise 1 R div by 2 2 R div by 3 3 R div by ...

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