Plum Audio OCP Manual Download Page 2

OCP (SMD) Build guide (v1.0), 04/07/2022

 

 

www.plum-audio.com

 

PLUS? 

 
 
OCP is slightly different from other Ornament and Crime versions, a few 
improvements

 are added to OCP: 

 
VOR 

– V

ariable 

O

utputs 

R

ange make it easy to select different offsets for the outputs 

(Unipolar 0-10v, B/-5v and Asymmetric -3v to 7v), with the official firmware the 
module automatically chooses the best offset for each application and you can always 
change it with the dedicated VOR button. 
 

Extended Range 

– 

OCP

 

outputs can deliver 10 volts peak to peak when VOR is 

activated. 
 

Front USB Input 

– 

Can be used for easily accessing - MIDI to CV / CV to MIDI 

functions of the Hemisphere firmware (Captain MIDI). 
 

Atenuverters 

– 

With the 4 knobs you can scale and invert any modulation source you 

plugged to the CV inputs, when nothing is plugged in, those knobs are connected to an 
internal voltage source and can control many parameters of each application.

 

 

There are several steps in the assembly process: 

1.  Back side assembly

 

2.  Front side assembly (UI parts)

 

3.  Firmware Installation and Calibration

 

 

You will need those tools for the assembly process:  

1.  Soldering Iron and high quality soldering wire 
2.  DMM - Multimeter 
3.  Cutter  
4.  Paper masking tape  
5.  USB cable (Type A to micro USB Type B) 

– Note that you are using a cable that 

is capable of transmitting data. 

6.  Computer with free USB port for Firmware installation. 

 

 
 
 
 
 
 

Summary of Contents for OCP

Page 1: ...e Ornament and Crime Polymorphic cv generator is one of the most versatile cv generator processor modules for Eurorack Ornament and Crime can load dozens of different apps for many uses If this is you...

Page 2: ...accessing MIDI to CV CV to MIDI functions of the Hemisphere firmware Captain MIDI Atenuverters With the 4 knobs you can scale and invert any modulation source you plugged to the CV inputs when nothing...

Page 3: ...using the types of tips that are appropriate for the specific soldering task This is to make the solder faster and get better and nicer results For this project I ll recommend to use 2 types of solder...

Page 4: ...s used to set or disable the VOR option of the hardware See further explanation later in this document 2 Back TRIG Pin headers 1 Row of 4 Pins For back TRIG_IN Interface These headers are connected to...

Page 5: ...re 6 Pogo Pins used to connect 3 pads from the bottom of the teensy board to the module board one pin is for reset and other two is to connect the USB data signals D and D first you need to remove the...

Page 6: ...hen the voltage is negative Use the black LED stands provided in the kit which allows the installation of the LEDs at the right height and provide support and insulation for the LED legs Place the LED...

Page 7: ...tate should indicate bipolar operation of the attenuverters and the pressed state will indicate unipolar operation At the bottom of the button there is a minus mark on one side this mark should be dir...

Page 8: ...nd solder all parts except the USB board 8 Before you solder the USB board connect a micro USB cable to the jack leave the other end unconnected push the pin headers of the USB board against the cable...

Page 9: ...he offset to Bi Polar 5v Uni Polar 0v to 10v or Asymmetric 3v to 7v Auto select of VOR offset when opening new app In official firmware only Envelopes Uni Polar LFO s Bi polar Sequencers and Quantizer...

Page 10: ...Correct display offset With the OLED provided there should be no offset problems you can skip to the next step 4 CV Outputs In the following 40 steps you will calibrate the CV outputs from the farthes...

Page 11: ...your new OCP and read Ornament and Crime firmware manual to understand how to operate it If you have problems questions or if you found mistakes in this document visit PlumAudio DIY First Aid group at...

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