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README.md

benjolin

  • this is a diy eurorack project based on rob hordijk's benjolin

modifications

  • an external audio input to filter
  • the pitch is voltage controllable in both oscillator
  • the frequency of low pass filter is voltage controllable
  • disconnect t2 to filter (you can still use cable to connect t2 to filter's cv input)
  • add a spst to switch the current input(p1 or -9~9v voltage with a potentiometer) to bc547

voltage

  • tri1 out: ~6Vpp
  • pul1 out: ~12Vpp
  • tri2 out: ~6Vpp
  • pul2 out: ~12Vpp
  • pwm out: ~18Vpp
  • main out: ~2Vpp

front side of pcb

back side of pcb

building & troubleshooting...

please check here for for more details.

acknowledgements

thanks rob's permission allows me to run benjolin's pcb in eurorack, which is a gift to the diy synth community and i am truly grateful for his dedication and kindness.

license

hardware: cc-by-sa-3.0 by: tseng kweiwen

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rob hordijk's benjolin in eurorack

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