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DD-EXP-BOM-REV1.0.1.pdf latest version for rev.1.0 add and YOU MUST ADD 2x TL071 and 1x 4.7uF MLCC capacitor RM5DD-EXP-BOM-REV1.0.0.xlsx (Old version) fore for rev.1.0
For all DDRM Expander : remove the 6N138 and buy 6N139 to avoid Midi issues (stucking notes)
BOM LATEST BOARD VERSION INFO
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the new PCB Version is 1.1 !! (midi noise fixed) it use following changes which affect the above BOM, you have to respect this: IC33 and IC37 is TL071 (DIP8) C166 not in BOM 4.7uF ceramic (MLCC) RM5 |
latest firmware
It's for all Expander versions
DDRM Expander VC Placement Guide V2 from Kevin Looney:
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Deckard’s Dream Expander FAQ and Build Guide V1-7.docx
Trimmer Values (was requested by a user)
SIG= 501 = 500Ohm
REF: 201 = 200R
0.2Khz =103 = 10K
2.5k = 103 = 10K
Further Build Infos (was requested by a user)
Distance between Panel and Slider/control PCB = 10mm
Distance between Controlpcb and analog pcb = 12mm
MIDI-NOISE FIX pictures:
only for DIY PCB Version 1.0
is fixed in DIY PCB Version 1.1
If you want a fix of your factory assembled Version, contact me
Click expand for Pictures from rev1.0 pcb Modification FIX
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Addional pics 2021:
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Power LED Installation:
remove the 12V LED from the Card PCB and drill a 4,5mm hole in the frontpanel - which is the standard size for 3mm LED-holders (available in most electronic shops)
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