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Date | Autor | change | |
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15.Jan.2018 | LED-man | 1.1 BOM added, glitch issue, page design changes | |
20.April 2018 | LED-man | github link added, firmware link, pcb version added | |
09.May 2018 | LED-man | Firmware Versions updated, REV2.0 pcb page added | |
18.May 2018 | LED-man | Firmware 1.2.4 with patches added | |
25.July 2018 | LED-man | alfa3340 info, patcheditor links, firmware 1.2.5 | |
29. Aug 2018 | LED-man | power wiring page created on subpage | |
25. Oct 2018 | LED-man | update Firmware Versions, Stereo Output Mod | |
2020 | LED-man | general changes - structure of this page | |
10/2020 | LED-man | bug on breakoutboard - C3 polarity is wrong | |
10/2021 | LED-man | BOM outputboard - replace 6N138 to 6N139 |
Table of Contents
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Hi all, this is the place to find the latest building documents for Black Corporation's Deckard's Dream polyphonic synthesizer. Currently, this project is at rev 1.0, PCB's are currently being released to builders. (18.Oct. 2017) and are being constructed. A new PCB version rev. 2.1 was released end of 2018, this page is only for rev.1.x the REV.2.0 guide is here DDRM rev.2 guide |
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Technical Specs: (click to expand)
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Synthesizer features
Layer architecture
Master controls
Controls
Display
Connectors
Physical specifications* the DIY VERSION is different for the depth and weight
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Date | Location | Identified issue | Resolution |
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Oct 20, 2017 | PCB: Motherboard rev 1.0 | Steve Sommers - Capacitor C188 designation is duplicated. C186 is missing. | From Roman: |
Oct 21, 2017 | PCB: Voice card Rev 1.0 | Resistors R40, R45, R151 and R146 have space on the circuit boards, but there is nothing specified in the BOM | These are not used and were left in place for possible filter modifications. Leave the components spaces empty (do not put anything there). |
Nov 11, 2017 | PSU Board Rev 1.0 | DACs not initializing on some boards. Note: Updated in BOM 1.0.8 | PSU Board Changes per Roman: Change C12 to 1uf 6.3V or higher Change C13 - 330uf 6.3V or higher 8MM DIA /3.5 LS C13 increased delays the boot of +3.3v digital rail, c12 reduced makes 5v analog rail boot faster, Without change sometimes they don’t start, since digital 3.3v comes to DAC before 5v |
Dec 23, 2017 | All boards | Roman suggests that both power consumption, and heat reduction can be obtained by substituting all TL072/TL074 OPAmps with the lower current TL062/TL064. Roman also states that the pre-built units contained the TL062/TL064s | This was first suggested as a substitution for the voice cards only with TL072/TL074s being used on all other boards. However, Roman has since updated the BOM to use TL062/TL064s throughout. (REV1.0.9) |
Jan 15, 2018 | All Voiceboards | waveform glitch not the same like CS-80 | To apply the "glitch fix", you will need to solder two 1.0 Meg resistors per voice board, one for each oscillator. They can be easily added to the back side of the circuit board, so all existing components can remain unchanged. click to enlarge |
2.October 2020 | DIY version rev.1 only Breakoutboard PCB | Capacitor C3 - the polarity is wrong labeled on the PCB this affects the 5.2V power rail for the fan and USB. | remove the capacitor and install them with swapped polarity. you can use a new capacitor 15uF 10V/16V RM2mm max.5mm diameter (as before) ignore the schematics - there's a 100uF shown - but the BOM shows an 15uF capacitor thanks to all involved people to report this bug. |
10/2021 | all Versions | BOM failure | replace the 6N138 to 6N139 or you run in stucking notes (the 6N138 needs 4.5V but we only have 3.3V, the 6N139 runs fine with 3.3V) |
Bugtracker (not updated)
further bugs, issues, problems are reported here (here are user reported issues due to soldering failures or other issues reported too)
https://github.com/ffont/ddrm-issues/issues
(i prefer to visit the Facebook Deckardsdream Build Group)
Deckard's Dream Home and Store: http://www.deckardsdream.com
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for EU users: order from www.TME.eu standard parts, its cheaper as mouserthan Mouser
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According to Alfa, i spread the good new: After some common work last week with them on DD and AS3340, We can officially announce that Deckard is happy with theses chips please note, this parts are not present in the BOM and guides ! |
User Manual
Official Build Guide: http://www.deckardsdream.com/build.
Voice Card Assembly Document. This was created by Lysandre Follet, and has been tested as correct by a couple builders.
Backup from Assembly rev.1 guide: Build – DECKARD'S DREAM.pdf
Warning |
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some users reported that the board doesn´t fit in the case - the mainboard pcb is too big.. on the mainboard is on top and bottom a small 3-4mm pcb stripe, that need´s to be removed. |
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check the BOM for the quantity for the board and count each value, drop it in a small box or put the secure on your desk before you install.
OLED Display:
make sure your OLED folow this pinout VCC-GND-SCL-SDA, very often shows the shop the correct pinout but deliver another type.
AND short the shorten the pins on the display side (where the Frontpanel is) to prevent shorts to the Frontpanel., (some pins are too long and can touch the frontpanel)
if you cant source the correct display (pin) use restore legs and bend they - use cable shrink tube to protect this for shorts
Powersuply Warning
don't mix the external PSU bricks or you destroy your Device.
The Kijimi use a 24V DC PSU
DDRM v1 DIY use a 12V DC PSU
DDRM v2 DIY use a 12V DC PSU
Troubleshooting
a lot of users reported problems with slider calibration or display failures, auto tune.
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Tip |
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when you have trouble with your voicecards like a whistle on upper or lower card or wrong VCF... the calibration process is not perfect, swap this "faulty" voicecard with another card and run the calibration for the single voicecard not for all. if everything wents wrong: insert only one voicecard in Slot1, run calibration (not the tune function). when everything is fine, add the second card to slot 2 and run again calibration - on slot 2, insert card 3 and so on.. |
Firmware and Bootloader
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, Manuals moved to this Page:
check the download location: http://www.deckardsdream.com/downloads/ for updates, i prefer to wait few weeks before you install a newer version, or check the closed facebook group for comments.
official Firmware and Guide:
Firmware installation procedure/guide: Software Loading Procedure R0.9.3.docx
http://www.deckardsdream.com/downloads/DD-1.2.3.zip (updated factory presets file and an extra presets bank by Michael Rosner (comes as a BANK2))
latest Firmware 1.30April2019 and stable:
DD-FIRMWARE-REV1.3.0.zip this also contains the latest Bootloader !
latest 3.0 Bootloader:
DD-BOOTLOADER-REV3.0.hex.zip (unzip the file)
Menu Structure:
DD-MENU-STRUCTURE-REV1.0 (1).pdf
MIDI Chart (MIDI Control Change Message Mapping for the DDRM) http://www.deckardsdream.com/downloads/DD-MIDI-CHART-REV1.0.pdf
Modification
subpage:
Deckard's Dream Patch Editor is now available.
Demo (free) version allows opening bank, patch, and voice files and viewing the slider settings for each patch. You can also control DD remotely via MIDI. It has built-in keyboard control (using your computer keyboard) and a CS-80 style ribbon controller. Full version can save files also and randomize the patches.
Download link (Windows only):
https://drive.google.com/open?id=139IcCANbdjOIYvS6aVu7oSoUculzzEK2 DDRM Stereo Out Modification
Patch Editor
User Manual (PDF):
https://drive.google.com/open?id=1xMHwV3TBTWAK5WPEw8NV0F6aiztP5ZnF
Knowledge and other links
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https://www.facebook.com/groups/deckardsdream/
Usage:
to get the full power of your DDRM use a polyphone Midi Keyboard with poly aftertouch.
the DDRM can analyze the "new" MPE protocol over Midi.
just try a Roli Seaboard or a Linnstrument
more MPE devices are listed here: http://www.rogerlinndesign.com/other-mpe-controllers.html
Parts Resources:
Synthcube complete parts kits: http://synthcube.com/cart/ddrm-deckard-s-dream-kit
Thonk Group Buys for CEM3340: https://www.thonk.co.uk/shop/curtis-cem3340-ic-vco-chip/
Metal Case: DIY Hub http://siddarthianinnovations.bigcartel.com/product/deckards-dream-pre-order-front-panel-and-rack-case
Wooden Case: Ross Lammond (UK) http://www.lamonddesign.co.uk/index/
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a very helpful Tool for the SMD Soldering: (and sponsoring for this website hosting)
(link here )