Page History:
Date | Autor | what | |
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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 |
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 is planned and the release is planned for July 2018, this page is only for rev.1.x the REV.2.0 guide is here DDRM 2.0 Build Doc Homerev.2 guide |
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Product Info: the Deckard's Dream product is available as Build to order and DIY KIT Version, both released in 2017. Its also known or coined as the "DDRM". The difference in the DIY KIT and assembled (Build to order) are:
Note: Although the DIY has most of the SMT devices pre-installed onto the PCBs, there are over 675 SMT decoupling capacitors (0805) and one small (SOIC8) power switch device that MUST be installed by the builder, in addition to the through hole components A addional 1U expander is planned - more later in a addional page Examples of Presets and voices: https://soundcloud.com/deckardsdream |
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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Current identified Errors/Omissions/Errata:
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 |
Bugtracker
further bugs, issues, problems are reported here (here are user reported issues due to soldering failures or other issues reported too)
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Deckard's Dream Home and Store: http://www.deckardsdream.com
Current BOM 1.10 from 08.Jan.2017
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(please note the version and changes at the bottom of the sheets. Also see Errors/Omission and Errata above)
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.
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some users plugged the powersupply in a voicecard slot and earn a damaged ARM processor. to minimize this risk, few solutions: put a tape on the voicecard slots 2-8 or use a cable tie to shorten/bind the powercable between powersupply and breakoutboard as short as possible (you can´t attach the powersupply furthermore in a voicecard slot |
Firmware:
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.
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MIDI Chart (MIDI Control Change Message Mapping for the DDRM) http://www.deckardsdream.com/downloads/DD-MIDI-CHART-REV1.0.pdf
Knowledge and other links
Build: Deckards Dream General Build Thread
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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.
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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
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a very helpful Tool for the SMD Soldering: (and sponsoring for this website hosting)
(link here )