Page History:
Date | Autor | what | |
---|---|---|---|
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 |
Table of Contents
Deckard's Dream Synthesizer
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 rev.2 guide
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:
- the component format, the DIY KIT is mostly THT, the build to order synth is mostly in SMT.
- The case size is not as deep for the build to order as it is for the DIY.
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)
Current identified Errors/Omissions/Errata:
Date | Location | Identified issue | Resolution |
---|---|---|---|
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)
https://github.com/ffont/ddrm-issues/issues
Deckard's Dream Home and Store: http://www.deckardsdream.com
Current BOM 1.10 from 08.Jan.2017
Shared Mouser Basket: https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=9ba27b85b3 (not approved - check for SMT caps)
Ultravox reply: "The cart doesn't include items that the BOM says are sourced from eBay, Small Bear, synthcube, etc."
About partsourcing: check the price for the next price break ( 3 resistors are more expensive than 10)
for EU users: order from www.TME.eu standard parts, its cheaper as mouser
Display:
make sure your OLED is VCC-GND-SCL-SDA, very often shows the shop the correct pinout but deliver another type.
REV1.1.0 CORRECTED THE AMOUNT OF DIP16 SOCKETS
REV1.0.9 TL074 CHANGED TO TL064, TL072 CHANGED TO TL062. HEAT SINK, THERMAL PAD, COOLING FAN AND MOUNTING HARDWARE ARE OPTIONAL IF TL06X OPAMPS ARE USED. VOLUME KNOB AND SLIDER CAPS PART# CHANGED.
REV1.0.8 CHANGED C12 TO 1uF, C13 TO 330uF ON THE PSU BOARD
REV1.0.7 CHANGED R2 ON THE OUTPUT BOARD TO 22R, CHANGED C6 ON THE MOTHERBOARD TO 10uF
REV1.0.6 CHANGED 1N5817 TO BAT85S ON THE MOTHERBOARD
REV1.0.5 ADDED USB A TO USB B ADAPTER
REV1.0.4 CORRECTED 30K MOUSER PART # IN A VOICE CARD
REV1.0.3 CHANGED HEAT SINK QUANTITY, C2 ON OUTPUT BOARD IS 100uF NOW REV1.0.2: ADDED ST LINK PROGRAMMER
(please note the version and changes at the bottom of the sheets. Also see Errors/Omission and Errata above)
Alfa 3340
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
Here are the values to update :
- FM input (initial current - solve the corrupted calibration) : R6/R112 to 390k
- 12V adaptation (supply current to internal 3340 Zener) : R39/R145 to 560r
- PWM Comparator output (minimize pwm control on frequency) : R22/R128 to 51k
please note, this parts are not present in the BOM and guides !
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.
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.
Description: DECKARD'S DREAM BOOTLOADER REV1.0
http://www.deckardsdream.com/downloads/DD-BOOTLOADER-REV2.0.hex
official Firmware
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))
http://www.deckardsdream.com/downloads/DD-FIRMWARE-REV1.2.1.bin
http://www.deckardsdream.com/downloads/DD-FIRMWARE-REV1.2.4.bin (newest)
Menu Structure:
DD-MENU-STRUCTURE-REV1.0 (1).pdf
Tested/stable Firmware: (don´t install the latest firmware on important productive environments, please wait few weeks after an release/update of the firmware/bootloader, that minimize outages/malfunctions/data loss )
stable version:
- package created by DSL-man: 1.2.1 firmware with 2 soundbanks from 1.2.3 release : DD1.2.1_with_2banks.zip
- package created by DSL-man : 1.2.4 firmware with 2 soundbanks from 1.2.3 release 1.2.4_with_Michael_R_patches.zip
- package from deackardsdream: 1.25 firmware firmware, soundbank, bootloader DD-FIRMWARE-REV1.2.5.zip
If you have a working DDRM and only want to update the firmware or soundbanks, just connect a USB cable to your Windows PC and drop the unziped file on the "storage device disk", the zip file contains a firmware file and 2 soundbanks (Bank2 are CS80 patches)
MIDI Chart (MIDI Control Change Message Mapping for the DDRM) http://www.deckardsdream.com/downloads/DD-MIDI-CHART-REV1.0.pdf
Patch Editor
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
User Manual (PDF):
https://drive.google.com/open?id=1xMHwV3TBTWAK5WPEw8NV0F6aiztP5ZnF
Knowledge and other links
Build: Deckards Dream General Build Thread
Discussion: DIY CS-80 imminent...(Deckard's Dream)
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/
a very helpful Tool for the SMD Soldering: (and sponsoring for this website hosting)
(link here )