This is an old revision of the document!
Table of Contents
CV-1
CV-Recorder/Looper & CV-Generator
Control Voltage Recorder, Looper, and Generator - for a own Eurorack-Line… more in Future!
–this picture is the first prototype - pre-Eurorack
Features
* A Envelope which can be Recored from an AIN-Source, it can be Editet on Startpoint,ATK-Playbackrate, Decay-Playbackrate
* LFO which Waveform is stepless morphable from Sine Square Tri Saw-Up to Saw-Down…(only Clocksynced!)
* MSQ MotionSequencer to loop a CV-Signal.
* A Mixer Page which Mixes/Mutes ENV+LFO+MSQ - and scales the output CV
* Copy, Paste, Clear: to Transfair the CV Sequence to other CV1 Instances
* ProgramChange Load and Store on microSD-Card, Load and Store are CC-Commands, so you can remote the device
* The Sequencer can be set to Tact Systems: 3/4 4/4 5/4 7/4 9/4 11/4 13/4
Hardware Requirements
Midibox:
- dipcoref4 - this is the µC Brain for CV1
- no other PCBs needet - but expandable with other Eurorackmodules in Future
- µSD-Card, formated with FAT32
- Soldering Iron - with a Dip that can Handle SMD-Parts, Wires, solder Paste for the µC….
- Eurorack Power Source +-12V AND +5V!
Set
Cabeling
Midi IN1 »> CV1 Remote Device or a Midi-Sequencer
Midi OUT »> to a Global CV1 Remote Device - which will need a lot of Midiinputs M16?
- @JMidi1: connect your Sequencer to get Midiclock and Programchanges
- @JAIN1: 2 CV Inputs - 12V tollerant
- @JAUT3: 1 CV Output - (internal DAC with Protection Cirtuit > 12V Tollerant)
- @J19:Get up to 8 CV-Outputs, with a AoutNG
- @JLCD1: up to 4 Additional OLED-Displays for every one a Reset Line - so no additonal Circuit needet
- @J89: DIN and DOUT Shiftregister Chain: thought for decidet Expander Modules (which will come in near future
- @J2/Bootload: If the core is not starting up - because of bad-Firmware, then bridge this Jumper to come into the Bootload-Mode
Software
Firmware
yes it loopin… but not good enough to release anything…
Building
Frontpanel
- Eurorack Alu-Plate
Case
BOM
- this is not the right boom - it is a placeholder for the MOMENT!
Ref | Qty | Value | Footprint | MouserPart | |
---|---|---|---|---|---|
C1 – C7 | 7 | 100nF | 0603 Capacitor | 81-GRM33C71C104ME14D | Mouser |
Rec–1 – Rec—4, UI–5 UI—4, led1, -1 -2 -3 -4 | 11 | REC, LED, beat, CC-IN, | 0603 LED | 630-ASMT-RR45-AQ902 | Mouser |
1-16 (LED-BAR) | 64 | bar | 0603 LED | 755-SMLEN3WBC8W1 | Mouser |
D64 D65 | 2 | 1N-4148 | 1206 Diode | 833-1N4148W-TP | Mouser |
PTC1 | 1 | Thermistor_PTC | 1206 Resistor | 576-1206L150THWR | Mouser |
R1, R2, R19 – R34 | 18 | 10K | 1206 Resistor | 603-AC0603FR-0710KL | Mouser |
R3 R5 R6 R7 R8 | 5 | 47 | 1206 Resistor | 603-RC0603FR-0747RL | Mouser |
R9-R14, R36, R37 | 8 | 220 | 1206 Resistor | 603-RC0603FR-07220RL | Mouser |
R15 R16 | 2 | 1K | 1206 Resistor | 603-RC0603JR-071KL | Mouser |
R17 R18 | 2 | 4K7 | 1206 Resistor | 603-RC0603FR-074K7L | Mouser |
OUT1 | 1 | Midi | DIN-8-SDF-80J | 490-SDF-80J | Mouser |
M1 | 1 | DIPCORE32_CMPNT_48P | 517-929870-01-20-RA | DIP-40 | Mouser |
S8 | 1 | Shift | DT6 | 611-D6R00F1LFS | Mouser |
S1 – S4 | 1 | Part1 | 611-SERWHAUOA | DTL2-1-LED | Mouser |
S5 – S7, S9 – S10 | 6 | X,C,V,Len,Pre,Tac | 611-SERRDAUOA | DTL2-1-NO-LED | Mouser |
ENC1 | 1 | ENC_BOURNS_PEC11 | ENC_BOURNS_PEC11+SW | 652-PEC11R-4215F-S24 | Mouser |
IN1 IN2 | 2 | Midi | Midi-Socket-MAB5SH-DIN-5 | 566-MAB5SH | Mouser |
Foot1 | 1 | Pin | |||
J2 | 1 | BootLoad | |||
AIN1 | 1 | PIN | |||
U1 U2 | 2 | 6N136 | SMDIP-8_W11.48mm | 782-6N136-X009 | Mouser |
-595 | 3 | 74HC595 | SO-16-N | 621-74AHC595S16-13 | Mouser |
U3 U4 | 2 | 74LS165 | SO-16-N | 595-SN74LS165ADR | Mouser |
M2 | 1 | µSD_DM3ATDM3AT | ΜSD_DM3AT | 798-DM3AT-SF-PEJM5 | Mouser |
To Do
a housing/case or frontplate
Resources
Community users working on it
- Phatline = Programming, Documentation…
Just let a Private message on the forum to user already involved.
I have 10 ProtoBoards here - i test one, and if it works, i can share them for Beta Testing-if you pay the postage