Schrabikus
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CEM3379 Stereo VCF assembled board
Schrabikus commented on Schrabikus's gallery image in Schematics and PCBs
Hi, Peter! Saw your 2 hour MIDIbox SEQ building tutorial at Youtube, great work!! -
CEM3379 Stereo VCF assembled board
Schrabikus commented on Schrabikus's gallery image in Schematics and PCBs
@Antichambre This an old project, but I'm still not finished the control surface. Enclosure has taken from old soviet "MICRO" calculator Elektronika MK-44 but it has no main PCB, so I'm still searching for another one to take keyboard from it for more authentic look Rio asked me for the project files, so I've uploaded everything to public. Yes, design is based on Olivier's original Shruthi-1 CEM filter board, other parts is quite standard except OLED - CORE8 PCB with MidiboxSID v2.042, Stereo SID6581 PCB and AOUT_NG. PSU is taken from old DVD player - +5/+12/-12 volts, CEM VCF powered with +12/-12V. The only one noisy part is OLED's boost converter, I was thinking of powering it directly from +12V rail, should fix the problem. -
CEM3379-VCF-eagle.zip
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PM send!
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TK, Thanks a lot for Step Rec! It's really a great feature!
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How did you connect it? 1:1 or CORE SO - AOUT_NG pin4 CORE SC - AOUT_NG pin5 CORE RC1 - AOUT_NG pin3?
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Jo, I have luck with 8 bit mode and decided to leave it working as is. Another one is still not ordered. I'm in hibernation mode :D
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Building process of my mbseq and mbfm
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Here is compared to LCD
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Great project, man!! Try these - 9mm top diameter. Love their quality and tactile feel. I'm using them as encoder knobs painting caps with permanent marker (can't find black caps without mark) But for my new SEQV4 I'll make black acryllic milled ones.
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inexpensive source of 40x2 lcd displays for seq4
Schrabikus replied to jbdiver's topic in Parts Questions
This is yellow-green on black ones. If you want better view angles - buy black on yellow (or other non-inverted). Quality as Altitude said. Poor view angles and inconsistency of backlight for inverted LCD's, but price and color options are better than at ebay. Also 20x2 character OLED working with MBSID V2 in 8-bit mode.
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Yep. I found that this doubles output CV. Here's some settings/voltage readings.
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1.Yes. 2.Yes I got 0-4.97V voltage swing with all as you described, but MP depth set to 1 instead of 127. :wacko:
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Yes! Just fugured it out. Toggling "Play" don't send note off. But there's still some volume offset. With MP depth set to 32 I can get 0V Volume voltage. But it rises only to 2.5V with envelope triggered. And 1.86-4.37V range with MP depth 127.
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Seems like sustain value stays routed to volume after note off.
