Visual Cortex pre-encoder expander

Forum DIY
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21

I’d like a pcb/panel set please!!!

@wednesdayayay - watch a couple of basic videos on how to solder and then check out diy synth guy on youtube!

get a really basic soldering iron and a cheap kit to practice with (mults or something) - it’s really quite easy - I learnt last september and have built 20 modules - including 5 cadet and 6 castle modules and 3 smd (2 ripples and a buffered mult) virtually everything worked first or second time - one of the ripples is not quite right - but otherwise all ok

1 Like
22

I’m interested in the kit if possible, but a pcb+panel would be appreciated as well. Thanks!

23

count me in for a Kit if possible as well!

24

I would take a pre-built or kit.

25

I’d be down for a prebuilt module!

26

I’d take a PCB + panel too, love the mock up :]

28

I could do a built module won’t be difficult, but keep in mind that you will need to mod your Visual Cortex, which is solder a 2x3 pin header.

Its not difficult but you will need to do it your self (or find someone close to you) :slight_smile:

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29

IMG_20181019_171156
IMG_20181019_171156.jpg2121×2828 2.42 MB

IMG_20181019_171140
IMG_20181019_171140.jpg3000×4000 3.74 MB

IMG_20181019_171438
IMG_20181019_171438.jpg2828×2121 2.16 MB

IMG_20181019_171444
IMG_20181019_171444.jpg2828×2121 2.29 MB

IMG_20181019_171450
IMG_20181019_171450.jpg2828×2121 2.15 MB

IMG_20181019_171714
IMG_20181019_171714.jpg4000×3000 2.38 MB

2 Likes
30

Yeah I’d be down for a prebuilt, Sure I could figure out fitting the header.

31

Hey, could a little header kit be sold w the modules? That would make things so easy!

32

the full kit im planning will have pcb panel, pots, knobs, jacks, components (ics, resistors caps etc) a 3x2 header for cortex and a ribbon cable for the rgb expander header.

7 Likes
33

@creatorlars Im gonna do a second flavor of the expansion with YUV outs. Was wondering if I can use the Lumma circuit that you kindly show me as the Y

RGB-to-Luma
RGB-to-Luma.JPG1079×327 126 KB

or I must do another new lumma signal (I was going to go with voltage dividers of R G and B)
Y = 0.299R + 0.587G + 0.114B

My real question is if the Lumma of the YUV is different to the Luma schematic. Luma YUV vs Luma RGB (I would say no, but I’m in doubt.).

This lumma circuit is magix!

2 Likes
34

Great work on this @luix! I’m down for two kits. Curious as you’re planning a second breakout … could they easily be combined into one expander?

35

yeah should be easy to chain them.

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36

@luix That circuit should work fine! For the U and V outputs you can follow a similar method. I generally use SPICE simulations to tweak circuits like this until output voltage readings are correct according to RGB input voltages. 5Spice has a free version we’ve used for years, although I’m using Tina more frequently now.

2 Likes
37

I’d be down for a kit to support the project. My cortex already has expansion headers soldered :slight_smile:

2 Likes
38

I’ll probably want a PCB+panel at least. Wasn’t planning on getting a visual cortex, but I’ve run into a dead end trying to troubleshoot my cadet sync generator build–so I should probably just buy a vc.

39

Sign me up for one too!

I’ve been running the VC component output back into its Input Decoder, and then out from those 1v RGB outputs into the MemPal. Not so ideal, of course, as I lose that component input. :-/

40

I’d like to get a kit or prebuilt as well. This is a great project, thanks!

41

Def. in for a panel/pcb when you are ready to take orders :slight_smile:

3 Likes