#16

This is a great resource, thanks for putting this together. I started building some of the LZX cadet modules but am thinking this might’ve been a better (and cheaper) place to start!

Looks like the Recurboy project utilizes 4 cv inputs… I wonder if this could be adapted for use with some of these other tools. Looks like the cvs go to an analog to digital converter and out from there to the pi.

3 Likes
#17

For 1.5 is the midi napping different? I have a nanokontrol 1 and with this new version I can’t figure out how it’s mapped. Thanks for such a fun tool!

1 Like
#18

You are welcome! I’m so happy to be able to give back to these communities

it is going to be really cool when someone else releases a CV host for this kind of module (not really my thing I like the software side of things but hardware is outside of my ability currently)

Although I might just pick up a VCMC so I don’t have to wait :wink: haha
I’ve been eyeing one of those to control a V4 too that should be fun

||||||||||||||||||||||

I ended up changing the mappings for scrawl in 1.5 I hadn’t really considered the layout at all when I first mapped everything it was mostly so I could make sure everything worked.

I should have added a line in the what got updated about that, sorry for the confusion

the readme reflects the new layout

I’ve got a drawing of the layout I’ll add to the github and put up here too just have to find it first :slight_smile:

I keep putting off finishing up the demo videos I’ll ask my husband if he’ll do it

for now though here is the current mapping

Scrawl v1.5 MIDI map

// top row of knobs on nano kontrol (left to right) CCs

  • 16 [brush] changes the current brush (currently 6 available)
  • 17 [size] changes a size parameter of current brush
  • 18 [trix] usually used for triangle brushes
  • 19 [midimouseX] control is bipolar for X direction
  • 20 [brushred]/[bgcolor1] colors current brush with Red | if [backColor] (68) is on colors [bcolor1]
  • 21 [brushgreen]/[bgcolor2] colors current brush with green | if [backColor] (68)is on colors [bcolor2]
  • 22 [brushblue]/[bgcolor3] colors current brush with blue | if [backColor] (68) is on colors [bcolor3]
  • 23 [brushalpha]/[bgcolor4] sets alpha for current brush | if [backColor] (68) is on sets alpha for [bcolor4]
  • 62 [randomcolortime] if you have a [random colorize mode] / [randomtime] / [randomsize] on this will set the time between changes

// sliders on nano kontrol (left to right) CCs

  • 120 [Scaleamount] sets the scale amount if [mirrorscale] is ON
  • 121 [size2] is used for some brushes for a second size (rectangle,triangles,star burst)
  • 122 [triy] used for triangle brushes
  • 123 [midimouseY] control is bipolar for Y direction
  • 124 [bcolor1] colors main background Red if paint mode is on it won’t show up until screen is cleared
  • 125 [bcolor2] colors main background Green if paint mode is on it won’t show up until screen is cleared
  • 126 [bcolor3] colors main background Blue if paint mode is on it won’t show up until screen is cleared
  • 127 [cirres] sets max resolution for circle shape | set rotation for triangle brush 3 | minimum radius for star burst 5
  • 119 [randomamount] sets the maximum amount of randomness when [randomtime] &or [randomsize] is on

// toggle buttons (top and bottom row left to right top first bottom second)

  • 64 turn mouse cursor ON/OFF
  • 32 [fill] turns fill ON/OFF for brush
  • 65 [erase] if OFF paint mode if ON pointer/spotlight mode
  • 33 [drawing] simulates mouse press but it is a toggle rather than press
  • 66 [mirrorScale] turns scaling mode ON/OFF scale amount (66) when scale is ON
  • 34 [mirror] turns mirror mode ON/OFF to see effect make sure to set [mirrorshape] (43,44)
  • 67 [backGrad] turn background gradient ON/OFF if OFF solid color set via [bcolor(1-3)] (124,125,126)
  • 35 [brushcolor] turns colorization ON/OFF for brush if OFF defaults back to WHITE
  • 68 [backColor] changes context of (20,21,22,23) RGBA knobs if ON coloring background gradient | if OFF coloring brush if you don’t have the background gradient on you won’t see any change even if this is ON. Allows for brush and background gradient to be different colors
  • 36 [randomize color for brush] if alpha above 120(midi) then alpha stays the same as set othewise it is also randomized
  • 69 [bcolorrandomize] randomizes background color won’t see effect unless you are not paiting to the screen [erase] 65 off | both background and gradient if backGrad is on
  • 37 invert brush color (works with [brush(red,green,blue)]
  • 70 [Ybt] y axis scrolling bottom to top ON/OFF auto scrolling works with all brushes except random lines
  • 38 [Ytb] y axis scrolling top to bottom ON/OFF auto scrolling works with mirroring (some strangeness but the fix I tried made it worse…)
  • 39 [Xlr] x axis scrolling left to right ON/OFF auto scrolling allows for slit scanning!
  • 55 [Xrl] x axis scrolling right to left ON/OFF
  • 61 [randomdraw] this changes the speed and direction on the autoscrolling based on [randomtime] (62)
  • 60 [randomsize] this changes the sizof the brush for autoscrolling based on [randomtime] (62)

//6 toggle buttons on left side of unit (<<, >, >>, loop, stop, record these are the labels on the controls not what they do)

  • 43 << [mirrorshape] + (2,3,4,5,6,7,8,9,16,32,64) number of shapes drawn to screen increment though list with wrap around
  • 44 > [mirrorshape] - (2,3,4,5,6,7,8,9,16,32,64) number of shapers drawn to screen decrement thorugh list with wrap around
  • 42 >> [videopainting] turns on USB/webcam input masked by current shape
  • 41 loop [colorofbrush] toggles between full RGBA control [colorbrush] ON and RGB with random alpha “softpaint” OFF
  • 45 stop [colorofbrush] colorrandom ON randomizes RGB with full alpha control / fullrandom OFF randomizes RGBA
  • 46 record [brushpreview] allows you to see the brush cursor (currently can’t be mirrored) while in paint mode and not draw in the frame buffer. there is some funkiness in the preview brush currently I’ll get in there and fix it at some point but I figure this isn’t a super vital feature currently
5 Likes
#19

Mentioning the Befaco VCMC was great. I have been trying to decide if I wanted to jump on this RaspPi thing but I wanted to determine if I could mount a RaspPi on a panel and use CV to control it. Any info in that direction would be helpful to me. That way I could put it in the rack with my other toys and patch it in.

1 Like
#20

The Logitech C310 camera you recommend seems very hard to come by (sold out everywhere — hefty price gouging for used models).

Any other camera you could recommend that would work for this set up?

Thanks!

#21

If you look on the recur tv group someone is testing cv with it now! I am probably going to design a RPI cradle with a computer module whenever my uni work clears up in a few weeks.

1 Like
#22

is that on twitch or facebook?

1 Like
#23

Sorry autocorrect changed fb to tv. my bad!

1 Like
#24

IMG_5205
IMG_52053264×2448 1.84 MB

here is my master guide for controls of scrawl

top left is transport section 41-46
next on the top both rows of toggles 32-39,55,60-61,64-70

below the picture knobs are on the top row 16-23,62
and the sliders are below 119-127

3 Likes
#25

This is awesome as is your synth! Excited to plop down and explore tonight.

2 Likes
#26

I bet there would be a way to do it with the terminal tedium. Yeah, you’d probably have to have an hdmi cable poking out of your case or get north coast Modular’s panel. It would at least be the hardware, 6 cv inputs and audio i/o, but getting them to speak with whatever application would be the uncharted territory.

#27

Sorry to be dense, but what is terminal tedium?

#28

Man, sorry that I haven’t been looking in lines. The terminal tedium is eurorack module that provides 6 cv inputs, stereo audio I/O, as well as digital I/O. Has a PSU but it’s really only capable of handling a pi zero unless you up the regulator current And then you might not have much of +12V rail afterwards. But yeah, a euro module with a pi header on the back for integrating the pi with euro.

2 Likes
#29

Hello! Thanks for this thread.

Does anyone have a recommendation for a good, basic video looper for Raspberry Pi? I have a Pi 3b. I’m looking to loop mp4 files.

1 Like
#30

r_e_c_u_r is pretty good
https://github.com/langolierz/r_e_c_u_r/blob/master/README.md

2 Likes
#31

as far as looping goes you’ll want to look at recur listed in the OP

1 Like
#32

Just beginning to explore rpi video stuff - really loving the amount of work you’ve put in here, it’s amazing! I have a small (probably silly) question… I burned the 1.5 image and it boots up into Scrawl, everything is working great. However how do I get back to the desktop to run another program?

#33

plug in a USB keyboard and press escape!
thank you very much

I know at least one more thing has been released since I put this up and after vidicon I will put some more work into scrawl.

1 Like
#34

So from the looks of things to run any of this stuff I’ll have to make an actual Linux distribution imaged micro SD, right?

There’s no way to just download each app individually?

1 Like
#35

what you are downloading from any of these will be an .iso to flash onto an microSD card and it has the linux distribution handled.

if you download the Scrawl distribution I’ve got Scrawl, waaave pool ,spread (my colorizer), spectral mesh on the desktop as bash scripts to make running everything easier.

otherwise you have to open terminal get to the correct folder and make then run your script. It is much simpler to do this with the bash scripts like I have.

it is easy to add them once you have a linux distribution setup.

just go to github and download the folder and put it in the correct place.