Rotation patch with Cadet, Foxing Hour, Syntonie and Visible Signals
Category: Unknown · Tags: — · Posts: 3
#1 — jerry · 2024-08-22
Me and @rempesm decided to try to do the rotation patch using all cadet and other DIY modules, I thought I would share the patch. The gainbrains have the 2 resistor mod mentioned here
In video the Gamma’s output is sent through a Castle ADC and sent to each color channel
#2 — joem · 2024-08-25
Nice work! Any chance you can explain what’s happening? I can piece together what some of it is doing though I get lost on the Processors and Gain Brains. I assume they’re doing some multiplication, but I don’t quite follow.
#3 — jerry · 2024-08-28
This is following the formula:
X = (H_ramp * sin) + (V_ramp * cos)
Y = (V_ramp * sin) + (H_ramp * -cos)
sin = 0
cos = 90
-cos = 270
- The H and V ramps are ran through processors to scale them to +1/-1 range
- We do all of this multiplication within the gain brain following the forumla above
- Sum the two parts to get our X and Y value using the Dual A+B-C
- Offset the voltage back to 0-1 range in Access.
- Lastly we rectify the signals to turn the ramp into a triangle, otherwise we won’t get the square shape in the end
- I ran them into an expo/log after to get a more interesting shape than a square, then that through a ADC gave me the three color channels
If you are interested in a more in depth analysis @rempesm wrote one in the LZX discord patch talk channel.
Hope that helps make sense of it