Circles

Circles consists of lib/libCircles.lua, the sequencing engine and the circles.lua script that uses the engine.

circles.lua

The circles script allows you to move a cursor around on screen using ENC 2 and ENC 3. Pressing KEY 3 will place a new circle at the cursor point. KEY 2 will remove the circle at the cursor point. Holding KEY 1 will remove all circles after a confirmation step. ENC 1 adjusts the cutoff frequency of the filter.

Placed circles will grow with each MIDI tick. This means that it will stay in beat with whatever else you have going on.

Circles will burst when they hit another circle or when the get too big. When they burst, they make sound. The sound they make depends on their x, y position on the screen and how big they are when they burst.

The pitch is determined by their x coordinate, with lower pitches on the left and higher pitches on the right.

The timbre is determined by their y coordinate, currently connected to PWM of the PolyPerc engine.

The size determins how long the sound will last. Larger circles will sound out for longer.

There are also a few parameters to adjust under the KEY 1 parameters page. Play around with those.

v1.5

Added MIDI support. Choose midi device (1 - 4) and channel (1 - 16) in params. Added scale selection. Choose root note and mode in params.

v1.4

Added Crow + Just Friends support. Please make sure to update your crow and Norns to the latest firmware.

v1.3

Circles now supports the system saving/loading of params. See the PARAMETERS section of https://monome.org/docs/norns/ for more information.

v1.2

Added deterministic burst type option. This should allow for more loop like rhythms.

v1.1

Added crow support.

Added params for output; audio or crow. If crow:

• Output 1: Trigger
• Output 2: Pitch
• Output 3: Y Pos (0 - 10V)
• Output 4: Radius (0 - 10V)

Added params for clock; midi or crow. Crow accepts clock on input 2. I would like this to be on input 1, but there is currently a bug with norns or crow mentioned here (https://llllllll.co/t/crow-help-norns/25863/10).

lib/libCircles.lua

This is the library that does all of the heavy lifting. It keeps track of all of the circles, grows them and does the hit detection to decide when to burst them. It can comunicate with a client script by way of callback functions. If you're interested in any of this, please read the documentation in the file.