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# Tutorial
If this is your first time trying out **Orca**, watch this [introduction video](https://www.youtube.com/watch?v=RaI_TuISSJE).
## General
- On OSX, setup [IAC virtual MIDI buses](https://help.ableton.com/hc/en-us/articles/209774225-Using-virtual-MIDI-buses).
- On Windows, setup [loopMidi](http://www.tobias-erichsen.de/software/loopmidi.html).
- On Linux, setup [qjacktl](https://qjackctl.sourceforge.io/).
## Ableton Live
To send [Midi notes](https://github.com/hundredrabbits/Orca#midi) to [Ableton Live](https://www.ableton.com/en/) instruments, bang the Midi operator `:`, like `:03C` to send to _Channel 1, Octave 3, Note C_. Have a look at [midi.orca](https://github.com/hundredrabbits/Orca/blob/master/examples/_midi.orca) to see it in action.
- Launch Ableton Live.
- Create a new **midi instrument** track.
- Select `IAC Driver(Bus 1)`(OSX), or `LoopMidi`(Windows), in the instrument's inputs dropdown.
- Activate the **In** toggle, on the instrument track.
## Bitwig
The following is taken from this page: https://answers.bitwig.com/questions/1218/how-do-i-get-midi-inout-of-bws-on-linux
- Quit Bitwig if running.
- Start `qjacktl`.
- Go to _Setup > Settings > Parameters_ and set MIDI Driver to "none" (this turns off jack-midi)
- Go to Setup > Misc and check "Enable ALSA Sequencer Support" (if not enabled)
- Stop Jack if running and quit gjackctl
- Run sudo modprobe snd_virmidi midi_devs=1 (to enable virtual midi with one device which is easier to understand for now)
- Start qjacktl
- Start jack
- Open Connections: Connect device on left "0: QuNexus MIDI 1" to "0:VirMIDI 5-0"
- Open Bitwig
- Under Options > Preferences > Controllers click "Add controller manually"
- Choose "Generic MIDI Keyboard"
- Once it appears as an input choose "Virtual Raw MIDI/1"
## SonicPi
To send [OSC messages](https://github.com/hundredrabbits/Orca#osc) to [SonicPi](http://sonic-pi.net), select [port 4559](https://github.com/hundredrabbits/Orca#osc). SonicPi listens to the address defined in `sync`, to send to the `live_loop`, bang the OSC node `=`, like `=a`. Have a look at [sonicpi.orca](https://github.com/hundredrabbits/Orca/blob/master/examples/projects/sonicpi.orca) to see it in action.
```
live_loop :drum do
use_real_time
sync "/osc/a"
sample :bd_haus, rate: 1
end
```
## Dotgrid
To send [UDP messages](https://github.com/hundredrabbits/Orca#udp) to [Dotgrid](http://github.com/hundredrabbits/Dotgrid), select [port 49160](https://github.com/hundredrabbits/Orca#udp). To draw lines on Dotgrid, you need to bang the UDP node `;` with different [commands](https://github.com/hundredrabbits/Dotgrid/blob/master/desktop/sources/scripts/listener.js). Have a look at [dotgrid.orca](https://github.com/hundredrabbits/Orca/blob/master/examples/projects/dotgrid.orca) to see it in action.
- `;0`, clear layer **#1**.
- `;0l1234`, add a line from `1,2` to `3,4`.
- `;`, redraw.
Here's a list of supported operations.
```
;0 // Clear Layer 1
;0l1234 // Add Line from 1,2 to 3,4
;0c1234 // Add Clockwise Arc from 1,2 to 3,4
;0r1234 // Add Reverse Arc from 1,2 to 3,4
; // Redraw
```
## Pilot
[Pilot](https://github.com/hundredrabbits/Pilot) is a minimalist synth software designed to work via UDP, and to quickly get started with Orca. Remember that **Pilot uses UDP instead of MIDI**. Have a look at [pilot.orca](https://github.com/hundredrabbits/Orca/blob/master/examples/projects/pilot.orca) to see how it should be used.
## Patterns
Here's a collection of recurring patterns in the design of Orca machines.
### J Funnel
Move two horizontal values next to each other.
```
.1Y12.
...JJ.
..A12.
..3...
```
### X Stack
Move two vertical values next to each other.
```
.21X1..
.10X2..
...A21.
...3...
```
### Y Projector
A very simple projector using a yumper.
```
..D4..
.H*...
.Ey.E.
......
```
### U Loop
A rotating effector.
```
...U..
.U....
....U.
..U...
```
### Capacitor
Banging the lowercase `i` charges it, discharges a bang each n-1 times, n is 9 in the example.
```
3O.....
..Y.i09
..F01..
.......
```
### One Shot Counter
Banging the lowercase `x` triggers it, count ranges from the right `x` input to the last right `F` input.
```
24x0...
14O....
.F88...
.*Y*h..
....I0z
```
## Families
| Families | Glyphs
| ---------- | -----------
| Directions | N S E W Z
| [Math](https://www.youtube.com/watch?v=CR1TMGYhCoE) | A F I M R
| Writers | G P X
| Readers | Q T O
| [Jumpers](https://www.youtube.com/watch?v=CR1TMGYhCoE) | J Y
| Timers | C D
| Variables | K V
| Misc | B H L U
| Special | * # ; : =
|
