Optical Crank Configuration Variables

Variables
const float	EXPRESSION_VMAX = 120.0
	The crank speed in RPMs at which expression volume will max out. More...
const int	EXPRESSION_START = 90
	The minimum expression volume. More...
const int	NUM_SPOKES = 80
	The number of "spokes" on the optical crank wheel. More...
const float	V_THRESHOLD = 5.5
	The crank speed at which sound begins to play in RPMs. More...
const int	SAMPLE_RATE = 1000
	The delay between crank samples in microseconds. More...
const int	MAX_WAIT_TIME = 40000
	The maximum amount of time in microseconds to wait for crank movement. More...
const float	DECAY_FACTOR = 0.00
	The multiplier applied to the velocity when no movement is detected. More...
const int	BUZZ_MIN = 200
	The minimum duration of buzz sounds. More...

Detailed Description

These are configuration variables that only apply to optical-crank models. USE_GEAR_CRANK must be disabled for these to have effect.

Variable Documentation

BUZZ_MIN

const int BUZZ_MIN = 200

The minimum duration of buzz sounds.

• Increase this if buzzing feels too "jittery" or rapid.
• Decrease if buzzing feels sluggish or unresponsive.

DECAY_FACTOR

const float DECAY_FACTOR = 0.00

The multiplier applied to the velocity when no movement is detected.

• Smaller values cause sound to cut out more quickly once crank motion stop.

EXPRESSION_START

const int EXPRESSION_START = 90

The minimum expression volume.

• Expression (MIDI CC11) value will be at least this much.
• Silent = 0, Max = 127
  

EXPRESSION_VMAX

const float EXPRESSION_VMAX = 120.0

The crank speed in RPMs at which expression volume will max out.

MAX_WAIT_TIME

const int MAX_WAIT_TIME = 40000

The maximum amount of time in microseconds to wait for crank movement.

• The actual wait time changes dynamically, but will not exceed this value.

NUM_SPOKES

const int NUM_SPOKES = 80

The number of "spokes" on the optical crank wheel.

• This is the number of black/blocking bars on the wheel, not the number of transitions.

SAMPLE_RATE

const int SAMPLE_RATE = 1000

The delay between crank samples in microseconds.

• Code will cycle though at least this long between samples.
• This is not how long the code waits for movement, just how often it checks.

V_THRESHOLD

const float V_THRESHOLD = 5.5

The crank speed at which sound begins to play in RPMs.