Motion Control In Two Dimensions

Most analog video synthesis patches begin with horizontal and vertical ramp waveforms. These generators provide the synthesist with a method of identifying 2D coordinates on the screen. With motion controlled ramps, these 2D coordinates can be repositioned and animated at their source – causing the entire resulting video art pattern to animate.

Dedicated Low Frequency Outputs

In addition to motion control over the internal video waveforms, Scrolls presents four dedicated low frequency waveform generators. These signals are synchronous with the movement of the internal ramps, and provide ways to animate other parts of your patch in tempo with the video pattern.

Autonomous Animation Paths

Random and Journey modes provide methods for generating the illusion of autonomous entities within the space of your video composition. Watch your video pattern slowly explore around the screen at random directions, or teleport in strobing patterns of random phases. In all of these modes, the synthesist has control over a basic clock speed, which allows even chaos to step to the beat.

HH. Double Horizontal Mode

Both waveform generators are horizontal ramps with separate phase controls.

VV. Double Vertical Mode

Both waveform generators are vertical ramps with separate phase controls.

HV. Horizontal & Vertical Mode

The first ramp generator is horizontal and the second ramp generator is vertical.

PP. Ping Pong Mode

The first ramp generator is horizontal and the second ramp generator is vertical. The motion control algorithm uses triangle waveforms, for the bouncing DVD player logo effect.

O. Orbital Mode

The first ramp generator is horizontal and the second ramp generator is vertical. The motion control algorithm uses a quadrature sine wave generator to animate the ramps in an elliptical orbit. Phase1 controls motion speed and Phase2 controls motion depth.

J. Journey Mode

The first ramp generator is horizontal and the second ramp generator is vertical. The motion control algorithm is similar to HV mode, but the manner in which the speed and direction of movement is based on polar instead of cartesian coordinates. Phase1 controls motion angle and Phase2 controls motion velocity.

C. Corner Mode

The first ramp generator is horizontal and the second ramp generator is vertical. The motion control algorithm is similar to O mode, but utilizes trapezoidal rather than sinusoidal waveforms. Phase1 controls motion speed and Phase2 controls motion depth.

R?. Random Mode

The first ramp generator is horizontal and the second ramp generator is vertical. The motion control algorithm is different depending on whether Phase2 is counter-clockwise or clockwise from it's midpoint. The clockwise position is random position and speed and the counter-clockwise position is random angle of movement. Phase1 controls motion speed and Phase2 controls motion depth.

Speed Mode

There are three motion speed modes. From toggle switch positions, left to right: Motion Disabled, Slow Range, Fast Range.

Waveform Mode

There are three waveform modes. From toggle switch positions, left to right: Wrap, Blank, and Mirror. In Wrap mode, the ramp phase scrolls continuously, repeating across the screen. In Blank mode, the ramp phase may be moved entirely off screen. In Mirror mode, the ramp phase inverts on even numbered cycles, creating an oversized quadrilateral space that is 2x2 screens in size. When used in HD timing formats, there will be a 20ns black line present when the ramp reflects from positive to negative slopes. This is expected behavior.

Should I Update My Firmware?

If your serial number is below #50, you should update your firmware to version 1.0.1, available for download on this page. This will fix compatibility issues with progressive sync timings. Firmware update instructions are included in the download.