Door To The Stars is an expander that opens 6 einstein-rosen bridges (aka wormhole/portals/time dimensional path/ and so on...) for the tetragrid.

What is it?
This technology allow you to send external cv inputs to perturbate the complex gravitational interactions of the tetragrid star map system. It is a one way travel, nothing gets back, at least not on this plane. Each one of the portals/inputs (right side) can be opened and closed through its correspondent hyperspace switch (left side): up is open, down is closed. The inputs are normalled down, so if for example only the first input is patched, the signal is cascaded to inputs 2,3,4,5 and 6. If you don’t want this, you can still disengage the unused inputs through the switches.

Event Horizon
Once your cv has been sent through the portal, it will appear to its correspondent pad on the playing board (follow the MAP). Now, through the magnetic pins, you can connect it to its surrounding pads, affecting the internal tetragrid behaviour.

Behaviour
You can now gravitationally bend the tetragrid to external forces. The behaviour of the cv input is susceptible to the magnetic patching on the tetra grid. Which means different results can be obtained, such as stalling the outs over a certain threshold (or even the opposite, where the tetra runs only when the threshold is met) , or forcing a reset of the tetra grid cycles (similar to the sync on a VCO). Slow rising/falling CVs can lead you to FM-like behaviours, as increase/decrease in speed. The threshold that the tetra grid is looking for is around 3 volts.

But again, this will all depend on the patching! The use of the hyperspace switch adds a lot of playability, it can bring you to unexpected results very quickly. Due to its nature, only the unipolar side of a signal will interact with your tetragrid. The inputs are scaled down and rectified, so you can still send +10V/-10V signals into the expander without having to worry.

So as you can see, full control cannot be achieved, the tetragrid will remain a chaotic system, on which you can now introduce an external set of rules.