At first glance it may seem that it's sort of "cheating" but in practice I have found the plant does actually play a valid roll in the circuit.
I have found using an aloe vera gel on the "tens" contacts greatly increases the conductivity/sensitivity of response of the scion and is tolerated well by most plants I've tried.
So although the plant is not directly generating the voltages or gates there are definitely observable phenomena when living material is plumbed in to the circuit, which can be further interacted with.
I'd certainly recommend the scion as an experimental tool and would welcome the development other eurorack interfaces into the living world.
Chmeterling wrote: ↑Wed Feb 09, 2022 5:41 am For the ones wondering about how Scion "extract" values from plants (or any item), here's a review paper of plant conductivity.
Also, because of a lack of information from the scientific side of this module, I would be happy to have an open discussion about it.
https://nph.onlinelibrary.wiley.com/doi ... /nph.15395
In a nutshell, and from what I understood from the manual of Scion:
- Scion will constantly send a tiny electrical signal from the Plant Input. You can see this fluctuating signal when connecting the Plant Input to a oscilloscope (OTool here).
- Connecting a plant to the TENS cables or touching the tip & sleeve of a patch cable will close the circuit of the Plant Input.
- By closing the circuit, Scion will enable the sampling of random values generated by itself.
- The user define at which rate (A) and which level (B) the values will be sampled by adjusting the Sensitivity (A) and the Density (B) parameter on the module.
- The Sensitivity parameter will act as a threshold, enabled by the difference of the measured conductivity of the Plant Input and the Sensivity parameter.
So basically, you are not sampling values from a plant (subject), but you are using the conductivity of the subject to sample Scion's internal random generator. However, because conductivity can be influenced by many parameters (cf. review above in the case of plants), you still have a dynamic interaction of the subject and the module. When connecting a plant to Scion, the plant is not playing music (i.e., generating cv) but enabling the sampling of random values. The plant must therefore be seen as a trigger generator (e.g., artist deciding when to hit a note of a keyboard or not, the fluctuating conductivity being the nervous impulse moving the finger) and not as a cv generator (e.g. a VCO itself or a noise source from which you sample values).
Did I understood it properly?