GMU:Bioelectronics, aesthetics and other interesting things/PhyChip synthesiser: Difference between revisions
From Medien Wiki
No edit summary |
|||
| Line 12: | Line 12: | ||
* In electronics, a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a digital output signal. The circuit is named a "trigger" because the output retains its value until the input changes sufficiently to trigger a change (wikipedia B). | * In electronics, a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a digital output signal. The circuit is named a "trigger" because the output retains its value until the input changes sufficiently to trigger a change (wikipedia B). | ||
== Physarum plates == | == Physarum plates == | ||
| Line 26: | Line 21: | ||
image:distribution-physarum-final-stage.png|Distribution of the physarum network final stage | image:distribution-physarum-final-stage.png|Distribution of the physarum network final stage | ||
</gallery> | </gallery> | ||
== References == | |||
* Collins, N. (2009) Handmade Electronic Music: The Art of Hardware Hacking. Routledge, 2 edition, pp. | |||
* wikipedia A, https://en.wikipedia.org/wiki/Voltage-controlled_oscillator | |||
* wikipedia B, https://en.wikipedia.org/wiki/Schmitt_trigger | |||
Revision as of 22:26, 6 June 2016
PhyChip Synthesiser
PhyChip Synthesiser is developed by Leslie Garcia and Paloma Lopez within the PhiChip project.
PhyChip Synthesiser
circadie module
bioscilator modul
Hex Schmitt trigger
- VC/VCO, voltage-controlled oscillator is an electronic oscillator whose oscillation frequency is controlled by a voltage input. The applied input voltage determines the instantaneous oscillation frequency. Consequently, modulating signals applied to control input may cause frequency modulation (FM) or phase modulation (PM) (wikipedia A). Within the PhyChip Synthesiser, the VCO is given to physarum polycephalum, whose resistance varies between 1300-1500 Ohm/cm. Within the analog part pf the modular there are three main components integrated, two of which are designed using the CD4584 Schmitt trigger. The oscillators are based on Nicolas Collins work (Collins 2009).
- In electronics, a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a digital output signal. The circuit is named a "trigger" because the output retains its value until the input changes sufficiently to trigger a change (wikipedia B).
Physarum plates
Utilised coated 35 mm petri dishes in a 3 row x 2 column arrangement. Every plate was treated with an aluminium mesh with a resistance of 0.5 Ω-cm. The mesh is separated by the plate walls. In front of each cell a 4 x 3 mm aluminium finger was placed to create the contact areas. Physarum resistance was around 1300-1500 Ω·cm. On top of each plate added a 3 mm agar 2% concentration for placing the physarum.
Petri dish with 6 plates
Distribution of the physarum network early stage
Distribution of the physarum network final stage
References
- Collins, N. (2009) Handmade Electronic Music: The Art of Hardware Hacking. Routledge, 2 edition, pp.
- wikipedia A, https://en.wikipedia.org/wiki/Voltage-controlled_oscillator
- wikipedia B, https://en.wikipedia.org/wiki/Schmitt_trigger