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sound_boards:symbiotic_synth [2019/07/09 19:03] admin [LTC 3108 module] |
sound_boards:symbiotic_synth [2019/11/19 14:19] admin [Symbiotic Synth] |
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A self-sufficient audio biofeedback device\\ | A self-sufficient audio biofeedback device\\ | ||
- | The Symbiotic Synth is a low voltage oscillator that is powered as well as controlled by the human body.\\ | + | The Symbiotic Synth is a low voltage oscillator that is powered as well as controlled by the human body, thus an audible bio-feedback can be made possible.\\ |
- | It was designed by [[http://wolfgang-spahn.de/doku.php|Wolfgang Spahn]]. It was first introduced at the exhibition and workshop [[http://shared-habitats.eu/i-machine-and-energy-harvesting/|I, Machine, and Energy Harvesting]] by Mindaugas Gapševičius and Wolfgang Spahn as part of the exhibition [[http://shared-habitats.eu/|Shared Habitats]] in MO Museum, Vilnius, Lithuania in May 2019.\\ | + | It was invented and designed by [[http://wolfgang-spahn.de/doku.php|Wolfgang Spahn]] for the workshop [[http://shared-habitats.eu/i-machine-and-energy-harvesting/|I, Machine, and Energy Harvesting]] by Mindaugas Gapševičius and Wolfgang Spahn as part of the exhibition [[http://shared-habitats.eu/|Shared Habitats]] in MO Museum, Vilnius, Lithuania in May 2019.\\ |
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- | The Symbiotic Synth uses as the only power source the body temperature and drives with that an electric oscillator. The difference of the body to the environment temperature can generates some millivolt - the [[https://en.wikipedia.org/wiki/Thermoelectric_effect|Seebeck effect]]. With some tricks and High Tech, the [[https://www.analog.com/media/en/technical-documentation/data-sheets/LTC3108.pdf|LTC 3108]] one can convert that small amount of energy into some decent voltage and an [[https://www.electronics-tutorials.ws/waveforms/astable.html|astable multivibrator]] can be powered with that. It will oscillate in a audible range depending on the setting of the potentiometer. And because the headphone are actually part of the oscillation circuit one can listen to the sound, too.\\ | + | The Symbiotic Synth uses as the only power source the body temperature and drives with that an electric oscillator. The difference of the body to the environment temperature can generates some tiny little bits of electric power - the so called [[https://en.wikipedia.org/wiki/Thermoelectric_effect|Seebeck Effect]]. With some tricks and high tech in form of the Small Energy Harvesting Chip: [[https://www.analog.com/media/en/technical-documentation/data-sheets/LTC3108.pdf|LTC 3108]] one can convert that small amount of energy into some decent voltage and an [[https://www.electronics-tutorials.ws/waveforms/astable.html|astable multivibrator]] circuit can be powered with that. It will oscillate in a audible range depending on the setting of the potentiometer. And because the headphone are actually part of the oscillation circuit one can listen to the sound, too.\\ |
- | In attaching some light and temperature depending resistors to the circuit one can have variations of the sound based on the human body and its functions. The generated sound will change depending on breath, heart beat, skin resistance and body temperature.\\ | + | In attaching some sensors, like: light, pressure, skin and temperature depending resistors to the circuit one can have variations of the sound based on the human body and its functions. The generated sound will change depending on breath, heart beat, skin resistance and body temperature.\\ |
{{:sound_boards:symbiotic_synth_01.jpg?600|}}\\ | {{:sound_boards:symbiotic_synth_01.jpg?600|}}\\ | ||
- | With all that both is possible to power and to modulate a synthesizer with the own human body. And because the generated sound will stimulate the body function, too, the Symbiotic Synth can be called an self-sufficient audio biofeedback device.\\ | + | With all that both is possible: to power and to modulate a synthesizer with the own human body. And because the generated sound will stimulate the body function, too, the Symbiotic Synth can be called an self-sufficient audio biofeedback device.\\ |
+ | |||
+ | The Symbiotic Synth is part of the installation [[https://wolfgang-spahn.de/doku.php/installation:thermal-acoustic-seance|Thermal-Acoustic-Seance]] and was shown at the [[https://karachibiennale.org.pk/kb19-artistsandvenues/|Alliance Francaise Karachi at the Karachi Biennale 2019]], Pakistan, with support by the [[https://www.goethe.de/ins/pk/en/index.html|Goethe Institute Pakistan]]\\ | ||
==== Schematic ==== | ==== Schematic ==== | ||
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---- | ---- | ||
==== Paper PCB ==== | ==== Paper PCB ==== | ||
+ | |||
+ | Here one can find the [[about:introduction|Paper PCB]] designs. How to transform them in a real board is described here: [[about:manual|Paper PCB Manual]]. And for the SMD soldering one can find some help here: [[about:smd-soldering|SMD Solder Manual]].\\ | ||
+ | ... and don't forget the cut!\\ | ||
+ | |||
{{:sound_boards:symbiotic_synth_02.jpg?400|}}\\ | {{:sound_boards:symbiotic_synth_02.jpg?400|}}\\ | ||
{{:sound_boards:symbiotic_synth_02.zip?400|}}\\ | {{:sound_boards:symbiotic_synth_02.zip?400|}}\\ | ||
+ | |||
+ | ---- | ||
+ | ==== Manual ==== | ||
+ | Attach a Peltier elemnet were it's marked on the board - mind the polarity!\\ | ||
+ | When first used the switch should be on LED, and after a little while the LED should light up und the Seebeck effect is generating some power.\\ | ||
+ | One can use that power now to make sound, one has to set the switch on OSC and with the headphones connected one can here some sound - the jumper has to be set.\\ | ||
+ | With the potentiometer one can change now the frequency. If one wants change the sound by using some sensors they have to be connected on the pins instead of the jumper. The best effect will be achieved if one uses sensors with a resistence around 100 KOhm.\\ | ||
+ | |||
+ | The pin on the board with the marking STO can be used for an extra energy storage. A big capacitor should be connected on STO and ground (GND).\\ | ||
+ | |||
+ | But be aware the Symbiotic Synth works with the temperature different from the body to the environment. If that difference is not big enough the Synth will not work. The best results were by temperatures around 25C and lower.\\ | ||
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==== LTC 3108 module ==== | ==== LTC 3108 module ==== | ||
In the Symbiotic Synth the [[https://www.analog.com/media/en/technical-documentation/data-sheets/LTC3108.pdf|LTC3108]] and a transformer together with some capacitors are build in.\\ | In the Symbiotic Synth the [[https://www.analog.com/media/en/technical-documentation/data-sheets/LTC3108.pdf|LTC3108]] and a transformer together with some capacitors are build in.\\ | ||
- | This part of the circuit has the same functions like this LTC3108 module:\\ | + | This part of the circuit has the same functionality like on of the LTC3108 module one find on e-bay:\\ |
[[https://www.ebay.com/itm/Body-heat-energy-harvesting-device/332328658257]]\\ | [[https://www.ebay.com/itm/Body-heat-energy-harvesting-device/332328658257]]\\ | ||
{{:sound_boards:symbiotic_synth_aufbau.jpg?600|}}\\ | {{:sound_boards:symbiotic_synth_aufbau.jpg?600|}}\\ | ||
- | Two Power Outputs:\\ | + | === Usage of the LTC3108 module === |
+ | The board has two outputs:\\ | ||
Vout1 with selectable voltage and Vout2 which follows Vout1 in terms of voltage level.\\ | Vout1 with selectable voltage and Vout2 which follows Vout1 in terms of voltage level.\\ | ||
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==== Links ==== | ==== Links ==== | ||
- | * [[https://en.wikipedia.org/wiki/Thermoelectric_effect|thermoelectric effect]] | + | * [[http://shared-habitats.eu/i-machine-and-energy-harvesting/]] |
+ | * [[https://en.wikipedia.org/wiki/Thermoelectric_effect]] | ||
* [[https://www.analog.com/media/en/technical-documentation/data-sheets/LTC3108.pdf]] | * [[https://www.analog.com/media/en/technical-documentation/data-sheets/LTC3108.pdf]] | ||
* [[https://www.electronics-tutorials.ws/waveforms/astable.html]]\\ | * [[https://www.electronics-tutorials.ws/waveforms/astable.html]]\\ | ||
+ | * [[https://www.analog.com/media/en/technical-documentation/eval-board-schematic/DC2080A-1-SCH.PDF]]\\ | ||
---- | ---- | ||
- | All contents are Copyright © 2019 by Wolfgang Spahn. All rights reserved. | + | ==== Acknowledgment ==== |
+ | |||
+ | Thanks to Mindaugas Gapševičius for the support.\\ | ||
+ | |||
+ | Supported by [[https://www.norden.org/en/funding-opportunities/nordic-culture-point-culture-and-art-programme|Nordic Culture Point]].\\ | ||
+ | In cooperation of [[http://www.o-o.lt/|Institutio Media]].\\ | ||
+ | |||
+ | ---- | ||
+ | ==== License ==== | ||
+ | |||
+ | This board is designed by **Wolfgang Spahn**.\\ | ||
+ | All contents are Copyright © 2019 by Wolfgang Spahn. All rights reserved. \\ | ||
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