Functional Description
INSPIRATION
In the early nineteenth century, Ernst Chladni developed a technique for investigating two dimensional wave patterns. Sand is sprinkled onto a vibrating plate and comes to rest on the nodal lines, where no vibration occurs. This results in beautiful patterns. This became the inspiration for our ART.
In the early nineteenth century, Ernst Chladni developed a technique for investigating two dimensional wave patterns. Sand is sprinkled onto a vibrating plate and comes to rest on the nodal lines, where no vibration occurs. This results in beautiful patterns. This became the inspiration for our ART.
WELCOME MODE
In its resting state, the ART is in "Welcome Mode" in which it cycles through a discrete set of LED patterns to attract an ARTIST closer. As the ARTIST approaches the ART, they are prompted by numbered images to brush off "old" sand to the left and right of the plate and then to sprinkle "fresh" sand onto the plate. Once this task is complete, the ARTIST is drawn to the glowing blue start button (the only lit interaction) to begin the ART-2-SEE performance.
In its resting state, the ART is in "Welcome Mode" in which it cycles through a discrete set of LED patterns to attract an ARTIST closer. As the ARTIST approaches the ART, they are prompted by numbered images to brush off "old" sand to the left and right of the plate and then to sprinkle "fresh" sand onto the plate. Once this task is complete, the ARTIST is drawn to the glowing blue start button (the only lit interaction) to begin the ART-2-SEE performance.
INTERACTION
INITIATION
After the start button is pressed, one ARTIST will have up to 45 seconds to interact with the ART. The ART begins as the pendulum starts to swing back and forth signaling the passage of time. The yin-yang pendulum is attached to a servo, which drives the motion. The amplitude of the swing decreases as time passes (i.e. large swings in the beginning and very small oscillations as time runs out). The start button also initiates an automatic, pre-programmed light show, different from that of the “Welcome Mode,” and the activation of the second button, the LED control button, which glows bright green.
LED PATTERN MANIPULATION
As the ARTIST presses the LED control button, he/she can explore a variety of LED patterns. The ARTIST influences changes in color and different configurations of LEDs to appear. This period of play lasts for 10 seconds, and once the timer expires, the distance sensor is activated, which is signaled by the green LED above the sensor turning on and the deactivation of the LED control button.
HAND PROXIMITY LED INTESITY MANIPULATION
The ARTIST can now manipulate the number of rows of LEDs active at any given time. The LEDs all turn a calming light pink color. As the ARTIST brings his/her hand closer to the distance sensor, the rows of LEDs are sequentially turned off. This period of play lasts for 10 seconds. Finally, the last interaction, the dial potentiometer, is activated, signaled by a green LED above it turning on and the distance sensor LED turning off.
FREQUENCY MANIPULATION AND PATTERN FORMATION
The ARTIST has entered the main stage of the performance: pattern making. The ARTIST can select from 5 discrete frequencies by turning the potentiometer. With the first movement of potentiometer, the speaker audibly comes to life. A pattern begins to form as the sand vibrates along the plate until it comes to rest at various nodes. The ARTIST can then see another pattern by again turning the dial. The ARTIST receives audio feedback from the speaker as he/she changes from frequency to frequency. Should the plate be getting slim on sand, the ARTIST can sprinkle more sand onto the plate with the nearby sand shaker to better visualize the patterns. This period of play lasts for 20 seconds.
INITIATION
After the start button is pressed, one ARTIST will have up to 45 seconds to interact with the ART. The ART begins as the pendulum starts to swing back and forth signaling the passage of time. The yin-yang pendulum is attached to a servo, which drives the motion. The amplitude of the swing decreases as time passes (i.e. large swings in the beginning and very small oscillations as time runs out). The start button also initiates an automatic, pre-programmed light show, different from that of the “Welcome Mode,” and the activation of the second button, the LED control button, which glows bright green.
LED PATTERN MANIPULATION
As the ARTIST presses the LED control button, he/she can explore a variety of LED patterns. The ARTIST influences changes in color and different configurations of LEDs to appear. This period of play lasts for 10 seconds, and once the timer expires, the distance sensor is activated, which is signaled by the green LED above the sensor turning on and the deactivation of the LED control button.
HAND PROXIMITY LED INTESITY MANIPULATION
The ARTIST can now manipulate the number of rows of LEDs active at any given time. The LEDs all turn a calming light pink color. As the ARTIST brings his/her hand closer to the distance sensor, the rows of LEDs are sequentially turned off. This period of play lasts for 10 seconds. Finally, the last interaction, the dial potentiometer, is activated, signaled by a green LED above it turning on and the distance sensor LED turning off.
FREQUENCY MANIPULATION AND PATTERN FORMATION
The ARTIST has entered the main stage of the performance: pattern making. The ARTIST can select from 5 discrete frequencies by turning the potentiometer. With the first movement of potentiometer, the speaker audibly comes to life. A pattern begins to form as the sand vibrates along the plate until it comes to rest at various nodes. The ARTIST can then see another pattern by again turning the dial. The ARTIST receives audio feedback from the speaker as he/she changes from frequency to frequency. Should the plate be getting slim on sand, the ARTIST can sprinkle more sand onto the plate with the nearby sand shaker to better visualize the patterns. This period of play lasts for 20 seconds.
COMPLETION
Once the timer runs out - the pendulum nears the end of its swing - a "Completion" LED pattern is initiated, giving the ARTIST a sense of accomplishment for having successfully created and witnessed Chladni pattern formation. This final light show lasts for 5 seconds and the ART is reset back into its initial "Welcome Mode".
Once the timer runs out - the pendulum nears the end of its swing - a "Completion" LED pattern is initiated, giving the ARTIST a sense of accomplishment for having successfully created and witnessed Chladni pattern formation. This final light show lasts for 5 seconds and the ART is reset back into its initial "Welcome Mode".
RESET
Should the power button be pressed, but an ARTIST lose interest and walk away, discontinuing any further interactions, the ART will reset back into "Welcome Mode" after a period of 30 seconds of inactivity.
Should the power button be pressed, but an ARTIST lose interest and walk away, discontinuing any further interactions, the ART will reset back into "Welcome Mode" after a period of 30 seconds of inactivity.
VIDEO of ART PERFORMANCE (GAMEPLAY)
The gameplay can be seen at these linked videos:
gameplay1 (random user demo night)
gameplay2 (clear steps shown)
gameplay3(ARTIST perspective)
gameplay1 (random user demo night)
gameplay2 (clear steps shown)
gameplay3(ARTIST perspective)
Project Description
Concerned that many Silicon Valley people can’t relate to art, Stanford has decided to promote a Technology in the Arts program. Students in ME 218 have been commissioned to create Automatic Reactive Technology (ART) for the viewing pleasure of the public. The ART must be able to be operated by common folks of all ages who may know little of the technology involved. The design should be suitable and appropriate for viewing and use by a multitude of interested ARTISTs (Art Reviewers Touring Institutions of Suitable Technology) of all ages and must meet the specifications listed below:
ART OPERATION SPECIFICATIONS:
BASIC SPECIFICATIONS:
ART OPERATION SPECIFICATIONS:
- Must consist of an electro-mechanical widget, which may involve items such as sensors, driving actuators, event driven software, implementation of Software in C on Tiva LaunchPad
- Limited to an expenditure of $160.00 per team for all materials and parts used in the construction of your project
- The ART will power up into a welcoming mode, encouraging interaction with ARTIST. Whenever device is in this mode, it should create a display to maximize sporadic activity.
- The ART must produce ART2Keep (a take-away piece) or ART2See (a performance).
- The average ARTIST should take approximately 45 seconds to interact with your ART. No one except Edgar Degas (ED) should be able to evaluate the ART in less than 30 seconds
- Each ART should include a creative display of the passage of time since the ARTISTs have begun their work (their initial interaction).
- The ART must require creative input. The ART should reset after the ARTIST stops interacting with the ART within 2 minutes of producing ART2Keep or ART2See
- The ART should require large scale motion on the part of the ARTIST for at least one of its interactions.
- Once finished with it’s ART2Keep or ART2See, the ART should provide a clear audio and/or visual indication that will inspire a sense of accomplishment in ARTISTs everywhere. This indication may not last longer than 30 seconds before the ART resets.
- The ART should be usable without the guidance of a Master ARTIST. Any static instructions must be in pictorial form
BASIC SPECIFICATIONS:
- Team of 4 will construct ART
- The ART must have parts that visibly move under the control of Tiva LaunchPad
- The components to construct the ART must be substantially modified before being incorporated into the project
- Each ART must respond to at least 3 distinct inputs/interactions
- At least one of the user inputs/interactions must be interpreted as an analog input to the TIVA from the user. This input must be used to produce some behavior by the ART that makes sense for the analog input. No simple thresholds.
- One of the user interactions must involve non-contact sensing
- Each ART must provide the user with feedback about his/her actions in the following forms: haptic, audio, tactile feedback. Multiple modes of feedback are encouraged.
- The ART must be a contained entity, meeting all the requirements, with the power supply being the only external component.
- ART must fit in a footprint of 18 in wide X 18 in deep X 36 in high. During operation, the user interaction may occupy a volume of no more than 24 in wide X 18 in deep X 80 in high.