This installation project was an opportunity to learn and build something with electronics. Each unit includes a 45W power supply, an Arduino micro-controller, a custom build circuit board which acts as an audio filter to detects a specific audio frequency, a microphone, speakers, a RGB-LED strip and some controls.
Each Arduino micro-controller is programmed with a set of rules to allow both to engage into a conversation, in a non deterministic way. It produces words in binary via light and a discontinuous audio tone. Between each sentence there is a short break. Within that short period of time, the other unit has a chance to intervene. If both accidentally start talking together, one stops. If one talks for way too long, the other starts talking as well and as no-one gives up, they talk on top of each other and turn red.
Mihalis Marinis designed and helped with the implementation of the custom board.
This installation was build for monomorphia solo art exhibition.
It all started from this gif
26Feb14 | Spokesman
is coming soon on your local channelmore ►
14Jul14 | Mannequins and cardboard mockups
14Jul14 | First test heads
21Jul14 | Many attempts to find the right shape
13Nov14 | debate_cone
Vector design for the lazer cut
24Jul14 | Design sheets
and plexiglass heads right off the manufacturer
27Jul14 | Head attatchement
29Jul14 | First LED tests
31Jul14 | First version of the board
Mihalis Marinis working on the design for the audio tone detection circuit
13Nov14 | debate_board_v2
custom electronics board designed by Mihalis Marinis
24Aug14 | Second version
right before adding all the components
24Aug14 | Powering it the board
12Sep14 | Adding the LEDs and arduino control
16Sep14 | Three parts of the module
Power supply, arduino, audio tone detection board
11Oct14 | Both modules
finished with their control panel. [Microphone sensitivity, speaker volume, always on switch, RGB knobs, On/Off switch]
16Oct14 | Module installed
16Oct14 | Both units complete
The algorithm was prototyped in processing for easy debugging and visual feedback. Here is what it looks like when running.
See the final installation.