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Dilshan R Jayakody's Project Repository
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EAGLE component library
" is a part of creative arts installation and this project is capable to produce different audio tones by detecting human touch to its attached plants. Existing version of this driver is capable to monitor 8 plants and produce different sounds for each plant.
High level layout of Musical Trees project.
This project is build around PIC16F628A 8-bit microcontroller and PT2399 echo processor IC. To drive the sensor electrodes we use pair of CD4011 quad 2-input NAND gate ICs. This prototype use TDA7052 1W audio amplifier IC to drive the speaker(s).
The existing firmware of PIC16F628A is designed to produce tones in between 155Hz to 1244Hz and this range can be change by modifying the supplied firmware source code. In this design PT2399 echo processor IC is used to get more natural (/ deep) sound effect by adding some
to the output.
Project Related Downloads
Schematic and firmware related to Musical Trees project.
PIC16F628A - FLASH-Based 8-Bit CMOS microcontroller.
PT2399 - Echo processor.
TDA7052 - 1 W BTL mono audio amplifier.
CD4011 - CMOS quad 2-input NAND gate.
L7805 - Fixed 5V positive voltage regulator.
2SC945 - NPN Silicon transistor.
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