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Students/Ian Petrov

Revision as of 02:08, 20 March 2010 by Korprus (talk | contribs)

Revision as of 02:08, 20 March 2010 by Korprus (talk | contribs)

I am a Visual Arts - Media major with an interest in graphic design. I was born in Europe, and moved to Canada when I was 5. I've lived in San Diego since I was 10, and graduated from University City High School before coming to UCSD as a transfer. I have been working with computers since grade school, and am highly interested in pursuing a career in the computer field. I have been in interested in electronics also since a young age and I think it will add an interesting dimension to my artistic career, and am eagerly looking forward to learning how to make art projects using them.

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Portable Heater

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Generator?

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Air Conditioner

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Cell Phone

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Car Keys

Midterm Proposal

My proposal is a hat which contains a cooling fan enabled by a switch. The switch will hang down from the inside of the hat to about shoulder length, enabling the wearer to turn on and off the fan. This is a crude implementation of a warm weather cowboy hat which provides cooling apart from shade. It will be powered by a 9v battery, and connected by a normally open switch. In order to operate the fan, you must hold down the button.


MidDiag.jpg

Final Proposal

My final project will be called "Punch a Celebrity". It will consist of a punching pad with a picture of a celebrity on it. The pad will have an impact sensor attached to a arduino/breakout board, which is attached to a speaker. This will enable a wav or mp3 file to play at the moment of impact, and simulate that you are actually hitting a celebrity.

proposal.png

Code

[quote] [color=#7E7E7E]//Ian Petrov VIS147A Final[/color] [color=#7E7E7E]//code edited from Adafruit Wave Shield Site[/color]

  1. include <FatReader.h>
  2. include <SdReader.h>
  3. include <avr/pgmspace.h>
  4. include [color=#006699]"WaveUtil.h"[/color]
  5. include [color=#006699]"WaveHC.h"[/color]


SdReader card;    [color=#7E7E7E]// This object holds the information for the card[/color] FatVolume vol;    [color=#7E7E7E]// This holds the information for the partition on the card[/color] FatReader root;   [color=#7E7E7E]// This holds the information for the filesystem on the card[/color] FatReader f;      [color=#7E7E7E]// This holds the information for the file we're play[/color]

WaveHC wave;      [color=#7E7E7E]// This is the only wave (audio) object, since we will only play one at a time[/color]

  1. define DEBOUNCE 100  [color=#7E7E7E]// button debouncer[/color]

[color=#7E7E7E]// this handy function will return the number of bytes currently free in RAM, great for debugging!   [/color] [color=#CC6600]int[/color] freeRam([color=#CC6600]void[/color]) {   extern [color=#CC6600]int[/color] __bss_end;   extern [color=#CC6600]int[/color] *__brkval;   [color=#CC6600]int[/color] free_memory;   [color=#CC6600]if[/color](([color=#CC6600]int[/color])__brkval == 0) {     free_memory = (([color=#CC6600]int[/color])&free_memory) - (([color=#CC6600]int[/color])&__bss_end);   }   [color=#CC6600]else[/color] {     free_memory = (([color=#CC6600]int[/color])&free_memory) - (([color=#CC6600]int[/color])__brkval);   }   [color=#CC6600]return[/color] free_memory; } 

[color=#CC6600]void[/color] sdErrorCheck([color=#CC6600]void[/color]) {   [color=#CC6600]if[/color] (!card.errorCode()) [color=#CC6600]return[/color];   putstring([color=#006699]"\n\rSD I/O error: "[/color]);   [color=#CC6600][b]Serial[/b][/color].[color=#CC6600]print[/color](card.errorCode(), [color=#006699]HEX[/color]);   putstring([color=#006699]", "[/color]);   [color=#CC6600][b]Serial[/b][/color].[color=#CC6600]println[/color](card.errorData(), [color=#006699]HEX[/color]);   [color=#CC6600]while[/color](1); }

[color=#CC6600]void[/color] [color=#CC6600][b]setup[/b][/color]() {   [color=#7E7E7E]// set up serial port[/color]   [color=#CC6600][b]Serial[/b][/color].[color=#CC6600]begin[/color](9600);   putstring_nl([color=#006699]"WaveHC with 6 buttons"[/color]);       putstring([color=#006699]"Free RAM: "[/color]); [color=#7E7E7E]// This can help with debugging, running out of RAM is bad[/color]   [color=#CC6600][b]Serial[/b][/color].[color=#CC6600]println[/color](freeRam()); [color=#7E7E7E]// if this is under 150 bytes it may spell trouble![/color]      [color=#7E7E7E]// Set the output pins for the DAC control. This pins are defined in the library[/color]   [color=#CC6600]pinMode[/color](2, [color=#006699]OUTPUT[/color]);   [color=#CC6600]pinMode[/color](3, [color=#006699]OUTPUT[/color]);   [color=#CC6600]pinMode[/color](4, [color=#006699]OUTPUT[/color]);   [color=#CC6600]pinMode[/color](5, [color=#006699]OUTPUT[/color]);     [color=#7E7E7E]// pin13 LED[/color]   [color=#CC6600]pinMode[/color](13, [color=#006699]OUTPUT[/color]);     [color=#7E7E7E]// enable pull-up resistors on switch pins (analog inputs)[/color]   [color=#CC6600]digitalWrite[/color](14, [color=#006699]HIGH[/color]);   [color=#CC6600]digitalWrite[/color](15, [color=#006699]HIGH[/color]);   [color=#CC6600]digitalWrite[/color](16, [color=#006699]HIGH[/color]);   [color=#CC6600]digitalWrite[/color](17, [color=#006699]HIGH[/color]);   [color=#CC6600]digitalWrite[/color](18, [color=#006699]HIGH[/color]);   [color=#CC6600]digitalWrite[/color](19, [color=#006699]HIGH[/color]);     [color=#7E7E7E]// if (!card.init(true)) { //play with 4 MHz spi if 8MHz isn't working for you[/color]   [color=#CC6600]if[/color] (!card.init()) { [color=#7E7E7E]//play with 8 MHz spi (default faster!) [/color]     putstring_nl([color=#006699]"Card init. failed!"[/color]); [color=#7E7E7E]// Something went wrong, lets print out why[/color]     sdErrorCheck();     [color=#CC6600]while[/color](1); [color=#7E7E7E]// then 'halt' - do nothing![/color]   }      [color=#7E7E7E]// enable optimize read - some cards may timeout. Disable if you're having problems[/color]   card.partialBlockRead([color=#CC6600]true[/color]);   [color=#7E7E7E]// Now we will look for a FAT partition![/color]   uint8_t part;   [color=#CC6600]for[/color] (part = 0; part < 5; part++) { [color=#7E7E7E]// we have up to 5 slots to look in[/color]     [color=#CC6600]if[/color] (vol.init(card, part))       [color=#CC6600]break[/color]; [color=#7E7E7E]// we found one, lets bail[/color]   }   [color=#CC6600]if[/color] (part == 5) { [color=#7E7E7E]// if we ended up not finding one  :([/color]     putstring_nl([color=#006699]"No valid FAT partition!"[/color]);     sdErrorCheck();      [color=#7E7E7E]// Something went wrong, lets print out why[/color]     [color=#CC6600]while[/color](1); [color=#7E7E7E]// then 'halt' - do nothing![/color]   }      [color=#7E7E7E]// Lets tell the user about what we found[/color]   putstring([color=#006699]"Using partition "[/color]);   [color=#CC6600][b]Serial[/b][/color].[color=#CC6600]print[/color](part, [color=#006699]DEC[/color]);   putstring([color=#006699]", type is FAT"[/color]);   [color=#CC6600][b]Serial[/b][/color].[color=#CC6600]println[/color](vol.fatType(),[color=#006699]DEC[/color]); [color=#7E7E7E]// FAT16 or FAT32?[/color]      [color=#7E7E7E]// Try to open the root directory[/color]   [color=#CC6600]if[/color] (!root.openRoot(vol)) {     putstring_nl([color=#006699]"Can't open root dir!"[/color]); [color=#7E7E7E]// Something went wrong,[/color]     [color=#CC6600]while[/color](1); [color=#7E7E7E]// then 'halt' - do nothing![/color]   }      [color=#7E7E7E]// Whew! We got past the tough parts.[/color]   putstring_nl([color=#006699]"Ready!"[/color]); }

[color=#CC6600]void[/color] playcomplete([color=#CC6600]char[/color] good) {   [color=#7E7E7E]// call our helper to find and play this name[/color]   playfile([color=#006699]"GOOD.WAV"[/color]);   [color=#CC6600]while[/color] (wave.isplaying) {   [color=#7E7E7E]// do nothing while its playing[/color]   }   [color=#7E7E7E]// now its done playing[/color] }


[color=#CC6600]void[/color] [color=#CC6600][b]loop[/b][/color]() {   [color=#7E7E7E]//putstring("."); // uncomment this to see if the loop isnt running [/color]        [color=#CC6600]switch[/color] (check_switches()) { [color=#7E7E7E]//this is the loop which cycles the arnold sounds based[/color]     [color=#CC6600]case[/color] 1: [color=#7E7E7E]//on which switch you connect to.[/color]       playcomplete([color=#006699]"STOP.WAV"[/color]);       [color=#CC6600]break[/color];     [color=#CC6600]case[/color] 2:       playcomplete([color=#006699]"SOB.WAV"[/color]);       [color=#CC6600]break[/color];     [color=#CC6600]case[/color] 3:       playcomplete([color=#006699]"DONT.WAV"[/color]);       [color=#CC6600]break[/color];     [color=#CC6600]case[/color] 4:       playcomplete([color=#006699]"LACK.WAV"[/color]);       [color=#CC6600]break[/color];     [color=#CC6600]case[/color] 5:       playcomplete([color=#006699]"FIST.WAV"[/color]);   } }

[color=#CC6600]byte[/color] check_switches() {   [color=#CC6600]static[/color] [color=#CC6600]byte[/color] previous[6];   [color=#CC6600]static[/color] [color=#CC6600]long[/color] time[6];   [color=#CC6600]byte[/color] reading;   [color=#CC6600]byte[/color] pressed;   [color=#CC6600]byte[/color] index;   pressed = 0;

  [color=#CC6600]for[/color] ([color=#CC6600]byte[/color] index = 0; index < 6; ++index) {     reading = [color=#CC6600]digitalRead[/color](14 + index);     [color=#CC6600]if[/color] (reading == [color=#006699]LOW[/color] && previous[index] == [color=#006699]HIGH[/color] && [color=#CC6600]millis[/color]() - time[index] > DEBOUNCE)     {       [color=#7E7E7E]// switch pressed[/color]       time[index] = [color=#CC6600]millis[/color]();       pressed = index + 1;       [color=#CC6600]break[/color];     }     previous[index] = reading;   }   [color=#7E7E7E]// return switch number (1 - 6)[/color]   [color=#CC6600]return[/color] (pressed); }


[color=#7E7E7E]// Plays a full file from beginning to end with no pause.[/color] [color=#CC6600]void[/color] playcomplete([color=#CC6600]char[/color] *name) {   [color=#7E7E7E]// call our helper to find and play this name[/color]   playfile(name);   [color=#CC6600]while[/color] (wave.isplaying) {   [color=#7E7E7E]// do nothing while its playing[/color]   }   [color=#7E7E7E]// now its done playing[/color] }

[color=#CC6600]void[/color] playfile([color=#CC6600]char[/color] *name) {   [color=#7E7E7E]// see if the wave object is currently doing something[/color]   [color=#CC6600]if[/color] (wave.isplaying) {[color=#7E7E7E]// already playing something, so stop it![/color]     wave.[color=#CC6600]stop[/color](); [color=#7E7E7E]// stop it[/color]   }   [color=#7E7E7E]// look in the root directory and open the file[/color]   [color=#CC6600]if[/color] (!f.open(root, name)) {     putstring([color=#006699]"Couldn't open file "[/color]); [color=#CC6600][b]Serial[/b][/color].[color=#CC6600]print[/color](name); [color=#CC6600]return[/color];   }   [color=#7E7E7E]// OK read the file and turn it into a wave object[/color]   [color=#CC6600]if[/color] (!wave.create(f)) {     putstring_nl([color=#006699]"Not a valid WAV"[/color]); [color=#CC6600]return[/color];   }      [color=#7E7E7E]// ok time to play! start playback[/color]   wave.play(); }

[/quote]

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Last edited on 20 March 2010, at 13:51