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Project 2-- wearable Physical Computing (Fall 2004)

Project 2-- wearable Physical Computing (Fall 2004). Alyssa Lees Tatiana Pevzner. Proposal. Design and biuld temperature triggered device (a pies of clothing) where temperature changes (ups and downs) light up an el wire.

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Project 2-- wearable Physical Computing (Fall 2004)

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  1. Project 2-- wearablePhysical Computing (Fall 2004) Alyssa Lees Tatiana Pevzner

  2. Proposal • Design and biuld temperature triggered device (a pies of clothing) where temperature changes (ups and downs) light up an el wire. • Color scheme of garment is changing as temperature outside is changing the suggested response involves two parts : • 1. a response to the environment itself (visual output of changing color of embedded el wires) and • 2. a response for the actual user - (ideas include generated heat when the outside temperature becomes sufficiently cold). • Flickering in light corresponds with individual mood change

  3. Experiment with the el wire Expand upon interaction between people temperature (outside/inside). People tend to wear more clothing as temperature goes up and less as it goes down. Make this interaction more engaging Goal

  4. Context • Context-initially we focused our observation on the external temperature changes. this changes became the "trigger points" for interaction • We constructed a skirt w/elwire going though it and a small plastic box housing all the electronics • With the censor and the fine tuned code we set a series of actions to light up an el wire in a serial pattern

  5. Prototype

  6. Prototype

  7. Results and Problems Good Findings -It works! -learned a lot about el wirethe Bad Findings -difficult to cofigure the el wire -el wire does not light up as smooth as we wanted and not very saddle instead it's flickers

  8. User

  9. User • Any one who likes a fashion and technology • Galery

  10. Code • DEFINE OSC 4 • DEFINE ADC_BITS 10 • DEFINE ADC_CLOCK 3 • DEFINE ADC_SAMPLEUS 15 • TRISA = %11111111 ' SET PORTA to all input • ADCON1 = %10000010 • TRISB = %00000000 • TRISC = %10000000 'SET FOR SERIAL IN ON PORTC.7 AND OUT ON C.6 • 'Constants • inv9600 con 16468 ' baudmode = 9600-8-n-1 inverted • warm_con CON 520 • hot_con CON 540 • min_brightness CON 100 • 'Variables • txPin VAR portc.6 • ylLED var portd.1 • on_off_sw VAR portd.6; • on_off_State VAR BYTE; • old_State VAR BYTE; • temperature_var VAR WORD; • time_counter VAR WORD; • counter VAR WORD; • brightness VAR BYTE; • gr_elwire VAR portb.4; • yl_elwire VAR portb.3; • rd_elwire VAR portb.2; • 'gr_LED VAR portb.4; • 'yl_LED VAR portb.3; • 'rd_LED VAR portb.2; • elwire_var VAR BYTE;

  11. Code • i VAR byte; • INPUT on_off_sw • OUTPUT txPin • OUTPUT ylLED • ' Initialize by blinking • HIGH ylLEd • PAUSE 300 • LOW ylLED • PAUSE 300 • HIGH ylLEd • PAUSE 300 • LOW ylLED • PAUSE 300 • HIGH ylLEd • PAUSE 300 • LOW ylLED • PAUSE 300 • HIGH ylLED • counter = 0; • time_counter = 1; • on_off_state = 0; • old_state = 0; • brightness = 255; • elwire_var = 2; • main • on_off_state = on_off_sw; • '' for testing

  12. Code • ''''''''''''''''''''''''''''''''''''''''''''' • '' check state of on/off switch • ''''''''''''''''''''''''''''''''''''''''''''' • If ((on_off_state == 1) AND (old_state == 0)) THEN 'RESET EVERYTHING • brightness = 255; ' refresh brightness to max • counter = 0; • time_counter = 1; • ELSE ' UPDATE the counters • counter = counter + 1; ' update counter • if countER > 100 THEN '> 1000 THEN • counter = 0; • time_counter = time_counter + 1 • brightness = (brightness - 1) MAX min_brightness; • ENDIF • ENDIF • old_state = on_off_state • '''''''''''''''''''''''''''''''''''''''''' • ' Get Body Temperature Readings • ' - set to a scale (perhaps 1 to 7) • ' - have set color combinations • ' - store color combinations in an array • '''''''''''''''''''''''''''''''''''''''''' • ADCIN 0, temperature_Var; • 'serout2 txpin, inv9600, ["temperature = ", DEC temperature_var, 13, • 10] '' take this out later • '' right now temperatures are very low • if temperature_var > hot_con THEN • IF elwire_var <> 3 THEN • GOSUB hot • ENDIF

  13. Code • elwire_var = 3; • else • If temperature_var > warm_con THEN • If elwire_var <> 2 THEN • GOSUB warm • ENDIF • elwire_var = 2; • ELSE • IF elwire_var <> 1 THEN • GOSUB cold • ENDIF • elwire_var = 1; • ENDIF • ENDIF • ''''''''''''''''''''''''''''''''''''''''''' • ' SET BRIGHTNESS BASED ON TIME • ' Write now brightness scale is from 0 - 255 • ' i.e. a byte • '''''''''''''''''''''''''''''''''''''''''' • SELECT CASE elwire_var • CASE 1 • pwm gr_elwire, brightness, 1 • CASE 2 • PWM yl_elwire, brightness, 1 • CASE 3 • PWM rd_elwire, brightness, 1 • CASE ELSE • PWM rd_elwire, brightness, 1 • end SELECT • goto main

  14. Code • 'GOSUB • '' set general port to red • hot: • FOR i = min_brightness to Brightness • if elwire_var == 1 THEN • pwm gr_elwire, brightness - i, 1 • ELSE '(assume elwire_var = 2 and hence yellow) • PWM yl_elwire, brightness - i, 1 • ENDIF • PWM rd_elwire, i, 1 • NEXT i • return • warm: • FOR i = min_brightness to Brightness • if elwire_var == 1 THEN • pwm gr_elwire, brightness - i, 1 • ELSE '(assume elwire_var = 3 and hence red) • PWM rd_elwire, brightness - i, 1 • ENDIF • PWM yl_elwire, i, 1 • NEXT i • return • cold: • FOR i = min_brightness to Brightness • if elwire_var == 2 THEN • pwm yl_elwire, brightness - i, 1 • ELSE '(assume elwire_var = 3 and hence red) • PWM rd_elwire, brightness - i, 1 • ENDIF • PWM gr_elwire, i, 1 • NEXT i • retu

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