Wearables


Inspirations

→https://unstable.design/← ☺ Textile Animation: The Emerging Goddess !


→https://www.richardvijgen.nl/#hyperthread← ☺ Wify tapestry


→Irene Posh← et →Ebru Kurbak← ☺ The knitted Radio !


→Claire Williams← ☺ Sound Embroidery !

THERMOCHROMIC CIRCUIT

↓↓↓ Mofset circuit ↓↓↓

" Heating takes a LOT of power - current to be specific. Arduino pins cannot provide the power we need to warm a heating element. We can't draw more than 40mA from a pin. We have to construct a circuit that will let us use a secondary power source. Thanks to transistors, we can do this "

Constructed thanks to the Liza Stark's →slide←

TOOLS

  • Arduino UNO / fabriXIAO
  • Arduino IDE
  • Personnal Mosfet (transistor)
  • 9V battery (secondary power source)
  • 100k resistance
  • 1N4001 DIODE
  • Heating element*

Blink tests

→ Blink code 

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(3, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(3, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(10000);                      // wait for a second
  digitalWrite(3, LOW);   // turn the LED off by making the voltage LOW
  delay(2000);                      // wait for a second
}
↓ Soldering + taking to pieces a broken speaker ↓

Blink test with fabriXIAO

Heating element*

According to the lecture, we need to find the correct ohm value from the heating element.

For my thermochromic circuit I need 2.8 Ohm in my heating element. I used 40cm of Nichrome80 yarn (0.14D / 250 gr).

COATING WITH ACRYLIC

As my yarn has a small size, to feel more the heat we need to concentrate it. By coating the yarn I would be able to coiling it on itself !

Thermochromic ink

↓↓↓ Dying a coton yarn ↓↓↓

↓↓↓ Knit knit knit ↓↓↓ jacquard structure

I added a mosfet circuit on my jacquard ! I realised that a good e-textile need very good connections so my swatch can't be worn for now because I used crocodile clip !

↓↓ reaction at 27° ↓↓

Depending of the temperature around, the color comes back little by little. My hands are constantly cold so, it was fun to play with warm and cold hands !

/// IDEA //
mask that react with our warm breath

Heat felt pen

The small resistor highlighted in blue corresponds to the 'heating element'(2.8 ohm), which is the copper wire at the tip of the felt pen. The other resistance is 100k ohm.

Preparation of the felt pen * with my acrylic coated yarn : I replaced the felt tip with a bundle of previously varnished copper wires to insulate them from any contact. This allowed me to concentrate the induced heat into the "resistive" wire and then "draw" with heat on a thermochromic surface (which reacts to the heat).

☺☺☺☺ RESULT ☺☺☺☺