5. E-Textiles and Wearables I

This week I worked on first tests of some textile sensors in form of swatches.

"What is a swatch?

A small sample of fabric intended to demonstrate the look, feel, or implementation of a larger piece."

Research

Here I found a example for making a tilt sensor:

At this site there was a calculator for resistors if you see the colours:

I also wanted to use our embriodering machine and for this I needed this add-onn for Incscape calles IncStich:

and also this IncStich tutorial was very usfull:

Code for Pressure Sensor with LED

Here you can see the code I used for programmin on Lilypad, but the same code with changed Pin names I used also for Arduino Uno:

/*
  Analog input, analog output, serial output

  Reads an analog input pin, maps the result to a range from 0 to 255 and uses
  the result to set the pulse width modulation (PWM) of an output pin.
  Also prints the results to the Serial Monitor.

  The circuit:
  - potentiometer connected to analog pin 0.
    Center pin of the potentiometer goes to the analog pin.
    side pins of the potentiometer go to +5V and ground
  - LED connected from digital pin 9 to ground

  created 29 Dec. 2008
  modified 9 Apr 2012
  by Tom Igoe

  This example code is in the public domain.

  http://www.arduino.cc/en/Tutorial/AnalogInOutSerial
*/

// These constants won't change. They're used to give names to the pins used:
const int analogInPin = A3;  // Analog input pin that the potentiometer is attached to
const int analogOutPin = LED_BUILTIN; // Analog output pin that the LED is attached to

int sensorValue = 0;        // value read from the pot
int outputValue = 0;        // value output to the PWM (analog out)

void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
}

void loop() {
  // read the analog in value:
  sensorValue = analogRead(analogInPin);
  // map it to the range of the analog out:
  outputValue = map(sensorValue, 0, 1023, 0, 255);
  // change the analog out value:
  analogWrite(analogOutPin, outputValue);

  // print the results to the Serial Monitor:
  Serial.print("sensor = ");
  Serial.print(sensorValue);
  Serial.print("\t output = ");
  Serial.println(outputValue);

  // wait 2 milliseconds before the next loop for the analog-to-digital
  // converter to settle after the last reading:
  delay(200);
}

Video