/*
CODE for the ohmToolMultiMeter example
first built for the E-Textile Summer School
FlexPCB and ATtiny Programming Workshop
by Hannah Perner-Wilson and Irene Posch
07_2017, Paillard/France
>> http://etextile-summercamp.org/2017/summerof/fri-textile-pcbs-attiny-programming/
*/

#include
SoftwareSerial mySerial(0, 4); // RX, TX

#include
#ifdef __AVR__
#include
#endif
#define pixelPIN 1
#define NUMPIXELS 1
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUMPIXELS, pixelPIN, NEO_GRB + NEO_KHZ800);

#define soundPIN 2
#define probePIN 3
#define soundMULTIPLY 40

int probeValue = 0;
int modeState = 0;
int lastModeState = 0;
int mode = 0;
int probeMIN = 0;
int probeMAX = 1023;

void setup()
{
mySerial.begin(9600);
pinMode(probePIN, INPUT_PULLUP); // does internal pullup command work on ATtiny? otherwise: “digitalWrite(probePIN, LOW);”
pinMode(soundPIN, OUTPUT);

// make light and sound to signal ON:
strip.begin();
strip.setPixelColor(0, strip.Color(255, 255, 255));
strip.show(); // This sends the updated pixel color to the hardware.

noise(soundPIN, 1 * soundMULTIPLY, 300);
noise(soundPIN, 1023 * 20000, 300);
}

void loop()
{
probeValue = analogRead(probePIN);
mySerial.print(probeValue);
mySerial.print(“\t”);

int mappedProbeValue = constrain(probeValue, probeMIN, probeMAX);
mappedProbeValue = map(probeValue, probeMIN, probeMAX, 0, 255);
mySerial.println(mappedProbeValue);

//if there is no connection turn led and sound off:
if (mappedProbeValue > 250) {
strip.setPixelColor(0, strip.Color(0, 0, 0)); //OFF
strip.show(); // This sends the updated pixel color to the hardware
}
//if there is “direct” connection turn led white and sound on:
else if (mappedProbeValue < 10) { noise(soundPIN, 10000, 1); //MAKE SOUND DEPENDANT ON PROBE VALUE!!!! strip.setPixelColor(0, strip.Color(255, 255, 0)); strip.show(); // This sends the updated pixel color to the hardware } //if there is a connection turn led to colour and frequency to value: else { noise(soundPIN, mappedProbeValue * soundMULTIPLY, 1); //MAKE SOUND DEPENDANT ON PROBE VALUE!!!! strip.setPixelColor(0, Wheel(mappedProbeValue)); //strip.setPixelColor(0, strip.Color(100, 0, 0)); strip.show(); // This sends the updated pixel color to the hardware. } } // MAKE SOUND ON THE ATTINY WITHOUT THE SOUND LIBRARY: void noise (unsigned char noisePin, int frequencyInHertz, long timeInMilliseconds) { int x; long delayAmount = (long)(1000000 / frequencyInHertz); long loopTime = (long)((timeInMilliseconds * 1000) / (delayAmount * 2)); for (x = 0; x < loopTime; x++) { digitalWrite(noisePin, HIGH); delayMicroseconds(delayAmount); digitalWrite(noisePin, LOW); delayMicroseconds(delayAmount); } } // Input a value 0 to 255 to get a color value. // The colours are a transition r - g - b - back to r. uint32_t Wheel(byte WheelPos) { WheelPos = 255 - WheelPos; if (WheelPos < 85) { return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3); } if (WheelPos < 170) { WheelPos -= 85; return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3); } WheelPos -= 170; return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0); }