Pith - arduino_metrophones
arduino_metrophones/arduino_metrophones.ino [1.0 kb]
Modified: 22:53:54 56 026 (14 May 026)
16 Days Ago
// MetroPhones
// vgmlr
#include "SPI.h"
// Chip Select Pin
int csp = 10;
// Sensor Values
long dur, dis;
// Echo Pin
int echo = 4;
// Trigger Pin
int trig = 5;
// Position
int pos = 0;
// Centimeters
// Minimum Distance
int mindis = 0;
// Maximum Distance
int maxdis = 90; // 2.6FT
void setup() {
  // Pot Com
  SPI.begin();
  pinMode(csp, OUTPUT);
  // Set Chip Select LOW
  digitalWrite(csp, LOW);
  // Testing
  Serial.begin (9600);
  // Sensor Pins
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
}
void loop() {
  // Poll Sensor
  digitalWrite(trig, HIGH);
  delay(10);
  digitalWrite(trig, LOW);
  dur = pulseIn(echo, HIGH);
  // Convert to Centimeters
  dis = dur / 58.2;
  if (dis < maxdis) {
    // Convert Distance to Pot (256 Steps)
    pos = map(dis, mindis, maxdis, 0, 255);
    // Alert Chip
    SPI.transfer(0);
    // Adjust Volume
    SPI.transfer(pos);
  } else if (dis > maxdis) {
    pos = 255;
    SPI.transfer(0);
    SPI.transfer(pos);
  }
  // Testing
  Serial.print(dis);
  Serial.print("  ");
  Serial.println(pos);
  delay(100);
}
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