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SoundMachine5.ino
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/*
La Máquina de Klausner
Basada en un cuento de Roald Dahl
Roni Bandini
October 2020
Buenos Aires, Argentina
Twitter/Instagram @RoniBandini
*/
#include "SoftwareSerial.h"
// Mp3 player rx and tx
SoftwareSerial mySerial(10, 11);
# define Start_Byte 0x7E
# define Version_Byte 0xFF
# define Command_Length 0x06
# define End_Byte 0xEF
# define Acknowledge 0x00
# define ACTIVATED LOW
int sensorPin = 7;
int vumeterPin1 = 5;
int vumeterPin2 = 6;
int potPin = 1;
int butPin = 2;
int ledPin = 9;
int humidValue=0;
long randNumber;
int sensValue=0;
// init array
int arrayCounter=0;
int arrayUsed[25] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
void setup(){
digitalWrite(ledPin , HIGH);
// mp3 player
mySerial.begin(9600);
Serial.begin(9600);
Serial.println("Klausner started");
// nothing being played, just init
playFirst();
// Play welcome msg
execute_CMD(0x0F,0x01,0x1F);
// humidity sensor
pinMode(sensorPin, INPUT);
// button
pinMode(butPin, INPUT_PULLUP);
// led
pinMode(sensorPin, OUTPUT);
// test vumeters
int myV=0;
while (myV<20)
{
analogWrite(vumeterPin1, myV);
analogWrite(vumeterPin2, myV);
delay(50);
myV=myV+1;
}
analogWrite(vumeterPin1, 0);
analogWrite(vumeterPin2, 0);
delay (1000);
sensValue = map(analogRead(potPin), 0, 1023, 0, 20);
Serial.print("Sensibility: ");
Serial.print(sensValue);
Serial.println("%");
// Write sensibility into vumeter 1
analogWrite(vumeterPin1, sensValue);
}
void loop(){
int butValue = digitalRead(butPin);
if (butValue==0){
// button pressed
digitalWrite(ledPin , LOW);
humidValue = map(analogRead(sensorPin), 0, 1023, 100, 0);
Serial.print("Humidity: ");
Serial.print(humidValue);
Serial.println("%");
int humidValueVumeter = map(analogRead(sensorPin), 0, 1023, 20, 0);
// Write humid into vumeter 2
analogWrite(vumeterPin2, humidValueVumeter);
int sensFactor = map(analogRead(potPin), 0, 1023, 0, 100);
Serial.print("Sens factor: ");
Serial.print(sensFactor);
if (humidValue*sensFactor/100<40){
Serial.println("Scream:");
int mySound=selectSound(1, 15);
switch (mySound) {
case 1:
execute_CMD(0x0F,0x01,0x01);
break;
case 2:
execute_CMD(0x0F,0x01,0x02);
break;
case 3:
execute_CMD(0x0F,0x01,0x03);
break;
case 4:
execute_CMD(0x0F,0x01,0x04);
break;
case 5:
execute_CMD(0x0F,0x01,0x05);
break;
case 6:
execute_CMD(0x0F,0x01,0x06);
break;
case 7:
execute_CMD(0x0F,0x01,0x07);
break;
case 8:
execute_CMD(0x0F,0x01,0x08);
break;
case 9:
execute_CMD(0x0F,0x01,0x09);
break;
case 10:
execute_CMD(0x0F,0x01,0x0A);
break;
case 11:
execute_CMD(0x0F,0x01,0x0B);
break;
case 12:
execute_CMD(0x0F,0x01,0x0C);
break;
case 13:
execute_CMD(0x0F,0x01,0x0D);
break;
case 14:
execute_CMD(0x0F,0x01,0x0E);
break;
case 15:
execute_CMD(0x0F,0x01,0x0F);
break;
}
}
if (humidValue*sensFactor>39 and humidValue*sensFactor<60){
Serial.println("Middle:");
int mySound=selectSound(16, 18);
switch (mySound) {
case 16:
execute_CMD(0x0F,0x01,0x10);
break;
case 17:
execute_CMD(0x0F,0x01,0x11);
break;
case 18:
execute_CMD(0x0F,0x01,0x12);
break;
}
}
if (humidValue*sensFactor>61){
Serial.println("Happy:");
int mySound=selectSound(19, 24);
Serial.println("My Sound is " + String(mySound));
switch (mySound) {
case 19:
execute_CMD(0x0F,0x01,0x13);
break;
case 20:
execute_CMD(0x0F,0x01,0x14);
break;
case 21:
execute_CMD(0x0F,0x01,0x15);
break;
case 22:
execute_CMD(0x0F,0x01,0x16);
break;
case 23:
execute_CMD(0x0F,0x01,0x17);
break;
case 24:
execute_CMD(0x0F,0x01,0x18);
break;
case 25:
execute_CMD(0x0F,0x01,0x19);
break;
case 26:
execute_CMD(0x0F,0x01,0x1A);
break;
case 27:
execute_CMD(0x0F,0x01,0x1B);
break;
}
} // humid>61
delay(2500);
digitalWrite(ledPin , HIGH);
} // but pressed
delay(250);
// reset vumeter 2
analogWrite(vumeterPin2, 0);
sensValue = map(analogRead(potPin), 0, 1023, 0, 20);
Serial.print("Sensibility: ");
Serial.print(sensValue);
Serial.println("%");
// Write sensibility into vumeter 1
analogWrite(vumeterPin1, sensValue);
}
void playFirst()
{
execute_CMD(0x3F, 0, 0);
delay(500);
setVolume(25);
delay(500);
}
void pause()
{
execute_CMD(0x0E,0,0);
delay(500);
}
void play()
{
execute_CMD(0x0D,0,1);
delay(500);
}
void playNext()
{
execute_CMD(0x01,0,1);
delay(500);
}
void playPrevious()
{
execute_CMD(0x02,0,1);
delay(500);
}
void setVolume(int volume)
{
execute_CMD(0x06, 0, volume); // Set the volume (0x00~0x30)
delay(2000);
}
void execute_CMD(byte CMD, byte Par1, byte Par2)
// Excecute the command and parameters
{
// Calculate the checksum (2 bytes)
word checksum = -(Version_Byte + Command_Length + CMD + Acknowledge + Par1 + Par2);
// Build the command line
byte Command_line[10] = { Start_Byte, Version_Byte, Command_Length, CMD, Acknowledge,
Par1, Par2, highByte(checksum), lowByte(checksum), End_Byte};
//Send the command line to the module
for (byte k=0; k<10; k++)
{
mySerial.write( Command_line[k]);
}
}
int selectSound(int lowerLimit, int upperLimit)
{
Serial.println("Selecting sound from :"+String(lowerLimit)+ " to " + String(upperLimit));
// check if all were assigned
int oneEmpty=0;
for (byte i = lowerLimit; i < upperLimit; i = i + 1) {
if (arrayUsed[i]==0){
oneEmpty=1;
}
}// for
if (oneEmpty==0){
// no empty spots, clean all
Serial.println("Cleaning array");
for (byte i = lowerLimit; i < upperLimit; i = i + 1) {
arrayUsed[i]=0;
}
}// if
int foundSpot=0;
while (foundSpot==0) {
randNumber = random(lowerLimit, upperLimit);
//Serial.println("Trying "+ String(randNumber));
if (arrayUsed[randNumber]==0) {
arrayUsed[randNumber]=1;
//Serial.println("OK");
foundSpot=1;
}
}
return randNumber;
} // end loop