ZC-4 Rotary Switch Profile Selector

Introduction

The ZonePro series of audio processors from dbx only allow for more than 4 profile selections when using a ZC-4 Zone Controller. The wiring guide for this item uses switches that require the profile number is encoded in a 4 bit binary number giving up to 16 selections. I want profile selections to be easy to use for the staff that interact with the audio systems the ZonePro controls.

Required Parts

Setting Up Hardware

I need to take pictures of this.

Schematic

Software

Code Download: Rotary_Switch_to_Relay_Binary.zip 

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// Interprets rotary switch position into 4 bit binary value for use with ZC-4 Zone controller
// Requires 4 digital pins (4, 5, 6, and 7) and one analog pin (A1)
// Use a voltage divider to change the value of the analog input. resistor values will change depending on the number of positions on the switch. 
// I provide resistance values for a common 11 position switch below.

int profileNumber = 1;

// Resistor Values for Voltage Divider
// 1 kOhm divider resistor (between +5v and GND)
// Variable Resistors for 11 Profiles: 47, 150, 330, 470, 1k, 1.5k, 2.2k, 3.6k, 4.7k, 15k, open
// Connect 1k to +5v, variable resistor, and analog input
// Connect Variable resistor to 1k and GND

void setup() {
  pinMode(A1, INPUT); //Rotary Switch Input
  pinMode(4,OUTPUT); //Relay 1
  pinMode(5,OUTPUT); //Relay 2
  pinMode(6,OUTPUT); //Relay 3
  pinMode(7,OUTPUT); //Relay 4
  Serial.begin(9600);
}

void switchPosition (int AI) {
  Serial.print(AI);
  Serial.print("\n");
  int mappedValue = map(AI, 0, 1023, 0, 10); //Change last variable to number of switch positions - 1
  switch(mappedValue) {
    case 0:
      profileNumber = 1;
      digitalWrite(4,LOW); 
      digitalWrite(5,LOW); 
      digitalWrite(6,LOW); 
      digitalWrite(7,LOW); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 1:
      profileNumber = 2;
      digitalWrite(4,HIGH); 
      digitalWrite(5,LOW); 
      digitalWrite(6,LOW); 
      digitalWrite(7,LOW); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 2:
      profileNumber = 3;
      digitalWrite(4,LOW); 
      digitalWrite(5,HIGH); 
      digitalWrite(6,LOW); 
      digitalWrite(7,LOW); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 3:
      profileNumber = 4;
      digitalWrite(4,HIGH); 
      digitalWrite(5,HIGH); 
      digitalWrite(6,LOW); 
      digitalWrite(7,LOW); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 4:
      profileNumber = 5;
      digitalWrite(4,LOW); 
      digitalWrite(5,LOW); 
      digitalWrite(6,HIGH); 
      digitalWrite(7,LOW); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 5:
      profileNumber = 6;
      digitalWrite(4,HIGH); 
      digitalWrite(5,LOW); 
      digitalWrite(6,HIGH); 
      digitalWrite(7,LOW); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 6:
      profileNumber = 7;
      digitalWrite(4,LOW); 
      digitalWrite(5,HIGH); 
      digitalWrite(6,HIGH); 
      digitalWrite(7,LOW); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 7:
      profileNumber = 8;
      digitalWrite(4,HIGH); 
      digitalWrite(5,HIGH); 
      digitalWrite(6,HIGH); 
      digitalWrite(7,LOW); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 8:
      profileNumber = 9;
      digitalWrite(4,LOW); 
      digitalWrite(5,LOW); 
      digitalWrite(6,LOW); 
      digitalWrite(7,HIGH); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 9:
      profileNumber = 10;
      digitalWrite(4,HIGH); 
      digitalWrite(5,LOW); 
      digitalWrite(6,LOW); 
      digitalWrite(7,HIGH); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 10:
      profileNumber = 11;
      digitalWrite(4,LOW); 
      digitalWrite(5,HIGH); 
      digitalWrite(6,LOW); 
      digitalWrite(7,HIGH); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 11:
      profileNumber = 12;
      digitalWrite(4,HIGH); 
      digitalWrite(5,HIGH); 
      digitalWrite(6,LOW); 
      digitalWrite(7,HIGH); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 12:
      profileNumber = 13;
      digitalWrite(4,LOW); 
      digitalWrite(5,LOW); 
      digitalWrite(6,HIGH); 
      digitalWrite(7,HIGH); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 13:
      profileNumber = 14;
      digitalWrite(4,HIGH); 
      digitalWrite(5,LOW); 
      digitalWrite(6,HIGH); 
      digitalWrite(7,HIGH); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 14:
      profileNumber = 15;
      digitalWrite(4,LOW); 
      digitalWrite(5,HIGH); 
      digitalWrite(6,HIGH); 
      digitalWrite(7,HIGH); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
    case 15:
      profileNumber = 16;
      digitalWrite(4,HIGH); 
      digitalWrite(5,HIGH); 
      digitalWrite(6,HIGH); 
      digitalWrite(7,HIGH); 
      Serial.print("Profile ");
      Serial.print(profileNumber);
      Serial.print("\n");
      break;
  }
}

void loop() {
  int readSwitch = analogRead(A1);
  switchPosition(readSwitch);
  delay(100);
}

All content and code, unless otherwise specified, is copyright 2004 - 2018 Callen Magnuson.

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