Railroader...
Fair point. Attached is a hand sketched schematic of my breadboard arrangement.
And the code here:
/*
* Muscial Lights Controller V2
* Just Barran 2021
* project video At
* www.youtube.com/c/justbarran
* Like Share Subscribe
*/
#include "LedControl.h"
#define msg7RESET 13
#define msg7Strobe 9
#define msg7DCout A0
#define maxDataIn 10
#define maxLoad 11
#define maxCLK 12
#define led1 2
#define led2 3
#define led3 4
#define led4 5
#define led5 6
#define led6 7
#define led7 8
#define TRIM_POT A1
#define LED_LOW LOW //Switch the output depending on Relays
#define LED_HIGH HIGH
#define CYCLE_DELAY 50 // Time lights remain on for
LedControl lc=LedControl(maxDataIn,maxCLK,maxLoad,1);
/* we always wait a bit between updates of the display */
unsigned long delaytime=100;
byte ledPins[7]= {led1,led2,led3,led4,led5,led6,led7};
byte level[8]= {B10000000,B11000000,B11100000,B11110000,B11111000,B11111100,B11111110,B11111111};
byte setlevel[8]={B10000000,B01000000,B00100000,B00010000,B00001000,B00000100,B00000010,B00000001};
unsigned int valueMSG[7];
unsigned int potValue=0;
byte potSet = 0;
void setup() {
/*
The MAX72XX is in power-saving mode on startup,
we have to do a wakeup call
*/
pinMode(msg7RESET, OUTPUT);
pinMode(msg7Strobe, OUTPUT);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(led4, OUTPUT);
pinMode(led5, OUTPUT);
pinMode(led6, OUTPUT);
pinMode(led7, OUTPUT);
digitalWrite(msg7Strobe, HIGH);
digitalWrite(msg7RESET, LOW);
digitalWrite(led1, LED_LOW);
digitalWrite(led2, LED_LOW);
digitalWrite(led3, LED_LOW);
digitalWrite(led4, LED_LOW);
digitalWrite(led5, LED_LOW);
digitalWrite(led6, LED_LOW);
digitalWrite(led7, LED_LOW);
lc.shutdown(0,false);
/* Set the brightness to a medium values */
lc.setIntensity(0,5);
/* and clear the display */
lc.clearDisplay(0);
}
void loop()
{
digitalWrite(msg7Strobe, HIGH);
digitalWrite(msg7RESET, HIGH);
delayMicroseconds(1); //Reset Pluse Width 100nS Min
potValue = analogRead(TRIM_POT);
potSet = map(potValue, 0, 1023, 0, 8);
lc.setRow(0,7,setlevel[potSet]);
digitalWrite(msg7RESET, LOW);
delayMicroseconds(100); // Reset to Stobe Delay 72uS min
for (int x = 0 ; x < 7 ; x++)
{
digitalWrite(msg7Strobe, LOW);
delayMicroseconds(40); //Output settling time 36us Min
//Read MSG Value
int spectrumRead = analogRead(msg7DCout);
valueMSG[x] = map(spectrumRead, 0, 1023, 0, 8);
lc.setRow(0,x,level[valueMSG[x]]);
digitalWrite(msg7Strobe, HIGH);
delayMicroseconds(40); //Strobe to Strobe 72uS Min
//Set Lights
if(valueMSG[x]>=potSet)
{
digitalWrite(ledPins[x], LED_HIGH);
}
else
{
digitalWrite(ledPins[x], LED_LOW);
}
}
delay(CYCLE_DELAY); //Allow them to be on or off for a bit of time
}
void test()
{
lc.setRow(0,0,level[0]);
lc.setRow(0,1,level[1]);
lc.setRow(0,2,level[2]);
lc.setRow(0,3,level[3]);
lc.setRow(0,4,level[4]);
lc.setRow(0,5,level[5]);
lc.setRow(0,6,level[6]);
lc.setRow(0,7,level[7]);
delay(1000);
lc.clearDisplay(0);
for(int i = 0; i<8;i++)
{
lc.setRow(0,0,level[i]);
delay(500);
}
}
