Randomized Increasing/Decreasing Light Sequence

Other Hardware LEDs and Multiplexing
2

Unless your code is really huge, it seems preferred here to just stick it in the post rather than attach. As a favour to mankind :wink: I have done that here for ya. Note it's in tags (the </> icon) to appear as code:

//randomized light sequence 



int ledBot= 13;
int ledBMid= 12;
int ledTMid= 11;
int ledTop= 10;
int t= 100;
int r;
boolean stateledBot;
boolean stateledBMid;
boolean stateledTMid;
boolean stateledTop;

void setup() {
  // put your setup code here, to run once:
pinMode (ledBot,OUTPUT);
pinMode (ledBMid, OUTPUT);
pinMode (ledTMid, OUTPUT);
pinMode (ledTop, OUTPUT);
boolean stateledBot=false;
boolean stateledBMid=false;
boolean stateledTMid=false;
boolean stateledTop=false;

}

void loop() {
  // put your main code here, to run repeatedly:
// start


//randomization for lights
if (stateledBot==false){
  lightu1();
}
if (stateledBot==true and stateledBMid==false){
  int r=random(1,10);
}
if (stateledBMid==true and stateledTMid==false){
  int r=random(11,20);
}
if (stateledTMid==true and stateledTop==false){
  int r=random(21,30);
}
if (stateledTop==true){
  int r=random(31,40);
}

//programs when bot light is on

if (r==1){
  lightd1();
}
if (r==2 or r==3){
  lightdelay();
}

if (r>3 and r<11){
  lightu2();
}

//programs when lower middle light is on

if (r>10 and r<14){
  lightd2();
}
if (r==14){
  lightdelay();
}
if (r==15){
  lightdelay();
}
if (r>15 and r<21){
  lightu3();
}

//programs when upper middle light is on

if (r>20 and r<25){
  lightd3();
}
if (r==25){
  lightdelay();
}
if (r==26){
  lightdelay();
}
if (r>26 and r<31){
  lightu4();
}

//programs when top light is on

if (r>30 and r<38){
  lightd4();
}
if (r>37){
  lightdelay();
}
}


//SUBROUTINES FOR THE LIGHTS

void lightu1() {
  digitalWrite (ledBot, HIGH);
  delay (t);
  boolean stateledBot=true;
}

void lightu2() {
  digitalWrite (ledBMid, HIGH);
  delay (t);
  boolean stateledBMid=true;

}

void lightu3() {
  digitalWrite (ledTMid, HIGH);
  delay (t);
  boolean stateledTMid=true;
}

void lightu4() {
  digitalWrite (ledTop, HIGH);
  delay (t);
  boolean stateledTop=true;
}

void lightd1() {
  digitalWrite (ledBot, LOW);
  delay (t);
  boolean stateledBot=false;
}

void lightd2() {
  digitalWrite (ledBMid, LOW);
  delay (t);
  boolean stateledBMid=false;
}

void lightd3() {
  digitalWrite (ledTMid, LOW);
  delay (t);
  boolean stateledTMid=false;
}

void lightd4() {
  digitalWrite (ledTop, LOW);
  delay (t);
  boolean stateledTop=false;
}

void lightdelay(){
  delay (t);
}