Using 2 HC-SR04 sensors for stair lighting -- need help

Other Hardware Sensors
1

Hi, I am using 2 HC-SR04 ultrasonic sensors for a stair lighting project and am having trouble with the code. I can get it to work perfect travelling one way, but cannot get it to work properly the other.

I have it so the sensor at the bottom turns the leds on going up and the top sensor turns them off from bottom to top. What I want is for the top sensor to turn the lights on going down and the bottom sensor turn them off running down.

I have tried putting an "else" statement in between the code reversed which does work but not every time.

#include <FastLED.h>
#define trigPin_up 2
#define echoPin_up 3
#define trigPin_down 4
#define echoPin_down 5
#define LED_PIN     7
#define NUM_LEDS    13
CRGB leds[NUM_LEDS];

void setup() {

Serial.begin(9600);

FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);

pinMode(trigPin_up, OUTPUT);
pinMode(echoPin_up, INPUT);
pinMode(trigPin_down, OUTPUT);
pinMode(echoPin_down, INPUT); 


}
void loop(){

short duration, distance;
digitalWrite(trigPin_up, LOW); 
delayMicroseconds(2);
digitalWrite(trigPin_up, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin_up, LOW);
duration = pulseIn(echoPin_up, HIGH);
distance = (duration/2) / 29.1;

if (distance <= 20) {
leds[0] = CRGB(255, 225, 255);
FastLED.show();
delay(10);  
leds[1] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[2] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[3] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[4] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[5] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[6] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[7] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[8] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[9] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[10] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[11] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[12] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
leds[13] = CRGB(255, 255, 255);
FastLED.show();
delay(10);
}
{
short duration, distance;
digitalWrite(trigPin_down, LOW); 
delayMicroseconds(2);
digitalWrite(trigPin_down, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin_down, LOW);
duration = pulseIn(echoPin_down, HIGH);
distance = (duration/2) / 29.1;

if (distance <= 20) {
leds[0] = CRGB(0, 0, 0);
FastLED.show();
delay(30);  
leds[1] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[2] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[3] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[4] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[5] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[6] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[7] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[8] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[9] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[10] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[11] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[12] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
leds[13] = CRGB(0, 0, 0);
FastLED.show();
delay(30);
}
}
}

This is where I'm up to can anyone help??

2

Please edit your code with proper indenting for the code blocks.

It's very difficult to follow the code flow as is, and it appears as though you have misplaced braces.