Hi everyone
I am a beginner in Arduino. I try to make a code where a neopixel ring flashes when an object is near a ultrasonic distance sensor. When there is nothing close to the sensor, the ring has this animation:
#include <Adafruit_NeoPixel.h>
#define PIN 6
#define N_LEDS 16
Adafruit_NeoPixel strip = Adafruit_NeoPixel(N_LEDS, PIN, NEO_GRB + NEO_KHZ800);
void setup() {
strip.begin();
}
void loop() {
chase(strip.Color(255, 0, 0)); // Red
//chase(strip.Color(0, 255, 0)); // Green
}
static void chase(uint32_t c) {
for(uint16_t i=0; i<strip.numPixels()+4; i++) {
strip.setPixelColor(i , c); // Draw new pixel
strip.setPixelColor(i-4, 0); // Erase pixel a few steps back
strip.show();
delay(50);
}
}
When I want to combine the code with the distance sensor and an If statement, I get the error: 'chase' was not declared in this scope
#include <Ultrasonic.h>
#include <Adafruit_NeoPixel.h>
#define PIN 6
#define N_LEDS 16
Adafruit_NeoPixel strip = Adafruit_NeoPixel(N_LEDS, PIN, NEO_GRB + NEO_KHZ800);
Ultrasonic ultrasonic(7, 8);
int distance;
void setup() {
Serial.begin(9600);
strip.begin();
strip.show(); // Initialize all pixels to 'off'
}
void loop() {
distance = ultrasonic.read();
Serial.print("Distance in CM: ");
Serial.println(distance);
delay(1000);
if (distance > 5)
{
chase(strip.Color(255, 0, 0)); // Red
static void chase(uint32_t c) {
for(uint16_t i=0; i<strip.numPixels()+4; i++) {
strip.setPixelColor(i , c); // Draw new pixel
strip.setPixelColor(i-4, 0); // Erase pixel a few steps back
strip.show();
delay(50);
}
}
}
}